TOSHIBA D5FSCAH Split Type Four Way Cassette Indoor Unit 9K Owner’s Manual

D5FSCAH / D5FLCAH
Owner’s Manual
Split-Type Four-Way Cassette Indoor Unit Ductless System
Sizes 9K, 12K, 18K, 24K, 36K, 48K

D5FSCAH Split Type Four Way Cassette Indoor Unit 9K

NOTE TO EQUIPMENT OWNER:
Please read this Owner’s Information Manual carefully before installing and using this appliance and keep this manual for future reference.
For your convenience, please record the model and serial numbers of your new equipment in the spaces provided. This information, along with the installation data and dealer contact information, will be helpful should your system require maintenance or service.

UNIT INFORMATION
Model #
Serial # ____
INSTALLATION INFORMATION
Date Installed

DEALERSHIP CONTACT INFORMATION
Company Name: __
Address:_____
Phone Number:____
Technician Name:__

A NOTE ABOUT SAFETY

This is the safety-alert symbol .
Anytime you see this symbol in manuals, instructions, and on the unit, be aware of the potential for personal injury. There are three levels of precaution:

1. DANGER identifies the most serious hazards which will result in severe personal injury or death.
2. WARNING signifies hazards which could result in personal injury or death.
3. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage.

NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

WARNING
PERSONAL INJURY AND PROPERTY DAMAGE HAZARD
For continued performance, reliability, and safety, the only approved accessories and replacement parts are those specified by the equipment manufacturer. The use of non-manufacturer approved parts and accessories could invalidate the equipment limited warranty and result in fire risk, equipment malfunction, and failure.
Review the manufacturer’s instructions and replacement parts catalogs available from your equipment supplier.

NOTE: Risk of Fire. Flammable refrigerant used. To be repairedonly by trained service personnel. Do not puncture refrigerant tubing.

WARNING
PERSONAL INJURY, DEATH AND / OR PROPERTY DAMAGE HAZARD
Failure to follow this warning could result in personal injury, death or property damage.
Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or service agency must use factoryauthorized kits or accessories when modifying this product.
Read and follow all instructions and warnings, including labels shipped with or attached to the unit before operating your new air conditioner.

GENERAL

The indoor unit provides quiet, maximum comfort. In addition to cooling and/or heating, the indoor unit matched with an outdoor condensing unit filters and dehumidifies the air in the room to provide maximum comfort.
IMPORTANT: The indoor unit should be installed by authorized personnel only; using approved tubing and accessories. If technical assistance, service or repair is needed, contact the installer. The indoor unit can be set up and operated from the remote  control (provided). If the remote is misplaced, the system can be operated from the “Auto” setting on the unit.

Operating Modes:
The indoor unit has five operating modes:

• FAN Only
• AUTO
• HEATING (heat pumps only)
• COOLING
• DEHUMIDIFICATION

FAN Only
In the FAN Only mode, the system filters and circulates the room air without changing room air temperature.
AUTO
In the AUTO mode, the system automatically cools or heats the room according to the user-selected set point.

NOTE: AUTO mode is recommended for use on single zone applications only. Using AUTO changeover on multi-zone applications could set an indoor unit to STANDBY mode, indicated by two dashes (–) on the display, which turns the indoor unit off until all the indoor units are in the same mode; either COOLING or HEATING.
NOTE: HEATING is the system’s priority mode. Simultaneous HEATING and COOLING is not allowed.

HEATING
In the HEATING mode, the system heats and filters the room air.
COOLING
In the COOLING mode, the system cools, dries and filters the room air.
DEHUMIDIFICATION (DRY)
In DEHUMIDIFICATION mode, the system dries, filters and slightly cools the room air temperature. This mode prioritizes air dehumidification but it does not take the place of a dehumidifier.

Table 1 — A (min)
hinst: Height Above Floor Level to Center of Indoor Unit / feet (meters)

**MC or Mrel Refrigerant Charge Amount / pounds (kilograms)| | 6.0 (1.8)| 6.5 (2.0)| 7.0 (2.1)| 7.5 (2.3)| 8.0 (2.4)| 8.5 (2.6)| 9.0 (2.7)| 9.5 (2.9)| 10.0 (3.0.8)
---|---|---|---|---|---|---|---|---|---|---
4.0 (1.8)| 33 (3.1)| 28 (2.6)| 24 (2.2)| 21 (1.9)| 18 (1.7)| 16 (1.5)| 14 (1.3)| 13 (1.2)| 12 (1.1)
4.5 (2.0)| 41 (3.8)| 35 (3.3)| 30 (2.8)| 26 (2.5)| 23 (2.2)| 21 (1.9)| 18 (1.7)| 16 (1.5)| 15 (1.4)
5.0 (2.3)| 51 (4.7)| 43 (4.0)| 37 (3.5)| 33 (3.0)| 29 (2.7)| 25 (2.4)| 23 (2.1)| 20 (1.9)| 18 (1.7)
5.5 (2.5)| 61 (5.7)| 52 (4.9)| 45 (4.2)| 39 (3.7)| 35 (3.2)| 31 (2.8)| 27 (2.5)| 24 (2.3)| 22 (2.1)
6.0 (2.7)| 73 (6.8)| 62 (5.8)| 54 (5.0)| 47 (4.4)| 41 (3.8)| 36 (3.4)| 32 (3.0)| 29 (2.7)| 26 (2.4)
6.5 (3.0)| 86 (8.0)| 73 (6.8)| 63 (5.9)| 55 (5.0)| 48 (4.5)| 43 (4.0)| 38 (3.5)| 34 (3.2)| 31 (2.9)
7.0 (3.2)| 100 (9.3)| 85 (7.9)| 73 (6.8)| 64 (5.9)| 56 (5.2)| 50 (4.6)| 44 (4.1)| 40 (3.7)| 36 (3.3)
7.5 (3.4)| 114 (10.6)| 97 (9.0)| 84 (7.8)| 73 (6.8)| 64 (6.0)| 57 (5.3)| 51 (4.7)| 46 (4.2)| 41 (3.8)
8.0 (3.6)| 130 (12.1)| 111 (10.3)| 95 (8.9)| 83 (7.7)| 73 (6.8)| 65 (6.0)| 58 (5.4)| 52 (4.8)| 47 (4.4)
8.5 (3.9)| 147 (13.6)| 125 (11.6)| 108 (10.0)| 94 (8.7)| 83 (7.7)| 73 (6.8)| 65 (6.1)| 59 (5.4)| 53 (4.9)
9.0 (4.1)| 164 (15.3)| 140 (13.1)| 121 (11.3)| 105 (9.8)| 93 (8.6)| 82 (7.6)| 73 (6.8)| 66 (6.1)| 59 (5.5)
9.5 (4.3)| 183 (17.0)| 156 (14.5)| 135 (12.5)| 117 (10.9)| 103 (9.6)| 91 (8.5)| 81 (7.6)| 73 (6.8)| 66 (6.1)
10.0 (4.5)**| 203 (18.9)| 173 (16.1)| 149 (13.9)| 130 (12.1)| 114 (10.6)| 101 (9.4)| 90 (8.4)| 81 (7.5)| 73 (6.8)

A-min: Required Minimum Room Area / Square Feet (Square Meters)

AREA FORMULA
Amin is the required minimum room area in ft 2/m2 mc is the actual refrigerant charge in the system in ft/kg mREL is the refrigerant releasable charge in ft/kg hinst is the height of the center of the appliance relative to the floor of the room after installation.
WARNING: The minimum room area or minimum room area of conditioned space is based on releasable charge or total system refrigerant charge.

For R454B refrigerant charge amount and minimum room area:
The indoor unit should be installed at least 5.9ft/1.8m above the floor, and the minimum room area for operation or storage should be as specified in Table

1. Installation (where refrigerant pipes are allowed)
   –Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorizes their competence to handle refrigerants safely in accordance with an industry recognized assessment specification.
   –Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants.
   –That the installation of pipe-work shall be kept to a minimum.
   –That pipe-work shall be protected from physical damage.
   –Where refrigerant pipes shall be compliance with national gas regulations.
   –That mechanical connections shall be accessible for maintenance purposes.
   –Be more careful that foreign matter (oil, water, etc) does not enter the piping. Also, when storing the piping, securely seal the opening by pinching, taping, etc.
   –Appliance shall be stored in a well ventilated area where the room size corresponds to the room area as specific for operation.
   –Joints shall be tested with detection equipment with a capability of 1/8 oz (5g)/year of refrigerant or better, with the equipment in standstill and under operation or under a pressure of at least these standstill or operation conditions after installation.
   –In cases that require mechanical ventilation, ventilation openings shall be kept clear of obstruction.
   LEAK DETECTION SYSTEM installed. Unit must be powered except for service. For the unit with refrigerant sensor, when the refrigerant sensor detects refrigerant leakage, the indoor unit will display a error code and emit a buzzing sound, the  compressor of outdoor unit will immediately stop, and the indoor fan will start running. The service life of the refrigerant sensor is 15 years. When the refrigerant sensor malfunctions, the indoor unit will display the error code FHCC. The refrigerant sensor can not be repaired and can only be replaced by the manufacture. It shall only be replaced with the sensor specified by the manufacture.

2. Because a FLAMMABLE REFRIGERANT is used
   The requirements for installation space of appliance and/or ventilation requirements are determined according to:
   – the mass charge amount (M) used in the appliance,
   –-the installation location,
   –-the type of ventilation of the location or of the appliance.
   –-piping material, pipe routing, and installation shall include protection from physical damage in operation and service, and be in compliance with national and local codes and standards, such as ASHRAE 15, IAPMO Uniform Mechanical Code, ICC  International Mechanical Code, or CSA B52. All field joints shall be accessible for inspection prior to being covered or enclosed.
   –-that protection devices, piping, and fittings shall be protected as far as possible against adverse environmental effects, for example, the danger of water collecting and freezing in relief pipes or the accumulation of dirt and debris;
   –-that piping in refrigeration systems shall be so designed and installed to minimize the likelihood of hydraulic shock damaging the system;
   –-that steel pipes and components shall be protected against corrosion with a rustproof coating before applying any insulation;
   –-that precautions shall be taken to avoid excessive vibration or pulsation;
   –-the minimum floor area of the room shall be mentioned in the form of a table or a single figure without reference to a formula;
   –-after completion of field piping for split systems, the field pipework shall be pressure tested with an inert gas and then vacuum tested prior to refrigerant charging, according to the following requirements:
   a. The minimum test pressure for the low side of the system shall be the low side design pressure and the minimum test pressure for the high side of the system shall be the high side design pressure, unless the high side of the system cannot be isolated from the low side of the system in which case the entire system shall be pressure tested to the low side design pressure.
   b. The test pressure after removal of pressure source shall be maintained for at least 1 hour with no decrease of pressure indicated by the test gauge, with test gauge resolution not exceeding 5% of the test pressure.
   c. During the evacuation test, after achieving a vacuum level specified in the manual or less, the refrigeration system shall be isolated from the vacuum pump and the pressure shall not rise above 1500 microns within 10 minutes. The vacuum pressure level shall be specified in the manual, and shall be the lessor of 500 microns or the value required for compliance with national and local codes and standards, which may vary between residential, commercial, and industrial buildings.
   –field-made refrigerant joints indoors shall be tightness tested according to the following requirements: The test method shall have a sensitivity of 1/8 oz (5g)/year of refrigerant or better under a pressure of at least 125% of the maximum allowable pressure. No leak shall be detected.

3. Qualification of workers
   Any maintenance, service and repair operations must be required qualification of the working personnel. Every working procedure that effects safety means shall only be carried out by competent persons that joined the training and achieved competence should be documented by a certificate. The training of these procedures is carried out by national training organizations or manufacturers that are accredited to teach the relevant national competency standards that may be set in legislation. Examples for such working procedures are:
   • breaking into the refrigerating circuit;
   • opening of sealed components;
   • opening of ventilated enclosures.

Information Servicing

1. Checks to the area
   Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimized. For repair to the refrigerating system, the following precautions shall be complied with prior to conducting work on the system.

2. Work procedure
   Works shall be undertaken under a controlled procedure so as to minimize the risk of a flammable gas or vapor being present while the work is being performed.

3. General work area
   All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out. work in confined spaces shall be avoided.

4. Checking for presence of refrigerant
   The area shall be checked with an appropriate refrigerant detector prior to and during work to ensure the technician is aware of potentially flammable atmospheres. Ensure that the leak detection equipment is suitable for use with flammable refrigerants (no sparking, adequately sealed, or intrinsically safe).

5. Presence of fire extinguisher
   If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire extinguishing equipment shall be available to hand. Have a dry power or CO2 fire extinguisher adjacent to the charging area.

6. No ignition sources
   No person carrying out work in relation to a REFRIGERATING SYSTEM which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space. Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable hazards or ignition risks. “No Smoking” signs shall be displayed.

7. Ventilated area
   Ensure that the area is in the open or that it adequately ventilated before breaking into the system or conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.

8. Checks to the refrigeration equipment
   Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the manufacturer’s maintenance and service guidelines shall be followed. If in doubt consult the manufacturer’s technical department for assistance. The following checks shall be applied to installations using FLAMMABLE REFRIGERANTS:
   • The actual refrigerant charge is in accordance with the room size within which the refrigerant containing parts are installed;
   • The ventilation machinery and outlets are operating adequately and are not obstructed;
   • If an indirect refrigerating circuit is being used, the secondary circuits shall be checked for the presence of refrigerant;
   • Marking to the equipment continues to be visible and legible, marking and signs that are illegible shall be corrected;
   • Refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any substance which may corrode refrigerant containing components, unless the components are constructed of materials which are inherently resistant to being corroded or are suitably protected against being so corroded.

9. Checks to electrical devices
   Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures. If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the fault cannot be corrected immediately but it is necessary to continue operation, and adequate temporary solution shall be used. This shall be reported to the owner of the equipment so all parties are advised.
   Initial safety checks shall include:
   • That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking
   • That there no live electrical components and wiring are exposed while charging, recovering or purging the system
   • That there is continuity of earth bonding

10. Sealed electrical components shall be replaced.

11. Intrinsically safe components must be replaced.

12. Cabling
    Check that cabling is not subjected to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.

13. Detection of flammable refrigerants
    Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used.
    The following leak detection methods are deemed acceptable for refrigerant systems. Electronic leak detectors that have a sensitivity of 1/8 oz (5g) may be used to detect refrigerant leaks but, in the case of FLAMMABLE REFRIGERANTS, the sensitivity may not be adequate, or may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.) Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used.
    Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed, and the appropriate percentage of gas (25% maximum) is confirmed. Leak detection fluids are also suitable for use in external leak detection.
    NOTE: Examples of leak detection fluids are as follows:
    • Bubble method
    • Fluorescent method agents
    If a leak is suspected, all naked flames shall be removed/extinguished.
    If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut off valves) in a part of the system remote from the leak. See the following instructions of removal of refrigerant.

14. Removal and evacuation
    When breaking into the refrigerant circuit to make repairs – or for any other purpose conventional procedures shall be used. However, for flammable refrigerants it is important that best practice be followed, since flammability is a consideration.
    The following procedure shall be adhered to:
    a. safely remove refrigerant following local and national regulations;
    b. evacuate;
    c. purge the circuit with nitrogen;
    d. evacuate;
    e. continuously flush or purge with nitrogen when using flame to open circuit; and open the circuit.
    The refrigerant charge shall be recovered into the correct recovery cylinders. Charging must be performed by liquid charging method. For appliances containing flammable refrigerants, the system shall be purged with oxygen-free nitrogen to render the appliance safe for flammable refrigerants. This process might need to be repeated several times. Compressed air or oxygen shall not be used for purging refrigerant systems.
    For appliances containing flammable refrigerants, refrigerants purging shall be achieved by breaking the vacuum in the system with oxygen-free nitrogen and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum (optional for A2L). This process shall be repeated until no refrigerant is within the system (optional for A2L). When the final oxygen-free nitrogen charge is used, the system shall be vented down to atmospheric pressure to enable
    work to take place.
    The outlet for the vacuum pump shall not be close to any potential ignition sources, and ventilation shall be available.

15. Charging procedures
    In addition to conventional charging procedures, the following requirements shall be followed:
    • Works shall be undertaken with appropriate tools only. If uncertain, consult the manufacturer of the tools for use with flammable refrigerants.
    • Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them.
    • Charging must be performed by liquid charging method.
    • Ensure that the refrigeration system is grounded prior to charging the system with refrigerant.
    • Label the system when charging is complete.
    • Extreme care shall be taken to avoid overfilling the refrigeration system.
    • Prior to recharging the system, it shall be pressure tested with oxygen free nitrogen (OFN). The system shall be leak tested on completion of charging but before commissioning. A follow up leak test shall be carried out prior to leaving the site.

16. Decommissioning
    Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refrigerants are recovered safely. Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of recovered refrigerant. It is essential that electrical power is available before the task is commenced.
    a. Become familiar with the equipment and its operation
    b. Isolate system electrically
    c. Before attempting the procedure, ensure the following:
    • Mechanical handling equipment is available, if required, for handling refrigerant cylinders
    • All personal protective equipment is available and being used correctly
    • The recovery process is supervised at all times by a competent person
    • Recovery equipment and cylinders conform to the appropriate standards
    d. Pump down refrigerant system, if possible.
    e. If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.
    f. Make sure that cylinder is situated on the scales before recovery takes place.
    g. Start the recovery machine and operate in accordance with instructions.
    h. Do not overfill cylinders (no more than 80% volume liquid charge).
    i. Never exceed the maximum working pressure of the cylinder.
    j. When the cylinders have been filled correctly and the process complete, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off.
    k. Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked.

17. Labeling
    Equipment shall be labeled stating that it has been decommissioned and emptied of refrigerant. The label shall be dated and signed. For appliances containing FLAMMABLE REFRIGERANTS, ensure that there are labels on the equipment stating the equipment contains FLAMMABLE REFRIGERANT.

18. Recovery
    When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely.
    When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge is available. All cylinders to be used are designated for the recovered refrigerant and labeled for that refrigerant (i. e. special cylinders for the recovery of refrigerant). Cylinders shall be complete with pressure-relief valve and associated shut-off valves in good working order. Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs.
    The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of the flammable refrigerant. If in doubt, the manufacturer should be consulted. In addition, a set of calibrated weighing scales shall be available and in good working order. Hoses shall be complete with leak-free disconnect couplings and in good condition.
    The recovered refrigerant shall be processed according to local legislation in the correct recovery cylinder, and the relevant waste transfer note arranged. Do not mix refrigerants in recovery units and especially not in cylinders.
    If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does not remain within the lubricant. The compressor body shall not be heated by an open flame or other ignition sources to accelerate this process. When oil is drained from a system, it shall be carried out safely.

19. Transportation, marking, and storage for units
    a. Transport of equipment containing flammable refrigerants.
    Compliance with the transport regulations.
    b. Marking of equipment using signs.
    Compliance with local regulations.
    c. Disposal of equipment using flammable refrigerants.
    Compliance with national regulations.
    d. Storage of equipment/appliances
    The storage of equipment should be in accordance with the manufacturer’s instructions.
    e. Storage of packed (unsold) equipment
    Storage package protection should be constructed such that mechanical damage to the equipment inside the package will not cause a leak of the refrigerant charge. The maximum number of pieces of equipment permitted to be stored together will be determined by local regulations.

Table 2 — Symbols displayed on the indoor unit or outdoor unit

**| WARNING| This symbol shows that this appliance used a flammable refrigerant. If the refrigerant is leaked and exposed to an external ignition source, there is a risk of fire.
---|---|---
**| CAUTION| This symbol shows that the operation manual should be read carefully.
**| CAUTION| This symbol shows that a service personnel should be handling this equipment with reference to the installation manual.
**| CAUTION
**| CAUTION**| This symbol shows that information is available such as the operating manual or installation manual.

WIRELESS REMOTE CONTROL

Before you begin using your new unit, familiarize yourself with the remote control. See page 8 through page 12 for more information on these controls.

NOTE: Intelligence Sensor and Vertical Swing functions are not available on this unit.
When matching with multi-zone condensers, Intelligence Sensor, Humidity Control, ECO, Active Clean, Gear, and Silent Mode will not be available.
NOTE: Hold Boost and Humidity button for five seconds to lock or unlock the wireless remote controller.

Wireless Remote Control LCD Screen Indicators
Information appears when the remote controller is powered up.

REMOTE CONTROL
NOTE: All features may not be available. This remote is shared across other indoor units.

CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage.
Handle the control with care and avoid getting the control wet.

IMPORTANT: The remote control can operate the unit from a distance of up to 26 ft. (8 m) as long as there are no obstructions. When the timer function is used, the remote control should be kept in the vicinity of the fan coil (within 26 ft. / 8 m).
The remote control can perform the following basic functions:

• Turn the system ON and OFF
• Select the operating mode
• Adjust room air temperature set point and fan speed
• Adjust right-left airflow direction

Refer to the “WIRELESS REMOTE CONTROL” on page 7 for a detailed description of all the capabilities of the remote control.
Refer to the Wireless Remote Control manual (RG10L5).

Battery Installation
Two AAA 1.5v alkaline batteries (included) are required for remote control operation.
To install or replace batteries:

1. Slide the back cover off the control to open the battery compartment.
2. Insert the batteries. Follow the polarity markings inside the battery compartment.
3. Replace the battery compartment cover.

NOTES:

1. When replacing batteries, do not use old batteries or a different type battery. This may cause the remote control to malfunction.
2. If the remote is not going to be used for several weeks, remove the batteries. Otherwise, battery leakage may damage the remote control.
3. The average battery life under normal use is about 6 months.
4. Replace the batteries when there is no audible beep from the indoor unit or if the Transmission Indicator fails to light.
5. When batteries are removed, the remote control erases all programmed settings. The control must be reprogrammed after the insertion of new batteries.

Remote Control Operation – Quick Start
NOTE: When transmitting a command from the remote control to
the unit, be sure to point the control toward the right side of
the unit. The unit confirms receipt of a command by
sounding an audible beep.

1. Turn the unit on by pushing ON/OFF.
   NOTE: If there is a preference for °C rather than °F (default), press and hold the + and – temperature set point buttons together for approximately 3 seconds.

2. Select the desired mode by pushing MODE.

3. Select the temperature set point by pointing the control toward the unit and pressing the increase/decrease temperature set point buttons until the desired temperature appears on screen.

4. Press FAN to select the desired fan speed.
   NOTE: If the unit is operating in DRY or AUTO mode, the fan speed will be automatically set and cannot be adjusted.

5. Set the airflow direction. When the unit is turned on, the Up-Down airflow louvers default to the cooling or heating position. The user can adjust the horizontal Up-Down airflow louver position by pushing SWING or have continuous louver movement by pressing SWING.

BASIC REMOTE CONTROL OPERATION
Before operation, ensure the unit is plugged in and power is available
COOL Mode

1. Press MODE to select the COOL mode.
2. Set your desired temperature using TEMP∧ or TEMP ∨ .
3. Press FAN to select the fan speed in a range of AU‘100%,
4. Press ON/OFF to start the unit.

Setting Temperature
The operating temperature range for units is 60-86°F (16-30°C)/68-82 °F (20-28°C) (depends on model). You can increase or decrease the set temperature in 1°F (0.5°C) increments.

HEAT Mode

1. Press MODE to select the HEAT mode.
2. Set your desired temperature using TEMP  ∧ or TEMP ∨ .
3. Press FAN to select the fan speed in the range of AU-100%.

NOTE: As the outdoor temperature drops, the performance of your unit’s HEAT function may be affected. In such instances, we recommend using this air conditioner in conjunction with other heating appliances.

AUTO Mode
In AUTO mode, the unit automatically selects the COOL, FAN, or HEAT operation based on the set temperature.

1. Press MODE to select AUTO.
2. Set your desired temperature using TEMP ∧ or TEMP ∨.
3. Press ON/OFF to start the unit.

NOTE: FAN Speed can not be set in the AUTO mode.

DRY Mode

1. Press MODE to select the DRY mode.
2. Set your desired temperature using TEMP ∧ or TEMP ∨.
3. Press ON/OFF to start the unit.

FAN Mode

1. Press MODE to select the FAN mode.
2. Press FAN to select the fan speed in the range of AU-0%.
3. Press ON/OFF to start the unit.

REMOTE CONTROL FUNCTIONS
Press ON/OFF
When the air conditioner is not in operation, the remote control displays the last set point and mode.

• Press ON/OFF to start the unit.
  – The unit starts in the last operating mode and set point.
  – The ON/OFF indicator appears.

• Press ON/OFF to stop the unit.
  – All the indicator lights on the unit go out, and the remote control displays the set point and mode.

NOTE: If ON/OFF is pressed too soon after a stop, the compressor will not start for 3 to 4 minutes due to the inherent protection against frequent compressor cycling. The unit only emits an audible beep when the signals are received correctly.

Selecting the Operating Mode
Select OPERATING mode to select one of the available modes.

Setting the Room Temperature Set Point
Press TEMP or TEMP to raise or lower the temperature. The unit confirms the signal receipt with a beep and the value of the set temperature appears on the display and changes accordingly. The temperature can be set between 62°F (17°C) and 86°F (30°C) in
increments of 1°F or 1°C.
NOTE: In the COOLING mode, if the temperature selected is higher than the room temperature, the unit will not start. The same applies for the HEATING mode if the selected temperature is lower than the room temperature.

Selecting the Fan Speed

Press FAN to select the fan speed.
NOTE: When the unit is on, the fan runs continuously in COOLING or HEATING mode. When in the HEATING mode, there might be situations where the fan will slow down or shut off to prevent cold blow.

Selecting the Louver Position
To optimize comfort, the louvers operate in a preset range.

The louvers can be adjusted by pressing SWING on the remote control.
The louvers can be set to either a stationary or continuous movement mode by pressing SWING. The louver position is stored in the settings, however it is deactivated when the TURBO mode engages or when a power interruption occurs.

Air Direction
Press SWING repeatedly to choose one of the louver positions. Every time SWING is pushed, the louvers swing by 30 degrees.
NOTE: Always use the remote control to adjust the louver position, otherwise abnormal operation may occur. If the horizontal louver is manually adjusted out of its range, power the unit off and then back on again.

Auto Swing
For automatic louver swing, push SWING.
Timer Function
TIMER ON (to start the unit) and TIMER OFF (to stop the unit) can be used separately or together.
Timer ON only
This function allows the unit to start automatically at the set time. The TIMER ON can be set while the unit is on or off.

UNIT ON

1. Press TIMER ON to initiate the auto-on time sequence. The set time is displayed in the remote control display. Every time TIMER ON is pressed, the time increases by 30 minutes, up to 10 h. It increases by 60 minutes, afterwards, until the time setting reaches 24 h.
2. When TIMER ON is set, the light on the unit illuminates. The unit continues to run at the set time.

UNIT OFF

1. Set the timer described in the UNIT ON section. The unit starts at the set time.
2. Adjust the TIMER ON settings to 0.0 to cancel this option.

Timer OFF only
This function allows the unit to stop automatically at the set time. The timer can be set while the unit is on or while it is off.

UNIT ON

1. Press TIMER OFF to initiate the auto-off time sequence. The set time appears on the remote control display. Every time TIMER OFF is pressed, the time increases by 30 minutes, up to 10 h. It increases by 60 minutes, afterwards, until the time settings reach 24 h.
2. When TIMER OFF is set, the timer light on the unit illuminates and the unit turns off automatically at the set time.

UNIT OFF

1. Set the TIMER to off as described in the UNIT ON section. The TIMER display on the unit illuminates and the unit remains off.
2. Adjust the TIMER ON settings to 0.0 to cancel this option.

Timer ON and Timer OFF
Use both functions to program the unit to turn on and shut off at specified times.

UNIT OFF

1. Set TIMER ON as previously described.
2. Set TIMER OFF as previously described. The unit starts automatically at the set TIME ON and turns off at the set TIME OFF.

UNIT ON

1. Set TIME OFF as previously described.
2.  Set TIME ON as previously described. The unit turns off automatically at the set TIME OFF and turns on at the set TIME ON.

SLEEP Mode
The SLEEP mode is used to conserve energy and can be used when the unit is in the COOL, HEAT or AUTO mode only.

COOL Mode
Push SLEEP. After 1 hour the set point raises by 2°F (1°C). After another hour, the set point raises by another 2°F (1°C) and the fan runs in a low speed. The unit shuts off 5 hours after setting the SLEEP mode. The SLEEP mode cancels if either the MODE, TEMP, FAN, TIMER, or ON/ OFF buttons on the remote control are pressed.

HEAT Mode
Same as the COOLING mode however the set points are lowered by 2°F (1°C).

TURBO Mode
Use the TURBO mode to cool or heat the room rapidly.
Press TURBO (an audible “beep” is heard if the indoor unit supports this function). The fan runs on super high speed. The TURBO mode terminates automatically 20 minutes after pressing TURBO.
The mode can be terminated immediately by pressing TURBO again.
When the TURBO mode is terminated, the unit reverts to the original setting.

CLEAN Mode
Press CLEAN to activate or deactivate the self-cleaning function. Under this function, the air conditioner automatically cleans and dries the evaporator. The cleaning cycle takes 30 minutes, after which the unit turns off automatically. Press CLEAN on the middle of the cycle to cancel the operation and turn off the unit. This function can be activated only in the COOL or DRY mode.

LED Light
Press LED to turn the display light on and off.
Resetting the Remote Control
If the batteries in the remote control are removed, the current settings will be canceled and the control returns to the initial settings and enter the STANDBY mode. Push TURBO to activate.

Time Delay
If ON/OFF is pressed too soon after a stop, the compressor will not start for 3 to 4 minutes due to the inherent protection against frequent compressor cycling. The unit only emits an audible beep when the signals are received correctly.

Heating Features
If the unit is in the heating mode, there is a delay when the fan starts. The fan starts only after the coil is warmed up to prevent cold blow.

Auto Defrost Operation
In HEATING mode, if the outdoor coil is frosted, the indoor fan and outdoor fan turns off while the system removes the frost on the outdoor coil. The system automatically reverts to normal operation when frost is removed from the outdoor unit.

Auto Start
If the power fails while the unit is operating, the unit stores the operating condition, and the unit starts the stored operation automatically when the power is restored.

OPERATION INSTRUCTIONS

NOTES:

• Different models have different front panel and display window.
  Not all the indicators describing below are available for the air conditioner you purchased. Check the indoor display window of the unit you purchased.

• Illustrations in this manual are for explanatory purposes. The actual shape of your indoor unit may be slightly different. The actual shape shall prevail.

• This display panel on the indoor unit can be used to operate the unit in case the remote control has been misplaced or is out of batteries.

• FORCED COOL mode: In FORCED COOL mode, the Operation light flashes. The system will then turn to AUTO after it has cooled with a high wind speed for 30 minutes. The remote control will be disabled during this operation.
• OFF mode: When the display panel is turned off, the unit turns off and the remote control is re-enabled.

Other Features
NOTE: Every time the unit is powered on, a buzzing sound will beheard to indicate that the product has been powered on normally. If there is no sound, it is possible that the unit is abnormal. Power on again or check the circuit.
The actual functions are subject to the product you purchased, check the indoor display and remote control of your AC. See the <Remote Controller Manual> for more features.

Default Setting
When the unit restarts after a power failure, it will default to the factory settings (AUTO mode, AUTO fan, 76°F (24°C)). This may cause inconsistencies on the remote control and unit panel. Use your remote control to update the status.
Auto-Restart
In case of power failure, the system will immediately stop. When power returns, the Operation light on the indoor unit will flash. To restart the unit, press the ON/OFF button on the remote control. If the system has an auto restart function, the unit will restart using the same settings.
Three-Minute Protection Feature
A protection feature prevents the unit from being activated for approximately 3 minutes when it restarts immediately after operation.
Louver Angle Memory Function
Some models are designed with a louver angle memory function. When the unit restarts after a power failure, the angle of the horizontal louvers will automatically return to the previous position.
The angle of the horizontal louver should not be set too small as condensation may form and drip into the machine. To reset the louver, press the manual button, which will reset the horizontal louver settings.
Heat Exchanger Dust Removal Function
This feature helps keep the outdoor coil cleaner and may extend the duration between regular maintenance intervals depending on local conditions. When the unit is turned off, a 10 seconds delay occurs and the outdoor fan runs in reverse rotation for 70  seconds to blow off loose accumulated dust and debris.
Sleep Operation
The SLEEP function is used to decrease energy use while you sleep (and you do not need the same temperature settings to stay comfortable). This function can only be activated via remote control. And the Sleep function is not available in FAN or DRY mode.
Press the SLEEP button when you are ready to go to sleep. When in COOL mode, the unit will increase the temperature by 2°F (1°C) after 1 hour, and will increase an additional 2°F (1°C) after another hour.
When in HEAT mode, the unit will decrease the temperature by 2°F (1°C) after 1 hour, and will decrease an additional 2°F (1°C) after another hour.
The sleep feature will stop after 8 hours and the system will keep running with final situation.

Refrigerant Leakage Detection

• When the system detects a malfunction of the refrigerant, the indoor unit will automatically display the following error codes:
  “EL0C (System lacks refrigerant)” ,
  “EHC1 (Refrigerant sensor detects leakage)”,
  “EHC2 (Working condition of the refrigerant sensor is out of range and leakage is detected)”, “EHC3 (Working condition of the refrigerant sensor is out of range)”, or “ECC1 (Other indoor unit refrigerant sensor detects leakage (Multi-zone)”.

• When “EHC1” or “EHC2” error occurs, the buzzer will continue to beep for 5 to 6 minutes before stopping. You can also press any button on the remote controller to stop the buzzer.

CARE AND MAINTENANCE

CAUTION
Make sure to clean the filter every two weeks.
Always TURN OFF your AC system and disconnect its power supply before cleaning or maintenance.
Only use a soft, dry cloth to wipe the unit clean. You can use a cloth soaked in warm water to wipe it clean if the unit is especially dirty.
Do not use chemicals or chemically treated cloths to clean the unit Do not use benzene, paint thinner, polishing powder or other solvents to clean the unit. They can cause the plastic surface to crack or deform.
Do not use water hotter than 104°F (40°C) to clean the front panel.
This can cause the panel to deform or become discolored.

Cleaning Your Indoor Unit (Air Filter)
Step 1: Remove the air filter.

Step 2: Clean the air filter by vacuuming the surface or washing it in warm water with mild detergent.

Step 3: Rinse the filter with clean water and allow it to air-dry. DO NOT let the filter dry in direct sunlight. Reinstall the filter.

CAUTION
Before changing the filter or cleaning, turn off the unit and disconnect its power supply.
When removing filter, do not touch metal parts in the unit. The sharp metal edges can cut you.
Do not use water to clean the inside of the indoor unit. This can destroy insulation and cause electrical shock.
Do not expose filter to direct sunlight when drying. This can shrink the filter.
Any maintenance and cleaning of outdoor unit should be performed by an authorized dealer or a licensed service provider.
Any unit repairs should be performed by an authorized dealer or a licensed service provider.

Maintaining the Unit
Maintenance –Long Periods of Non-Use
If you plan not to use your unit for an extended period of time, do the following:

Maintenance – Pre-Season Inspection
After long periods of non-use, or before periods of frequent use, do the following:

TROUBLESHOOTING

CAUTION
If any of the following conditions occurs, turn off your unit immediately.

• The power cord is damaged or abnormally warm
• You smell a burning odor
• The unit emits loud or abnormal sounds
• A power fuse blows or the circuit breaker frequently trips
• Water or other objects fall into or out of the unit

DO NOT ATTEMPT TO FIX THESE YOURSELF. CONTACT AN AUTHORIZED SERVICE PROVIDER IMMEDIATELY.

Table 3 — Common Issues

protection feature that prevents the unit from overloading. The unit cannot be restarted within three minutes of being turned off.
Cooling and Heating Models: If the Operation light and PRE-DEF (Pre- heating/Defrost) indicators are lit up, the outdoor temperature is too cold and the unit’s anti-cold wind is activated in order to defrost the unit.
In Cooling-only Models: If the “Fan Only” indicator is lit up, the outdoor temperature is too cold and the unit’s anti-freeze protection is activated in order to defrost the unit.
The unit changes from COOL/ HEAT mode to FAN mode| The unit may change its setting to prevent frost from forming on the unit. Once the temperature increases, the unit will start operating in the previously selected mode again.
The set temperature has been reached, at which point the unit turns off the compressor. The unit will continue operating when the temperature fluctuates again.
The indoor unit emits white mist| In humid regions, a large temperature difference between the room’s air and the conditioned air can cause white mist.
Both the indoor and outdoor units emit white mist| When the unit restarts in HEAT mode after defrosting, white mist may be emitted due to moisture generated from the defrosting process.
The indoor unit makes noises| A rushing air sound may occur when the louver resets its position.
A squeaking sound is heard when the system is OFF or in COOL mode. The noise is also heard when the drain pump (optional) is in operation.
A squeaking sound may occur after running the unit in HEAT mode due to expansion and contraction of the unit’s plastic parts.
Both the indoor unit and outdoor unit make noises| Low hissing sound during operation: This is normal and is caused by refrigerant gas flowing through both indoor and outdoor units.
Low hissing sound when the system starts, has just stopped running, or is defrosting: This noise is normal and is caused by the refrigerant gas stopping or changing direction.
Squeaking sound: Normal expansion and contraction of plastic and metal parts caused by temperature changes during operation can cause squeaking noises.
The outdoor unit makes noises| The unit will make different sounds based on its current operating mode.
Dust is emitted from either the indoor or outdoor unit| The unit may accumulate dust during extended periods of non-use, which will be emitted when the unit is turned on. This can be mitigated by covering the unit during long periods of inactivity.
The unit emits a bad odor| The unit may absorb odors from the environment (such as furniture, cooking, cigarettes, etc.) which will be emitted during operations.
The unit’s filters have become moldy and should be cleaned.
The fan of the outdoor unit does not operate| During operation, the fan speed is controlled to optimize product operation.
Leak Detection| Leak Detection System installed. Unit must be powered except for service. For the unit with refrigerant sensor, when the refrigerant sensor detects refrigerant leakage, the indoor unit will display a error code and emit a buzzing sound, the compressor of outdoor unit will immediately stop, and the indoor fan will start running. The service life of the refrigerant sensor is 15 years. When the refrigerant sensor malfunctions, the indoor unit will display the error code FHCC. The refrigerant sensor can not be repaired and can only be replaced by the manufacture. It shall only be replaced with the sensor specified by the manufacture.

NOTE: If problem persists, contact a local dealer or your nearest customer service center. Provide them with a detailed description of the unit malfunction as well as your model number.

Table 4 — Other Issues
When troubles occur, check the following points before contacting a repair company.

heat exchanger
The air filter is dirty| Remove the filter and clean it according to instructions
The air inlet or outlet of either unit is blocked| Turn the unit off, remove the obstruction and turn it back on
Doors and windows are open| Make sure that all doors and windows are closed while operating the unit
Excessive heat is generated by sunlight| Close windows and curtains during periods of high heat or bright sunshine
Too many sources of heat in the room (people, computers, electronics, etc.)| Reduce amount of heat sources
Low refrigerant due to leak or long-term use| Check for leaks, re-seal if necessary and top off refrigerant
The unit is not working| Power failure| Wait for the power to be restored
The power is turned off| Turn on the power
The fuse is burned out| Replace the fuse
Remote control batteries are dead| Replace batteries
The Unit’s 3-minutes protection has been activated| Wait three minutes after restarting the unit
Timer is activated| Turn timer off
The unit starts and stops frequently| There is too much or too little refrigerant in the system| Check for leaks and recharge the system with refrigerant.
Incompressible gas or moisture has entered the system.| Evacuate and recharge the system with refrigerant
System circuit is blocked| Determine which circuit is blocked and replace the malfunctioning piece of equipment
The compressor is broken| Replace the compressor
The voltage is too high or too low| Install a manostat to regulate the voltage
Poor heating performance| The outdoor temperature is extremely low| Use auxiliary heating device
Cold air is entering through doors and windows| Make sure that all doors and windows are closed during use
Low refrigerant due to leak or long-term use| Check for leaks, re-seal if necessary and top off refrigerant
Indicator lamps continue flashing Error code appears and begins with the letters as the following in the window display of indoor unit:
• E(x), P(x), F(x)
• EH(xx), EL(xx), EC(xx)
• PH(xx), PL(xx), PC(xx)| The unit may stop operation or continue to run safely. If the indicator lamps continue to flash or error codes appear, wait for about 10 minutes. The problem may resolve itself.
If not, disconnect the power, then connect it again. Turn the unit on.
If the problem persists, disconnect the power and contact your nearest customer service center.

NOTE: If the problem persists after performing checks and diagnostics above, turn off your unit immediately and contact an authorized service center.
The design and specifications are subject to change without prior notice for product improvement. Consult with the sales agency or manufacturer for details. Any updates to the manual will be uploaded to the service website, please check for the latest version.

Table 5 — Error Codes

Display| Malfunction and Protection Indication| Display| Malfunction and Protection Indication
---|---|---|---
ECC1| Other indoor unit refrigerant sensor detects a leak (multi-zone)| PC08| ODL Current Protection
EC07| Outdoor DC fan motor speed out of control| PC10| ODL AC voltage too low protection
EC51| ODU EEPROM error| PC11| ODL DC bus voltage too high protection
EC52| Condenser coil temperature sensor (T3) error| PC12| ODL DC bus voltage too low protection
EC53| ODU temperature sensor (T4) error| PC30| System pressure overload protection
EC54| ODU exhaust temperature sensor error| PC31| System pressure too low protection
EC55| ODU IPM module temperature sensor error| PC40| Communication failure between outdoor main control chip and the driver chip
EC56| ODU T2B sensor| PC41| Compressor current sampling circuit failure
EH00| IDU EEPROM error| PC42| Compressor starting failure
EH0A| Indoor EEPROM Parameter error| PC43| Compressor lost phrase protection
EHC1| Refrigerant Sensor detects a leak| PC44| Compressor zero speed protection
EHC2| Working condition of the refrigerant sensor is out of range and a leak is detected| PC45| Voltage drop
EHC3| Working condition of the refrigerant sensor is out of range| PC46| Compressor speed out of control
EH02| Zero-crossing signal detection error| PC49| Compressor over current error
EH03| Indoor fan motor speed is out of control| PC0A| Condenser high temperature protection
EH31| Protection for low DC bus voltage of the external fan| PC0F| PFC failure
EH32| Protection for high DC bus voltage of the external fan| PC0L| Outdoor low temperature protection
EH60| IDU ENV temperature T1 sensor error| PH09| IDU anti-cold wind stop machine
EH61| IDU pipe temperature T2 sensor error| PH90| Evaporator high temperature protection
EH0b| IDU PCB and display communication error| PH91| Evaporator low temperature protection
FH0C| Indoor Unit humidity sensor malfunction| LC01| Condenser high temperature frequency limited (L1)
FHCC| Refrigerant Sensor Error| LC02| Compressor Discharge Pipe High temperature frequency limited (L2)
EL01| IDU and ODU Communication Error| LC03| Current frequency limited (L3)
EL0C| System leaks refrigerant| LC05| Voltage frequency limited (L5)
FH0P| Wireless Module Self-Test Failure| LC06| IPM module temperature frequency limited
FL09| New and old platform mismatch failure| LH00| Evaporator temperature frequency limited (L0)
PC00| ODU IPM Protection| ****

LH07

| Remote Control frequency limitation in effect
PC01| ODU Voltage Protection
PC02| Compressor top temperature (IPM module temperature protection)| — –| Mode conflict fault
nA| No fault or protection
PC03| System Pressure Protection| |
FHCC| Refrigerant Sensor Error
---|---
ELO1| IDU and ODU Communication Error
BLOC| System Ieaks refrigerant

If you receive one of the codes above, call a technician as soon as possible.
Don’t panic…The unit will go into turbo mode until the error code is cleared.
A beeping noise will come from the unit, which is normal.
For additional diagnostic information, refer to the Service Manual.

© 2024 Carrier. All rights reserved.
Edition Date: 03/24
Catalog No: D5FSC(LC)AH-01OM
A Carrier Company
Replaces: New
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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