Sharp S3503CVP09FX/T Service Manual page 31

No cooling
(Fan operate but the
compressor doesn't operate.)
under 100V
Measure the power
supply voltage at
receptacle.
Ask the power supply
company for check.
120V(over 100V)
insufficient
Is it sufficient current
capacity of power
equipment ?
Ask the power supply
Is it small wiring for power
company for check.
supply equipment ?
sufficient
Measure the current in no current
compressor circuit.
current
imperfect contact
Check the
overload relay.
OK Change the
overload relay.
Check the NG
running capacitor.
Change the running
OK
capacitor.
Measure the resistance NG
of compressor coil.
OK Change the compressor.
there is
Is there high heat
source near the unit.
there isn't Remove the high heat
source or stop.
over 43ºC
Is the indoor
temperature too high ?
under 43ºC
Avoid sun light and
ventilate well for outdoor
heat exchanger.
dirty
Check the outdoor heat
exchanger.
not dirty Clean them with steam
cleaner or another method.
can't operate
Can the compressor
operate ?
can operate Change the compressor.
Checking complete.
open
Check the
overload relay.
short
disconnecting
Is the connector
disconnecting ?
connecting
NG
Check the compressor
relay.(RY1 on PWB)
OK
NG
Check the thermistor.
OK
Checking method for the compressor relay.
(RY1 on PWB)
Turn off the
power supply.
Measure the
resistance of its coil.
OK(about +160Ω on board [20ºC])
Turn on the power
supplty as operating the
compressor.
Measure the
voltage to its coil.
OK(12V, DC)
OK
6 – 3
Change the
overload relay.
Connect properly.
Change PWB ass'y.
Change the thermistor.
NG
NG
NG
CVP09FX