Cooling / Heating Operation Starts But Stops Immediately - Daikin RZQG71L9V1 Service Manual

Symptom-based Troubleshooting
2.4

Cooling / Heating Operation Starts but Stops Immediately

All models of SkyAir series
Applicable Model
 Overcharge of refrigerant
Supposed
 Air mixed in refrigerant system
Causes
 Defective pressure switch
 Defective magnetic switch for outdoor unit fan motor
 Defective aux. relay for outdoor unit fan motor
 Soiled heat exchanger of outdoor unit
 There is an interfering item in airflow of outdoor unit.
 Defective outdoor unit fan
 Soiled air filter of indoor unit
 Soiled heat exchanger of indoor unit
 There is some interfering item in airflow of indoor unit.
 Defective indoor unit fan
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the type
of remote controller wired
or wireless?
Wireless
Is the
operation lamp of
indoor unit signal receiving
part flashing?
Heating: Indoor
NO
unit
Cooling: Outdoor
unit
Does the fan rotate?
YES
Is the filter soiled?
NO
Is there any item
interfering airflow?
NO
Is the heat
exchanger soiled?
NO
Possible causes as follows:
* Refrigerant overcharge
* Mixing of air in refrigerant system
* Defective pressure switch
104
Is the operation
wired
lamp of remote controller
flashing?
NO
YES
NO
YES
YES
YES
YES
Diagnose based on the error
code on remote controller
Defective fan motor. Check the
magnetic switch and auxiliary
switch for fan motor.
Cleaning
Remove the interfering item.
Cleaning of the heat exchanger
After vacuum drying, charge
correct amount of refrigerant.
Check the pressure switch.
ESIE15-13C
Service Diagnosis