Daikin GQI-Eco Series, Service Manual

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