Sharp S3503CVP09FX/T Service Manual page 34

CVP09FX
The compressor doesn't
turn off.
Check the thermistor
connector.
Check the thermistor
resistance.
Check the compressor
relay.
Checking complete.
Insufficient cool air (Compressor and fan motors running)
Temperature set to high?
Air filter or heat exchanger clogged?
Unit is located to close to another heat source?
Exhaust hose is bent or expanded
unnecessarily ?
Another object obstructing exhaust
outlet?
Compressor runs discontinuously?
Variation in temperature of
discharge pipe and Suction pipe
too low?
Frost accumulation around
capillary tube outlet and/or
evaporator inlet ?
Unit Check complete
disconnecting
Connect the connector
OK
properly.
NG
Change the thermistor.
OK
NG
Change PWB ass'y.
OK
NO
Reset temperature to a lower setting
NO
Clean
NO
Move other heat source
NO
Adjust properly
NO
Remove obstruction
NO
Error light is on?
Thermister attached incorrectly?
Room temperature out of
operation range ?
Power supply voltage too low?
Check the electronical parts
Refrigerant leakage, repair or
NO
change the refrigeration cycle
Lower power current than
NO
normal?
Capillary tube blockage,
change the refrigeration cycle
Checking method for the compressor relay.
(RY1 and PWB)
Turn off the power
supply.
Measure the contact short
resistance.
open
OK
YES
YES
YES
YES
YES
YES
YES
NO
NO
Attach correctly
Remove heat source and ventilate
NO
room
NO
Unplug other appliances
YES
YES
NO
Refrigerant leakage, repair or
change the refrigeration cycle
6 – 6
NG
Refer to the manual,
[3] Funtion
11.Diagnostic program
YES
YES
YES
YES