Sharp CV-P09LX Service Manual page 29

The compressor doesn't
turn off.
disconnecting
Check the thermistor
connector.
Connect the connector
OK
properly.
NG
Check the thermistor
resistance.
OK Change the thermistor.
Check the compressor NG
relay.
Change PWB ass'y.
OK
Checking complete.
Insufficient cool air (Compressor and fan motors running)
Temperature set to high?
NO
Air filter or heat exchanger clogged?
NO
Unit is located to close to another heat source?
NO
Exhaust hose is bent or expanded
unnecessarily ?
NO
Another object obstructing exhaust
outlet?
NO
Compressor runs discontinuously?
NO
Variation in temperature of
discharge pipe and Suction pipe
too low?
NO
Frost accumulation around
capillary tube outlet and/or
evaporator inlet ?
NO
Unit Check complete
Checking method for the compressor relay.
(RY1 and PWB)
Turn off the power
supply.
Measure the contact
resistance.
open
OK
YES
Reset temperature to a lower setting
YES
Clean
YES
Move other heat source
YES
Adjust properly
YES
Remove obstruction
YES
Error light is on?
NO
Thermister attached incorrectly?
NO
Room temperature out of
operation range ?
NO
Power supply voltage too low?
NO
Check the electronical parts
YES
Refrigerant leakage, repair or
change the refrigeration cycle
YES
Lower power current than
normal?
NO
Capillary tube blockage,
change the refrigeration cycle
5 – 6
short
NG
Refer to the manual,
YES
[3] Funtion
11.Diagnostic program
YES
Attach correctly
YES
Remove heat source and ventilate
room
YES
Unplug other appliances
YES
Refrigerant leakage, repair or
change the refrigeration cycle
CVP09LX