ACiQ 15PTC5 PTAC Heat Pump Air Conditioner Unit Instruction Manual

ACiQ 15PTC5 PTAC Heat Pump Air Conditioner Unit

Product Specifications

• Series: PTAC
• BTU/H : 7K-15K
• Models Covered: ACiQ-07PTC, ACiQ-09PTC, ACiQ-12PTC, ACiQ-15PTC, ACiQ-15PTC5
• Version Date: 09-25-23

Product Usage Instructions

1. Precaution

1.1 Safety Precaution

To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage.
Before servicing the unit, be sure to read this service manual first.

1.2 Warning

Make sure to follow all safety precautions to avoid injury or damage during installation and operation.

2. Functions and Control Panel

The unit can be set to cooling or heating mode. The temperature can be set by increments of 1. The setting temperature appears in the display.

Note: Press and hold + and – buttons together for 3 seconds to alternate the temperature display between Celsius and Fahrenheit.

3. Dimension

Dimensions for different configurations:

• Dimension 1 (no sleeve, rear grille, and rear net): 1067x406x532 mm / 42.0×15.9×20.9 inches
• Dimension 2 (no rear grille and rear net, but include sleeve): 1067x408x578 mm / 42.0×16.0x22.8 inches
• Dimension 3 (include sleeve and rear net): 1067x408x588 mm / 42.0×16.0x23.1 inches
• Dimension 4 (include sleeve, rear net, and rear grille): 1067x408x606 mm / 42.0×16.0x23.9 inches

4. Wiring Diagram

Refer to the wiring diagram section of the manual for detailed instructions on wiring connections.

5. Refrigerant Cycle Diagram

Learn about the components and functions of the refrigerant system for a better understanding of the unit’s operation.

6. Electronic Function

6.1 Terms and Definitions

Understand the various temperature terms and definitions such as TA, TE, TC, TO, TS, DAHT, and DAHT.

6.2 Electric Control Working Environment

The input voltage for the unit is 230/208V at 60Hz.

6.3 Protection Function

• The compressor has protection functions with a three-minute delay.
• Sensor protection is provided against open or short circuits.
• Evaporator anti-freezing protection is active in cooling mode.

6.4 Fan Only Mode

In this mode, the temperature cannot be controlled, and the room ambient temperature is displayed on LED.

Frequently Asked Questions

• Q: Can I use the unit without a wired remote control?
  • A: Yes, you can operate the unit using the control panel without a wired remote control.
• Q: How do I change the fan speed?
  • A: You can choose between High, Medium, or Low fan speeds using the control panel.

SERVICE MANUAL
PTAC SERIES: 7K-15K BTU/H
Models Covered: ACiQ-07PTC ACiQ-09PTC ACiQ-12PTC ACiQ-15PTC ACiQ-15PTC5
VERSION DATE: 09-25-23

Precaution

1.1 Safety Precaution.
To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. Before service unit, be sure to read this service manual at first.
1.2 Warning
INSTALLATION
Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit. There is risk of fire or electric shock. For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized service center. Do not disassemble or repair the product, there is risk of fire or electric shock. Always ground the product. There is risk of fire or electric shock. Install the panel and the cover of control box securely. There is risk of fire of electric shock. Always install a dedicated circuit and breaker. Improper wiring or installation may cause fore or electric shock. Use the correctly rated breaker of fuse. There is risk of fire or electric shock. Do not modify or extend the power cab There is risk of fire or electric shock. Do not install, remove, or reinstall the unit by yourself(customer). There is risk of fire, electric shock, explosion, or injury. Be caution when unpacking and installing the product. Sharp edges could cause injury, be especially careful of the case edges and the fins on the condenser and evaporator. For installation, always contact the dealer or an Authorized service center. There is risk of fire, electric shock, explosion, or injury.
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Do not install the product on a defective installation stand. It may cause injury, accident, or damage to the product. Be sure the installation area does not deteriorate with age. If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury. Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open. Moisture may condense and wet or damage furniture. Take care to ensure that power cable could not be pulled out or damaged during operation. There is risk of fire or electric shock. Do not place anything on the power cable. There is risk of fire or electric shock. Do not plug or unplug the power supply plug during operation. There is risk of fire or electric shock. Do not touch (operation) the product with wet hands. There is risk of fire or electric shock. Do not place a heater or other appliance near the power cable. There is risk of fire and electric shock. Do not allow water to run into electric parts. It may cause fire, failure of the product, or electric shock. Do not store or use flammable gas or combustible near the product. There is risk of fire or failure of product. Do not use the product in a tightly closed space for a long time. Oxygen deficiency could occur. When flammable gas leaks, turn off the gas and open a window for ventilation before turn the product on. Do not use the telephone or turn switches on or off. There is risk of explosion or fire. If strange sounds, or small or smoke comes from product. Turn the breaker off or disconnect the power supply cable. There is risk of electric shock or fire. Stop operation and close the window in storm or hurricane. If possible, remove the product from the window before the hurricane arrives. There is risk of property damage, failure of product, or electric shock.
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Do not open the inlet grill of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.) There is risk of physical injury, electric shock, or product failure. When the product is soaked (flooded or submerged), contact an Authorized service center. There is risk of fire or electric shock. Be caution that water could not enter the product. There is risk of fire, electric shock, or product damage. Ventilate the product from time to time when operating it together with a stove, etc. There is risk of fire or electric shock. Turn the main power off when cleaning or maintaining the product. There is risk of electric shock. When the product is not be used for a long time, disconnect the power supply plug or turn off the breaker. There is risk of product damage or failure, or unintended operation. Take care to ensure that nobody could step on or fall onto the outdoor unit. This could result in personal injury and product damage.
CAUTION
Always check for gas (refrigerant) leakage after installation or repair of product. Low refrigerant levels may cause failure of product. Install the drain hose to ensure that water is drained away properly. A bad connection may cause water leakage. Keep level even when installing the product. To avoid vibration of water leakage. Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. It may cause a problem for your neighbors. Use two or more people to lift and transport the product. Avoid personal injury. Do not install the product where it will be exposed to sea wind (salt spray) directly. It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.
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OPERATIONAL
Do not expose the skin directly to cool air for long periods of time. (Do not sit in the draft). This could harm to your health. Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigerant system There is risk of damage or loss of property. Do not block the inlet or outlet of air flow. It may cause product failure. Use a soft cloth to clean. Do not use harsh detergents, solvents, etc. There is risk of fire, electric shock, or damage to the plastic parts of the product. Do not touch the metal parts of the product when removing the air filter. They are very sharp. There is risk of personal injury. Always insert the filter securely. Clean the filter every two weeks or more often if necessary. A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage. Do not insert hands or other object through air inlet or outlet while the product is operated. There are sharp and moving parts that could cause personal injury. Do not drink the water drained from the product. It is not sanitary could cause serious health issues. Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury. Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries. There is risk of fire or explosion. Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire. They may burn of explode. If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water. Do not use the remote of the batteries have leaked. The chemical in batteries could cause burns or other health hazards.
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Functions and control panel.

The controls featured in this manual are representative of many available models. Your model may offer slightly different features. ·POWER – Press the POWER button to turn the unit on or off. ·MODE – Push this button to cycle through the modes from COOL-HEAT-FAN-COOL. The indicator light beside the “MODE” option will illuminate, identifying the mode selected. – COOL: The range of set temperature is 17/62~30/86.Cooling begins automatically when the room temperature is above the set point, and stops when the room temperature is 2 (4) below the set point. But the compressor will run 5 minutes at least in COOL mode before stopping. – HEAT: The range of set temperature is 17/62~29/84.For heat pump models, the unit can alternate to run between in reverse cycle heat mode and electric heater mode according to the difference between the setting temperature and the room temperature. The fan motor cycles with the compressor stop.
NOTE: The reverse cycle and electric heater cannot be run at the same time. In following cases, it is normal that the reverse cycle does not operate. 1.When the outdoor temperature is lower than 4/40 or the room temperature falls to 4.5/8 below the set point temperature. 2.There is a 3-minute minimum compressor run time at any setting to prevent short cycling. The indoor fan motors starts before the compressor and stops after the compressor cycles off. 3.Push the S1 on the DIP SWITCHES to UP (ON) position 4.When frost builds up to the evaporator coils, the unit will defrost automatically and the compressor will cycle off. – FAN: Fan operation only without heating and cooling.
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·UP/DOWN BUTTONS ( + / – ) – Push the UP (or DOWN) button to increase (or decrease) the set temperature of the unit in cooling
or heating mode. The temperature can be set by increments of 1 (1).The setting temperature

appears in the display. NOTE: Press and hold + and – buttons together for 3 seconds will alternate the temperature display between

& scale.

·FAN (FAN SPEED) – Every time you push this button, the fan speed cycles through the settings as follows: HIGH-MED- LOW-HIGH. ·CONSTANT FAN -In cooling mode, press the button to turn on or off the constant fan function. When the function is turned on, the constant fan light will illuminate, identifying the fan continuous run for cooling. When the function is turned off, the constant fan light will go out, identifying the fan cycle run with compressor stop.

·DISPLAYS: – Shows the set temperature in or . While on Fan only mode, it shows the room temperature.

Control code:

LC-Pads on the control panel is not available. The unit can be set by using wire controller only.

Note: When receiving the wired remote control signal display LC. Or when wired remote control signal is not

received within the panel key operation for 5 seconds to display LC

FC-Pads on the control panel and wire controller are not available. The unit can be set by using FRONT DESK

CONTROL only.

Turn the switch to off You can connect the front desk switch for two ways.

F

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Error codes: AS- Open or short circuit of room temperature sensor (T1); ES- Open or short circuit of evaporator temperature sensor( T2 ); CS-Open or short circuit of condenser temperature sensor (T3); oS-Open or short circuit of outside temperature sensor(T4); HS- Open or short circuit of exhaust temperature sensor( T5 or T6); E4- Communication malfunction between main control board and display board; LE- Drive-by-wire controller failure. NOTE: When error occurs, unplug the unit and plug it back in. If error repeats, call for service. Other codes: LO-Room temperature is lower than 0/32; HI-Room temperature is higher than 37/99 FP-Low temperature protection
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3. Dimension

Top View D

W
Front View
Dimension : Dimension 1 no sleeve,rear grille,and rear net) Dimension 2 no rear grille and rear net, but include sleeve) Dimension 3 include sleeve and rear net) Dimension 4 include sleeve, rear net and rear grille)

H
WxHxDmm) WxHxDinch) 1067x406x532 42.0×15.9×20.9 1067x408x578 42.0×16.0x22.8 1067x408x588 42.0×16.0x23.1 1067x408x606 42.0×16.0x23.9

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4. Wiring Diagram
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Refrigerant Cycle Diagram

The figure below is a brief description of the important components and their function in what is called the refrigerant system. This will help to understand the refrigeration cycle and the flow of the refrigerant in the Heat Pump Cycle.

LIQUID SIDE

CHECK VALVE (Heating Model only)
CAPILIARY TUBE

HEAT EXCHANGE (EVAPORATOR)

HEAT EXCHANGE (CONDENSER)

GAS SIDE ACCUMULATOR

REVERSING VALVE (Heating Model only)

COMPRESSOR

COOLING HEATING

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Electronic function

6.1 Terms and definitions
TA: Temperature of indoor ambient(T1) TE: Temperature of evaporator(T2) TC: Temperature of condenser(T3) TO: Temperature of outdoor ambient(T4) TS: The set temperature. DAHT: Temperature of discharge (T5) DAHT: Temperature of discharge (T6)
6.2 Electric Control working environment
Input voltage: 230/208V, 60Hz
6.3 Protection function
6.3.1 The compressor functions protection with a delay of three minutes. 6.3.2 Sensor protection at open or short circuit. 6.3.3 Evaporator anti-freezing protection at cooling mode.
6.4 Fan only mode
6.4.1 The temperature can’t be controlled at the mode, and the room ambient temperature is display on LED. 6.4.2 The Ion/ Timer functions are valid at the fan-only mode. 6.4.3 Compressor and 4-valve cease operation.
6.5 Cooling mode
6.5.1 The speed of indoor fan can be optionally chosen as High/ Medium /Low. 6.5.2 Operation of outdoor fan motor Fan motor is on when compressor is on, Fan motor is off when compressor is off. (except theT2 high Temp. protection). If there’s only one speed of the fan motor, use the high speed instead of the low speed.
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When TO30 and lasts for 1 minute, the fan motor will operates at high speed. When TO28 and lasts for 1 minute, the fan motor will operates at low speed. When 28TO30:
A) If fan motor is off originally, it will operate at high speed. B) If fan motor is on originally, it will keep on working at the original speed. 6.5.3. Compressor Running Guidelines The compressor will be activated by sensing the difference between setting temperature and the actual ambient room temperature. The compressor operates as below:
6.5.4 The Ion/ Timer/ Sleep/ Energy Saver/ Follow Me functions are valid at the cooling mode.
6.6 Heating mode
6.6.1 The speed of indoor fan can be optionally chosen as High/ Medium /Low. 6.5.2 Operation of outdoor fan motor Fan motor is on when compressor is on, Fan motor is off when compressor is off. (except theT2 high Temperature protection). If there’s only one speed of the fan motor, use the high speed instead of the low speed.
When TO15and lasts for 1 minute, the fan motor will operates at low speed. When TO11 and lasts for 1 minute, the fan motor will operates at high speed. When 15TO11
A) If fan motor is off originally, it will operate at high speed. B) If fan motor is on originally, it will keep on working at the original speed. 6.6.3. Compressor Running Guidelines The compressor will be activated by sensing the difference between setting temperature and the actual ambient room temperature. The compressor operates as below:
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6.6.4 The high temperature protection of evaporator as below:
6.6.5 The Electric heater operates as below:
a. When TATs-1(2), the fan motor operates, and 3 seconds later, the heater is on and operates at low speed within 30 seconds. After 30 seconds, it changes to the setting speed. If the DAHT temperature checked is higher than the protection temperature, when the heater operating, the fan motor is off automatically. b. When TATs+1(2), the heater is off, and the fan motor keeps on working at setting speed. If the DAHT temperature checked is lower than the protection temperature, and the operation time of fan motor is more than 15 seconds, then the fan motor is off. If the T2 protection gets started, the fan motor also does not work. c. If the DAHT temperature checked is higher than the protection temperature, the heater is off and the fan motor keeps on working. Until the DAHT temperature checked is lower than the protection temperature, the heater is on. d. If the DAHT temperature sensor is in open circuit or has short circuited, the heater is off and the fan motor is off 30 seconds later. e. If the ambient temperature sensor is in open circuit or has short circuited, the heater is off and the fan motor keeps on working until the DAHT temperature checked is lower than the protection temperature, the fan motor is off.
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6.6.6 The Heat pump operates as below:
The Heat pumps operation mode is in accordance with the way of compressors working. The compressor is on (electric heater is off), the fan motor operates according to the anti-cold wind of heat pump. The four-way valve always keeps on. When TA<Ts-1(2), the compressor is on, and when TATs+1(2),it will be off. Before starting the compressor, the indoor fan motor should run for 10 seconds first. TA is not judged within 5 minutes after starting the compressor, but it is judged immediately if the set temperature is changed.
6.7 Dip switches Configurations(Optional)
Note: This Switch board is optional. -Dip switches controls are located behind front panel, through an opening below the control panel. To access, remove front panel.
-Dip switches are accessible without opening the control box.
-Unit must be powered OFF to effectively change their status
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Dip Switches configurations and functions of each dip switch position as follow figure and table:

Table 1 DIP SWITCHES CONFIGURATIONS

No.

UP(ON)

DOWN(OFF)

Remarks

S1

Electric Heat Only

Electric Heat and Pump Heat For Heat Pump unit only

S2

Temperature Display in

Temperature Display in

S3 S4*S5

Wall Thermostat Enable
UPUP:61~86(16~30); UPDOWN:65~78(18~26); DOWNUP:63~80(17~27); DOWNDOWN:68~75(20~24);

Control Panel Enable

Two configurations (S4*S5) combine to select set point range.

S6

Fan Continuous Run for Heating

Fan Cycle for Heating

S7

Fan Continuous Run for Cooling

Fan Cycle for Cooling

S8

Low temp. Protection enable

Low temp. Protection disable

S9(S3 UP)

Use some types of wall Thermostat

Use Control Panel only S9(S3 DOWN)

SW11

Load delay for 3 seconds

Use PTAC other Wall Thermostat
Use Control Panel or some types of wall Thermostat
Normal

You can consult with the sales agency or manufacturer for details
Use control Panel or some types of wall Thermostat, the other one must be turned off
Optional

NOTE: On heating mode, the setting temperature can’t be higher than 29/84.

• Electric Heat Only (for heat pump unit only)
  – This setting is typically used for Emergency Heating.

• Wall Thermostat Enable – A wired wall thermostat can be connected to the unit .If it is, this dip switch must be moved to the
  Wall Thermostat Enable Position, before the wall thermostat will begin control. * Set-point Temperature Limits – Provides a restricted range of temperature control.

.Heat and Cool Fan CON/CYC Dip-switches – Allows the fan to operate in continuous or cycle modes while the unit is in heating and cooling mode.

• Continuous (CON) – Allows fan to run continuously, circulating air even when the temperature setting has been satisfied. This

switch helps to maintain the room temperature closer to the thermostat setting.

• Cycle (CYC) – This setting allows the fan to cycle on and off with the compressor or electric heater. The fan stops a short

time after the temperature setting is satisfied.

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6.8 DIP Switches Configurations by Panel Control (Optional)
1.Turn off the unit.
– Press the up (+) and down (-) buttons together for 3 seconds to activate the dip switches configurations by panel
control.
– See Table 2 for Dip Switches configurations by panel control. NOTE: Press the up (+) and down (-) buttons together for 3 seconds again or no operation within 30 seconds to exit
the dip switches configurations by panel control and the unit will save the last settings. – Display function settings with 2 digitals in LED display window, high (left) for dip switches, low (right) for functions. – Press up (+) button to set the dip switches, press down (-) button to set the functions.

Table 2 DIP SWITCHES CONFIGURATIONS by PANEL CONTROL

No. High(left)

Low(right)

Remarks

/

0

1-by panel control

0-by dip switches

S1

1

1-electric heat only

0-electric heat and pump heat

For Heat Pump unit only

S2

2

S3

3

S4*S5

4

1-tmperature display in

0-temperature display in

3-use control panel or some types of wall thermostat; 2-use some types of wall thermostat;

1-use PTAC other wall thermostat; 0-control panel enable.
4:62~86(17~30); 3:61~86(16~30); 2:65~78(18~26); 1:63~80(17~27);
0:68~75(20~24);

You can consult with the sales agency or manufacturer for details

S6

6

1-fan continuous run for heating

0-fan cycle for heating

Not available for “use PTAC

S7

7

1-fan continuous run for cooling

0-fan cycle for cooling

other wall thermostat”.

S8

8

1-low temp. protection enable 0-low temp. protection disable

Optional

SW7

A

1-front desk control disable

0-front desk control enable

Optional

SW11

B

1-Load delay for 3 seconds

0-normal

Optional

Note: 1. The LED display window will show “00” when you first enter the setting mode, only when you set “01” you can
start the next settings. 2. To activate front desk control function, you need to pull the dip switch SW7 to DOWN(OFF), and then set the
Panel control to A0.
3. After all set, press up (+) and down (-) buttons together for 3 seconds to exit the operation interface and cut off the power. When re-power on, the settings are activated.

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6.9 Wall Thermostat Terminal (Optional)
IMPORTANT: Only trained, qualified personnel should access electrical panel on unit and install electrical accessories. Please contact your local electrical contractor, dealer, or distributor for assistance. 1.Thermostat Wire Routing
Thermostat wire is field supplied. Recommended wire gauge is 18 to 20 gauge solid thermostat wire. NOTE: It is recommended that extra wires are run to unit in case any are damaged during installation. Thermostat wire should always be routed around or under, NEVER through, the wall sleeve. The wire should then be routed behind the front panel to the easily accessible terminal connector.
NOTE: Refer to thermostat installation instructions for details on installing wall thermostat. 2. Installation instruction of some types of wall Thermostat (you can Consult with the sales agency or manufacturer for details) – Pull the dip switch to the DOWN(OFF) position as shown below.
– Insert the wire connector of the wall thermostat into the relevant terminal according to different shapes as shown below.
3. Installation instruction of PTAC other Wall Thermostat – Remove the two screws as shown below and take the cover panel down.
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TERMINAL DESIGNATION

FC(L)

Front desk control terminal L

FC(N)

Front desk control terminal N

LOW-FAN Low fan speed

HI-FAN

High fan speed

4-WAY

4-way valve; Reverse cycle (Energized in

Heat) For heat pump models

HEAT2

Electrical heater 2

HEAT1

Electrical heater 1

COMP

Compressor

24V(N)

24VAC terminal N(Neutral),Common

24V(L)

4VAC terminal L

Caution: UNIT DAMAGE HAZARD · Failure to follow this caution may result in equipment damage or improper operation. · Improper wiring may damage unit electronics. Common busing is not permitted. Damage or
erratic operation may result. Note:
· Use terminal 4-way for heat pump connection only. · Suggest set the compressor protection time more than 3 minutes in wall thermostat. If set
less than 3 minutes, the compressor will restart delay 3 minutes still. · Wall thermostat must be heating changeover 4-way valve. · For thermostats that have only one fan speed output (on or auto),the fan speed is
determined by how the terminal connector is wired. If Low fan is desired, wire the G output from the thermostat to (LOW-FAN) on the units terminal block. If High fan is desired, wire the G output from the thermostat to (HI-FAN) on the units terminal block. · The range of set temperature of Wall thermostat must be in consonance with the range of DIP switch setting. · Wall thermostat must be set the type properly in consonance with the unit type : heat pump or no heat pump. · If the Wall thermostat has only one electrical heater output, connect the two terminals of HEAT 1 and HEAT 2, the unit can operate two electrical heaters(only for the unit has two electrical heaters). Otherwise operate one electrical heater. · Please do not remove the control panel.

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4. FRONT DESK CONTROL The controller can handle a switch signal from FC(L) and FC(N) input, called front desk control. Input must be 24VAC. If system doesn’t receive a 24VAC signal, it will turn unit off; otherwise, the unit runs in normal control. – The DIP switch can control the FRONT DESK CONTROL feature. The DIP switch is on the DOWN
position, the unit will be turn off; otherwise, the unit runs in normal control.
7. Unit components
Decomposition figure
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wall

Installation details

8.1 How to install the unit

Installation figure

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– For existing sleeve, you should measure the wall sleeve dimensions.
– Install the new air conditioner according to these installation instructions to achieve the best performance. All wall sleeves used to mount the new air conditioner must be in good structural condition and have a rear grille that securely attaches to the sleeve or the flange of the sleeve to secure the new air conditioner.
– To avoid vibration and noise, make sure the unit is installed securely and firmly.
– When installing the sleeve, make certain there is nothing within 20 of the back that would interfere with heat radiation and exhaust air flow. (See Fig.2)

Dimension of air conditioner

PREPARATION OF SLEEVE ASSEMBLY(optional)
– Refer to the installation instruction of sleeve assembly for details.
UNIT INSTALLATION
– Carefully remove shipping tapes from the front panel. (See Fig.3) (See Fig.3) – Remove the front panel. (See Fig.4) – Remove the shipping screw from the vent door. (See Fig.5)
UNIT INSTALLATION (CONTINUED)
– Rotate the vent control lever to either open or close the vent door. (See Fig.6) NOTE: When vent control lever set at CLOSE, only the air inside the room is circulated and filtered. When set at OPEN, some outdoor air will be drawn into room. This will reduce heating or cooling efficiency.
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– Lift unit level and slide unit into wall sleeve until firmly against front of wall sleeve and secure with 4 screws and washers (supplied in the SLEEVE ASSEMBLY) through the unit flange holes. (See Fig.7 and Fig.8) – Reinstall front panel.(See Fig.9) Place tabs over top rail A . Push Inward at bottom until panel snaps into place B.
8.2 Care and cleaning
· FRONT PANEL AND CASE – Turn unit off and disconnect power supply. To clean, use water and a mild detergent. Do not use bleach and abrasives. Some commercial cleaners may damage the plastic parts. · OUTDOOR COIL – Coil on outdoor side of unit should be checked regularly. Unit will need to be removed to inspect dirt build-up that will occur on the inside of the coil. If clogged with dirt and soot ,coil should be professionally cleaned. Clean inside and outside of outdoor coils regularly. NOTE: Never use a high-pressure spray on coil.
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! CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or improper operation. Airflow restriction may cause damage to the unit.
– The most important thing you can do to maintain unit efficiency is to clean the filters once every two weeks as required. Clogged filters reduce cooling, heating and airflow.
! CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or improper operation. · Do not operate unit without filters in place. If a filter becomes torn or damaged, it should be replaced immediately. · Operating without filters in place or with damaged filter will allow dirt and dust to reach indoor coil and reduce cooling ,heating, airflow and efficiency of unit. Airflow restriction may cause damage to unit.
– The most important thing you can do to maintain
unit efficiency is to clean the filters once every two weeks as required. Clogged filters reduce cooling, heating and airflow.
– Keeping filters clean will:
Decrease cost of operation. Save energy. Prevent clogged indoor coil. Reduce risk of premature component failure.

VENT DOOR FILTER IMPORTANT:TURN UNIT OFF BEFORE
CLEANING.
– If the vent door is open, access requires the removal of the unit from the wall sleeve. Clean the vent filter twice a year or as required. – Make sure to remove the shipping screw from the vent door.(See.Fig.5) – Rotate the vent control lever to open the vent door. (See. Fig.6) – Remove four screws from the vent door filter.
(See.Fig.12) – First pull out the vent door steel wire from the hole of the vent door, then take off the vent door and filter. (See.Fig.12) – Clean the filter. Dry thoroughly before placing. – Replace the vent door and filter, reinstall the four
screws. – Reinsert the vent door steel wire into the hole of the vent door.

Vent door control lever

Screws Fig.12

Vent door steel wire
Vent door filter Vent door

– To Clean Air Filters: Vacuum off heavy soil. Run water through filter. Dry thoroughly before replacing.

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9. Operation characteristics 9.1 Cooling operation

Outdoor air temp. DB

45

40

Dry Cooling

35

30

25

20

5 10 15 20 25 30 35 40 Indoor air temp. DB

9.2 Heating operation

Indoor air temp. DB

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Power connection options

Appropriate power cord accessory kit is determined by the voltage, and amperage of the branch circuit. The unit does not come with a power cord (or hard wire kit). An accessory power cord must be ordered to connect the unit to the outlet. If the unit is to be hard wired, an accessory hard wire kit must be ordered. IMPORTANT: For 265V units, if a power cord is selected, it must plug into the 265V subbase accessory. Cord-connected Units The 240V field supplied outlet must match the plug for the standard 208/230V units and be within reach of the service cord. The standard cord-connected 265V units require an accessory electrical subbase for operation. Power Cord Protection The power cord for 230/208v units provide power cord fire protection. Unit power automatically disconnects when unsafe conditions are detected. Power to the unit can be restored by pressing the reset button on plug head. Upon completion of unit installation for 230/208V models, an operational check should be performed using the TEST/RESET buttons on the plug head. NOTE: The 265V models do not incorporate this feature as they require use of the electrical subbase accessory. Our sub base accessory is being developed
THE APPEARANCE OF POWER PLUG IS DIFFERNENT BECAUSE OF DIFFERENT SUPPLIER
25

UNI T MODEL
ACIQ-07PTC ACIQ-09PTC ACIQ-12PTC ACIQ-15PTC ACiQ-15PTC5

POWER CONNECTION CHART

15A 208 / 230 V

CODE OF POWER SUPPLY KIT 20A
208 / 230 V

6-15P(15A / 240V )

30A 208 / 230 V

6-20P(20A / 240V )

26

Troubleshooting

11.1 Error Display

Codes

Contents

AS Open or short circuit of T1 temperature sensor

ES Open or short circuit of T2 temperature sensor

CS Open or short circuit of T3 temperature sensor

oS Open or short circuit of T4 temperature sensor

HS Open or short circuit of T5 or T6 temperature sensor

Lo Temperature is lower than display range(0/32)

HI Temperature is higher than display range(37/99)

E4 Communication malfunction between main control board and display board.

LE Drive-by-wire control failure

27

11.2 Troubleshooting

11.2.1 Open circuit or short circuit of temperature sensor diagnosis and solution(AS/E5/CS/oS/HS)

Error Code

AS/E5/CS/oS/HS

Malfunction decision conditions

If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure.

Supposed causes Troubleshooting:

Wiring mistake Faulty sensor Faulty PCB

Check the connection between temperature
sensor and PCB.

No

Correct the connection

Yes

Measure the resistance

value of the sensor

No

Repalce the sensor

Yes Replace indoor main PCB

T5/T6

T4 T3 T2 T1
28

11.2.2 Communication malfunction between main control board and display board. (E4)

Error Code

E4

Malfunction decision conditions Supposed causes
Troubleshooting:

Main control board does not receive feedback from display board during 120 seconds.
Wiring mistake Faulty display board Faulty main control board

Communication malfunction between main control board and display board

Check the signal wire between the Display board and the main board,
is it connected good?

No

Yes

Reconnect and retry. Is error

still display?

Yes

Replace display board, Is error still display?
Yes
Replace the main control board

No No Trouble is solved

29

11.2.3 Drive-by-wire controller failure. (LE)

Error Code

LE

Malfunction decision conditions
Supposed causes Troubleshooting:

1, Electric heating signal or compressor signal is on, but fan signal is off
2, Electric heating signal and compressor signal are on, but 4-way valve signal is off
3, Cooling only models have heating signal, or the 4-way valve signal and compressor signal are on at the same time.
Wiring mistake
Faulty wire controller
Wire controller doesn’t match

Electric heating and compressor are on, but 4-
way valve is of f
Yes
Check whether the wiring between controller and dip
swit ch board is correct
Yes
Wire controller doesn’t match, change the wire
controller

No
No reconnection

Electric heating or compressor is on, but fan is
of f
Yes
Check whether the wiring between controller and dip
swit ch board is correct

No No

Yes

reconnection

4-way valve is set wrong

Cooling only models have heating signal, or the 4-way valve and compressor signal
are on at the same time.
Yes
Wire controller is set wrong

DIP SWITCH TERMINAL FC(L) FC(N) LOW-FAN HI-FAN 4-WAY HEAT2 HEAT1 COMP 24V(N) 24V(L)

DESIGNATION Front desk control terminal L Front desk control terminal N Low fan speed High fan speed 4-way valve(for heat pump model) Electrical heater 2 Electrical heater 1 Compressor 24VAC terminal N COM 24VAC terminal L

24V CONTROLLER
GL GH B W (W) Y C R

30

POSSIBLE CAUSES UNIT DOES NOT START Unit may have become unplugged Fuse may have blown Circuit breaker may have been tripped Unit may be off Unit may be in a protection mode.
UNIT NOT COOLING/HEATING ROOM Unit air discharge section is blocked Temperature setting is not high or low enough Note: Setpoint limits may not allow the unit to heat or cool the room to the temperature desired. Check section on dipswitch settings. Unit air filters are dirty. Room is excessively hot or cold when unit is started. Vent door left open. Unit may be in a protection mode. Compressor is in time delay.
DISPLAY HAS STRANGE NUMBERS/ CHARACTERS ON IT UNIT MAKING NOISES
WATER DRIPPING OUTSIDE
WATER DRIPPING INSIDE Wall sleeve is not installed level
ICE OR FROST FORMS ON INDOOR COIL
Low outdoor temperature Dirty filters
COMPRESSOR PROTECTION Power may have cycled, so compressor is in a restart protection.

SOLUTONS Check that plug is plugged securely in wall receptacle. Note: Plug has a test/reset button on it. Make sure that the plug has not tripped. Replace the fuse. See Note 1. Reset circuit breaker. See Note 1. Turn unit on (bottom right button on keypad). Make sure that curtains, blinds or furniture are not restricting or blocking unit airflow. Reset to a lower or higher temperature setting. Remove and clean filters. Allow sufficient amount of time for unit to heat or cool the room. Start heating or cooling early before outdoor temperature, cooking heat or gatherings of people make room uncomfortable. Close vent door. Check dipswitch settings for desired comfort. Wait approximately 3 minutes for compressor to start.
The unit may be in a protection mode. The unit may be set for (instead of ).
Clicking, gurgling and whooshing noises are normal during operation of unit.
If a drain kit has not been installed, condensation runoff during very hot and humid weather is normal. See Note 2.If a drain kit has been installed and is connected to a drain system, check gaskets and fittings around drain for leaks and plugs.
Wall sleeve must be installed level for proper drainage of condensation .Check that installation is level and make any necessary adjustments. When outdoor temperature is approximately 55 or below, frost may form on the indoor coil when unit is in Cooling mode. Switch unit to FAN operation until ice or frost melts. Remove and clean filters.
Random Compressor restart-Whenever the unit is plugged in, or power has been restarted, a random compressor restart will occur. After a power outage, the compressor will restart after approximately 3 minutes. Compressor Protection- To prevent short cycling of the compressor, there is a random startup delay of 3 minutes and a minimum compressor run time of 3 minutes.

ELECTRIC HEATING FAILURE

Clean the evaporator once every three months by professional people.

NOTES: 1.If circuit breaker is tripped or fuse is blown more than once, contact a qualified electrician. 2.If unit is installed where condensation drainage could drip in an undesirable location, an accessory drain kit
should be installed and connected to drain system.

31

Characteristic of temperature sensor

Temp./ -10/14 -9 /15.8 -8 /17.6 -7 /19.4 -6 /21.2 -5 /23 -4 /24.8 -3 / 26.6 -2 / 28.4 -1 /30.2 0 /32 1 /33.8 2 /35.6 3 /37.4 4 /39.2 5 /41 6 /42.8 7 /44.6 8 /46.4 9 /48.2 10 /50 11 /51.8 12 /53.6 13 /55.4 14 /57.2 15 /59 16 /60.8

Resistance K
62.2756

Temp./ 17/62

58.7079

18/64

56.3694

19/66

52.2438

20/68

49.3161

21/70

46.5725

22/72

44

23/73

41.5878

24/75

39.8239

25/77

37.1988

26/79

35.2024

27/81

33.3269

28/82

31.5635

29/84

29.9058

30/86

28.3459

31/88

26.8778

32/90

25.4954

33/91

24.1932

34/93

22.5662

35/95

21.8094

36/97

20.7184

37/99

19.6891

38/100

18.7177

39/102

17.8005

40/104

16.9341

41/106

16.1156

42/108

15.3418

43/109

Resistance K
14.6181 13.918 13.2631 12.6431 12.0561 11.5 10.9731 10.4736 10 9.5507 9.1245 8.7198 8.3357 7.9708 7.6241 7.2946 6.9814

Temp./ 44/111 45/113 46/115 47/117 48/118 49/120 50/122 51/124 52/126 53/127 54/129 55/131 56/133 57/135 58/136 59/138 60/140

6.6835 6.4002 6.1306 5.8736 5.6296 5.3969 5.1752 4.9639 4.7625 4.5705

61/142 62/144 63/145 64/147 65/149 66/151 67/153 68/154 69/156 70/158

Resistance K
4.3874 4.2126 4.0459 3.8867 3.7348 3.5896 3.451 3.3185 3.1918 3.0707 2.959 2.8442 2.7382 2.6368 2.5397 2.4468 2.3577 2.2725 2.1907 2.1124 2.0373 1.9653 1.8963 1.830 1.7665 1.7055 1.6469

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