19.
TROUBLESHOOTING
If any malfunction of the air conditioner unit is noted, immediately switch off the power supply to the unit. Check
the following fault conditions and causes for some simple troubleshooting tips.
Fault
Causes/Action
1. The compressor does not operate 3 minutes after
-
Protection against frequent starting. Wait for 3 to 4
the air conditioner unit is started.
minutes for the compressor to start operating.
2 • The air conditioner unit does not operate.
-
Power failure, or the fuse needs to be replaced.
3. The air flow is too low.
4. Discharge air flow has bad odour.
5. Condensation on the front air grille of the indoor unit.
-
The power plug is disconnected.
-
It is possible that your delay timer has been set
incorrectly.
-
If the fault persist after all these verifications, please
contact the air conditioner unit installer.
-
The air filter is dirty.
-
The doors or windows are open.
-
The air suction and discharge are clogged.
-
The regulated temperature is not high enough.
-
Odour may be caused by cigarettes, smoke particles,
perfume etc. which might have adhered onto the coil.
-
This is caused by air humidity after an extended long
period of operation.
-
The set temperature is too low, increase the
temperature setting and operate the unit at high fan
speed.
6.
Water flowing out from the air conditioner unit.
7.
Hissing air flow sound from the air conditioner unit
-
Switch off the unit and call dealer.
-
Refrigerant fluid flowing into the evaporator coil.
during operation.
8.
Room Temperature Sensor Fail display on Remote
-
If sensor is short/ open / not connected, it will be
(C9)
considered as sensor fail. It will automatically reset
when Room sensor is corrected.
9.
Indoor Antifreeze sensor Fail display on Remote
(C4)
10. HP Error display on Remote (E3).
-
If sensor is short/ open/ not connected, it will be
considered as sensor fail. It will automatically reset
when Indoor Antifreeze sensor is corrected.
-
If discharge pressure is very high or over the limit
then high pressure switch (HP) cut off the power
supply to compressor.
-
This is caused when condenser fan does not work.
-
Ambient temperature is very high, above the limit.
11. LP Error display on Remote (E4).
-
If Suction pressure is too low or below the limit then
low pressure switch (LP) cut off the power supply to
compressor.
12. Communication Failure(U4)
-
This is caused by Communication wire break or faulty.
-
The Error will be Reset after changing the
Communication wire
12. Indoor Antifreeze Activation on remote (A5).
-
If indoor coil tube temperature reaches s 1
0
C
1. Check unit airflow for any restriction (Air filter blockage)
2. Low gas charge
I
Refrigerant circuit partial blockage.
If the fault persists, please call your local dealer /serviceman.
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