Service Diagnosis - York YH9FYC18BAH-A-X Service Manual

10.Service Diagnosis

10.1 Problem Symptoms and Measures
Symptom
None of the units
operates
Equipment
operates but does
not cool, or does
not heat (only for
heat pump)
Large operating
noise and
vibrations
10.2 Parameter of primary electronic appliance
NO Name
1 Compressor
2 Fan motor
Check Item
Check the power supply.
Check the indoor PCB
Diagnosis by service
port pressure and
operating current.
Check the installation
condition.
Parameter
Rated voltage:208/230V
Rated current： 7.9A
Rated frequency： 60HZ
Resistance： 43.5A
Rated voltage：220V
Rated current：0.45A
Rated frequency：60HZ
Rated power：29W
Details of Measure
Check to make sure that the rated voltage is
supplied.
Check to make sure that the indoor PCB is broken
Check for insufficient gas.
Check to make sure that the required spaces for
installation (specified in the Technical Guide, etc.) are
provided.
16
Service diagnosis
Picture
Domestic air conditioner