Daikin RY50G - Cooling;Heating Operation Starts but Stops Immediately

Troubleshooting Based on Equipment Condition Si-71A
84 Troubleshooting
3.4 Cooling/Heating Operation Starts but Stops Immediately.
Applicable Model
All models of Skyair series
Error Detection
Method
Error Generating
Condition
Possible Cause
„
Excess charge of refrigerant
„
Air intrudes into refrigerant system
„
Faulty pressure switch
„
Faulty magnetic switch for outdoor unit fan motor
„
Faulty aux. relay for outdoor unit fan motor
„
Soiled heat exchanger of outdoor unit
„
There is an interfering item in air flow of outdoor unit
„
Malfunction of 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
„
Malfunction of indoor unit fan
Troubleshooting
Diagnose based on the error code on
remote controller
Malfunction of fan motor
Check the magnetic switch and aux.
switch for fan motor
Cleaning
Remove the disturbing item
Cleaning of the heat exchanger
After vacuum drying, charge correct
amount of refrigerant
Check the pressure switch
Possible causes as follows:
* Refrigerant overcharge
* Mixing of air in refrigerant
system
* Faulty pressure switch
Does the
fan rotate?
Is the
filter soiled?
NO
NO
Is the
operation lamp
of remote controller
flashing?
Is the
operation lamp
of indoor unit
photo-sensing
section
flashing?
Is the type
of remote controller
LC or wireless?
Is there any
item disturbing
airflow?
NO
NO
Is the heat
exchanger soiled?
YES
NO
YES
YES
YES
YES
Wireless
YES
Heating: Indoor unit
Cooling: Outdoor unit
LC
[]
(SF033)