Operating Features And Care; Troubleshooting - Carrier 42HQM Owner's Manual

42HQM
Operating features and care - Troubleshooting
Operating conditions
• Temperature ranges suitable for unit operation are as follows.
MODE
COOL
HEAT
DRY
• If the unit operates beyond the max. temperature conditions for a
long time, system diagnostics may detect a malfunction and the
unit will not operate properly.
• If the unit operates under abnormal conditions for a long time with
extremely high humidity, condensed water may drip from the unit.
Minimum operation time
• In normal operation, there is a minimum operation time of 3
minutes between the compressor turning on and turning back off.
Heating features
• At unit start up in heating mode, there will be a preheating period
of about 5 minutes before the unit is ready to deliver warm air.
• During this period the preheating-defrost LED is ON, indicating
preheating.
• When the outdoor temperature is too low, the heating capacity will
be reduced; in this case add another heater appliance to provide
sufficient heating capacity.
Defrost operation
• At outdoor temperatures below 7°C, frost may form on the outdoor
unit coil which makes periodic defrosting necessary.
• The defrost time will last from 5 to 10 minutes; during this period
the preheating-defrost LED is ON, indicating the defrosting status.
Power supply failure
If a power supply failure happens during operation, the unit stops
completely.
• When the power supply is restored, the indoor unit operating LED
starts flashing at 1 second intervals.
• To restart the unit, press start button
• Mobile telephones or other small appliances operating near the air
conditioner may disrupt its operation. In this case turn the unit
main power switch OFF and ON.
• To restart the unit, press start button
Operating priority
It is not possible to operate the indoor units in various rooms in a
different mode. If the operating mode of a unit in one room is
different from the one located in another room, the unit activated
first is given priority.
Normal operation
Any of the following can occur during normal operation:
• Sometimes a gurgling sound can be heard during operation or
when the unit stops.
- This is the sound of the refrigerant flowing through the unit.
• Bad odours are emitted from the unit.
- Odours such as smoke or cosmetics can accumulate as the
room air circulates through the unit.
- Cleaning the filters will reduce this problem.
- The unit is in defrost mode.
• A crackling sound can sometimes be heard during operation or
when the unit is turned ON.
- This is the sound of plastic expanding due to on abrupt
temperature change.
INDOOR OUTDOOR
21~32°C 15~43°C
Max. 27°C -5~24°C
Min. 17°C 15~43°C
on the remote control.
on the remote control.

Troubleshooting

Trouble / Check points /
ACTION
The unit does not operate:
• Has the circuit breaker tripped or has the fuse blown?
RESET THE CIRCUIT BREAKER OR REPLACE THE FUSE WITH THE SPECIFIED
.
REPLACEMENT FUSE
• Has there been a power failure?
RESTART OPERATION WHEN POWER IS RESUMED
• Do the LEDs blink quickly?
CALL YOUR SERVICE REPRESENTATIVE
Cooling is abnormally low:
• Is the filter blocked with dust?
.
CLEAN THE AIR FILTER
• Has the temperature been set property?
CHECK AND RESET IT IF NECESSARY
• Are the windows or doors open?
CLOSE THE WINDOWS AND DOORS
• Is anything obstructing the outdoor unit?
.
REMOVE THE OBSTRUCTION
• Is the fan speed too low?
CHANGE THE FAN SPEED SELECTION
• Is the unit in Economy or dehumidification operating mode?
CHANGE TO COOLING OPERATION OR RESET
Heating is abnomally low:
• Is the filter blocked with dust?
.
CLEAN THE AIR FILTER
• Has the temperature been set too low?
CHECK AND RESET IT IF NECESSARY
• Are the windows or doors open?
CLOSE THE WINDOWS AND DOORS
• Is the unit in Economy operating mode?
CHANGE TO HEATING OPERATION
• Is anything obstructing the outdoor unit?
.
REMOVE THE OBSTRUCTION
Unit stops during operation:
• Is the OFF timer operating?
.
RESTART THE OPERATION MODE
• Does the LED flash?
CALL YOUR SERVICE REPRESENTATIVE
It is impossible to change the selections:
• Are you unable to change the fan speed?
CHECK IF THE DISPLAY SHOWS DEHUMIDIFICATION MODE
DRY ( ).
DEHUMIDIFICATION WHEN THE DEHUMIDIFICATION MODE IS
,
SELECTED THE FAN SPEED IS AUTOMATICALLY REGULATED BY THE AIR
.
CONDITIONER IT CAN ONLY BE SELECTED IN COOLING OPERATING MODE
Is it not possible to select the desired function?
• ON
MAKE SURE THAT UNIT SYMBOL
.
ILLUMINATED
The acoustical "signal received" sound is not emitted:
• Does the indoor unit not emit an acoustical "signal received"
sound either, when start button
WHEN YOU PRESS THE START BUTTON
IS DIRECTED TOWARDS THE UNIT SIGNAL RECEIVER
DIRECT THE REMOTE CONTROL TOWARDS THE UNIT SIGNAL RECEIVER
.
PRESS START BUTTON
ATTENTION:
If the above actions do not correct the operation, consult the
dealer from whom you bought the unit.
E N G L I S H
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ON REMOTE CONTROL DISPLAY IS
is pressed?
VERIFY THAT THE REMOTE CONTROL
.
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,
THEN
GB - 11