Equipment Operates But Does Not Provide Heating - Daikin ZQG71~140L7V1B Service Manual

ESIE12-06
2.7

Equipment Operates but does not Provide Heating

Applicable Model All models of SkyAir series
Supposed
 Overcharge of refrigerant
Causes  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 an interfering item in airflow of indoor unit.
 Defective indoor unit fan
Service Diagnosis
Symptom-based Troubleshooting
121