Carrier OG-40MHH-04 High Wall Ductless System Owner’s Manual

Carrier OG-40MHH-04 High Wall Ductless System

A NOTE ABOUT SAFETY

Any time you see this symbol be aware of the potential for personal injury. There are 3 levels of precaution:

1. DANGER identifies the most serious hazards which will result in severe personal injury or death.
2. WARNING signifies hazards that could result in personal injury or death.
3. CAUTION is u sed to identify unsafe practices which could result in minor personal injury or product and property damage.
4. NOTE is used to highlight suggestions that will result in enhanced installation, reliability, or operation.

GENERAL
The ducted fan coil unit provides quiet, maximum comfort. In addition to cooling and/or heating, the ducted fan coil unit matched with an outdoor condensing unit filters and dehumidifies the air in the room to provide maximum comfort.

IMPORTANT : The ducted fan coil 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 ducted fan coil 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 ducted fan coil unit has five operating modes:

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

FAN Only

In the FAN Only mode, the system filters and circulates the room air without changing room air temperature.
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 with two dashes (–) on the display, which will turn off the indoor unit until all the indoor units are in the same mode (COOLING or HEATING). 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.

Wireless Remote Control
The remote control transmits commands to set up and operate the system. The control has a window display panel that displays the current system status. The control can be secured to a surface when used with the mounting bracket provided. Wired Remote Control (Optional)

Refer to the Wired Controller manual. 24V Interface (Optional)
Allows the control of the Ductless System with a third-party thermostat. 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 with two dashes (–) on the display, which will turn off the indoor unit until all the indoor units are in the same mode (COOLING or HEATING). HEATING is the system’s priority mode. Simultaneous HEATING and COOLING are 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 model prioritizes air dehumidification but it does not take the place of a dehumidifier.

Wireless Remote Control
The remote control transmits commands to set up and operate the system. The control has a window display panel that displays the current system status. The control can be secured to a surface when used with the mounting bracket provided. Wired Remote Control (Optional) Refer to the Wired Controller manual.

24V Interface (Optional)
Allows the control of the Ductless System with a third-party thermostat.

PARTS LIST

INDOOR UNIT DISPLAY INDICATOR

REMOTE CONTROLS

FUNCTION BUTTONS (HEAT PUMP ONLY)

Before using the new air conditioner, familiarize yourself with the remote control. The following is a brief introduction to the remote control.

Remote LCD Screen Indicators

FUNCTION BUTTONS (COOLING ONLY)

Before using the new air conditioner, familiarize yourself with the remote control. The following is a brief introduction to the remote control.

NOTE: For models of RG10A4(B1)/BGEFU1, RG10A5(B1)/BGEFU1 and RG10A5(B1)/BGCEFU1, press together and hold the buttons at the same time for 3 seconds to alternate the temperature display between the °C and °F scales. The FRESH feature is not available for models of RG10A4(B)/BGEF and RG10A4(B1)/BGEFU1.

Remote LCD Screen Indicators

REMOTE CONTROL

IMPORTANT: The wireless 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 unit (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 the airflow direction.
Refer to “FUNCTION BUTTONS (HEAT PUMP ONLY)” on page 5 for a detailed description of all the capabilities of the remote control.

Battery Installation

Two AAA 1.5v alkaline batteries (included) are required to operate the remote control.

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 of 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
Before the operation, ensure the unit is plugged in and the power is available. AUTO Mode (Heat Pump Model Only)
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.

HEAT Mode (Heat Pump Model Only)

•  Press MODE to select the HEAT mode.
•  Set your desired temperature using TEMP  or TEMP
•  Press FAN to select the fan speed in the range of AU-100%.
•  Press MODE to select the FAN mode.
•  Press FAN to select the fan speed in the range of AU-100%.
•  Press ON/OFF to start the unit

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.

DRY Mode

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

SETTING THE TIMER

TIMER ON

• Press TIMER to initiate the ON time sequence.

1.  When setting the TIMER ON or TIMER OFF, the time increases by 30 minutes increments with each press, up to 10 hours. After 10 hours and up to 24, it increases in 1 hour increments. (For example, press 5 times to get 2.5h, and press 10 times to get 5h,) The timer reverts to 0.0 after 24.
2.  Cancel either function by setting its timer to 0.0h.

TIMER ON and OFF

How to Use Advanced Functions

LED Display

Note: This function is for the heat pump air conditioner only. Press this button 2 times during one second under the HEAT Mode and set a temperature of 62°F/17°C or 20°C (for model RG10B10(B)/BGEF) to activate the FP function. Press On/Off, Sleep, Mode, Fan, and Temperature while operating, cancels this function.

Sleep Function

The SLEEP function is used to decrease energy while occupants sleep (and do not require the same temperature settings for comfort). This function can only by activated via the remote control.

SET Function

• Press SET to enter the function setting, then press SET or TEMP or TEMP
• to select the desired function. The selected symbol flashes on the display area, press OK to confirm.
• To cancel the selected function, just perform the same procedures as above.
• Press SET to scroll through operation functions as follows:

FRESH Function(some units) :
When the FRESH function is initiated, the Ionizer/Plasma Dust Collector (depending on models)
is energized and helps to remove pollen and impurities from the air.

Follow me function :
The FOLLOW ME function enables the remote control to measure the temperature at its current location
and sends this signal to the air conditioner every 3 minutes interval. When using AUTO, COOL, or HEAT modes, measuring ambient temperature from the remote control (instead of from the indoor unit itself) allows the air conditioner to optimize the temperature around you and ensure maximum comfort.
NOTE: Press and hold Turbo for seven seconds to start/stop the Memory feature of the FOLLOW ME function If the memory feature is activated, “ON” displays for 3 seconds on the screen. If the memory feature is stopped, “OF” displays for 3 seconds on the screen.

CLEANING, MAINTENANCE, AND TROUBLESHOOTING

ELECTRICAL SHOCK HAZARD
Failure to follow this caution may result in personal injury or death. Always turn off power to the system before performing any cleaning or maintenance to the system. Turn off the outdoor disconnect switch located near the outdoor unit. Be sure to disconnect the indoor unit if on a separate switch.

EQUIPMENT DAMAGE/OPERATION HAZARD
Failure to follow this caution may result in equipment damage or improper unit operation.
Operating the system with dirty air filters may damage the indoor unit and could cause reduced cooling performance, intermittent system operation, frost build-up on indoor coil or blown fuses.

Periodic Maintenance
Periodic maintenance is recommended to ensure the proper operation of the unit. Recommended maintenance intervals may vary depending on the installation environment, e.g., dusty zones, etc. Refer to Table 2 on page 17.

Cleaning the Coil
Clean the coil at the beginning of each cooling season, or when necessary. Use a vacuum cleaner or a long-bristle brush to avoid damage to the coil fins.

Cleaning the Air Filters
Remove and clean the air filters once a month. A clogged air conditioner can reduce the cooling efficiency of your unit, and can also be bad for your health.
NOTE: If air filters show signs of excessive wear or are torn, they must be replaced. Contact your local dealer for replacement filters.

1.  The air filter is under the top air inlet grill.
2.  Grip the tab on the end of the filter, lift it up, then pull it towards yourself.
3.  If your filter has a small air freshening filter, un-clip it from the larger filter. Clean the air freshening filter with a hand-held vacuum.
4.  Clean the large air filter with warm, soapy water. Be sure to use a mild detergent.
5.  Rinse the filter with fresh water, then shake off any excess water.
6.  Dry it in a cool, dry place, and refrain from exposing it to direct sunlight.
7.  When dry, re-clip the air freshening filter to the larger filter, then slide it back into the indoor unit.

Indoor Unit Front Panel

To clean the front panel on the indoor unit, wipe the outside with a soft, dry cloth.

Preparing for Extended Shutdown Period
Clean the filters and reposition them in the unit. Operate the unit in FAN ONLY mode for 12 hours to dry all internal parts. Turn the main power supply off and remove batteries from the remote control.

System Operation Recommendations
The items outlined in the following list help to assure proper system operation:

•  Replace both remote control batteries at the same time.
•  Point the remote control toward the unit display panel when transmitting a command.
•  Keep doors and windows closed while unit is operating.
•  Contact an authorized service representative if a problem arises that cannot be easily resolved.
•  Do not perform cleaning or maintenance activities while the unit is on.
•  Keep the display panel on the unit away from direct sunlight and heat as this may interfere with remote control transmissions.
•  Do not block air intakes and outlets on the indoor or outdoor units.

Energy Saving Recommendations
The following recommendations will add greater efficiency to the ductless system:

•  Select a comfortable thermostat setting and leave it at chosen setting. Avoid continually raising and lowering the setting.
•  Keep the filter clean. Frequent cleaning may be necessary depending on indoor air quality.
•  Use drapes, curtains, or shades to keep direct sunlight from heating the room on very hot days.
•  Limit the unit’s run time by using the TIMER function.
•  Do not obstruct the air intake on the front panel.
•  Turn on the air conditioning unit before the indoor air becomes too uncomfortable.

TROUBLESHOOTING

Refer to Table 3 on page 18 before contacting your local dealer.

Common Problems

protection feature that prevents the unit from overloading. The unit cannot be restarted within three minutes of being turned off.

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 starts operating in the previously selected mode again.
The set temperature has been reached, at which point the unit turns off the compressor. The unit 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 the 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 may occur after running the unit in HEAT mode due to expansion and contraction of the unit’s plastic parts.

Both the indoor 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.

Operation is erratic, unpredictable, or unit is unresponsive

| Interference from cell phone towers and remote boosters may cause the unit to malfunction. In this case, try the following:

•  Disconnect the power, then reconnect.

•  Press the ON/OFF button on the remote control to restart the operation.

NOTE: If an issue 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.

Unit/System Does Not Work

| The circuit breaker has tripped or a fuse has blown.| Reset the circuit breaker or replace the fuse with the specified replacement fuse.
Power failure| Restart the operation when the power is restored.
Diagnostic lights illuminate.*| Call your service representative
Voltage is too low.| Call your service representative.

Poor cooling performance

| The filter is blocked by dust.| Clean the air filter
Temperature is not set properly.| Check the temperature and reset if necessary.
A window or door is open.| Close the window or door.
The outdoor unit is obstructed.| Turn the unit off, remove the obstruction and turn it back on.
The fan speed is too low.| Change the fan speed selection.
The operation mode is in Fan instead of Cool.| Change the operating mode to Cool or reset the unit.

Poor heating performance

| The filter is blocked with dust.| Clean the filter.
The temperature is set too low.| Check the temperature and reset if necessary.
A window or door is open| Ensure all the doors and windows are closed while operating the unit.
The outdoor unit is obstructed.| Turn unit off, remove the obstruction and turn the unit back on.
Unit stops during operation| The OFF timer is not operating correctly.| Restart the operating mode.
Diagnostic lights illuminate| Call a service representative for service

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>