Toshiba RAS-24UKX Service Manual page 47

9-6-4. Compressor does not operate.
<Primary check>
(1) Is the preset temperature higher than the room temperature in cooling operation?
(2) Is the crossover cable connected properly?
<Inspection procedure>
Turn on power supply.
NO
Does OPERATION
lamp blink?
YES
Does miniature relay RY04
switch on and off due to
temperature changes?
YES
Is it possible to detect
AC 220 – 240V between 2
and 3 on terminal block?
YES
Are all of compressor
cords normal?
YES
Is compressor motor winding
normal? (Check winding resistor.)
YES
Is capacitor for
compressor normal?
YES
Is overload relay normal?
YES
Does compressor start?
YES
Does compressor stop
after a while?
YES
Is gas quantity normal?
(Check gas pressure.)
YES
Compressor is defective.
YES
Replace P.C. board.
Is resistance value of thermo
NO
sensor (TA) and heat ex-
changer sensor (TC) normal?
YES
Microcomputer is
defective.
NO
Miniature relay RY04
is defective.
NO
NO
Compressor is defective.
NO
Capacitor is defective.
NO
Overload relay is defective.
NO
Compressor is defective.
NO
Gas shortage (Gas leak)
Thermo sensor or
NO
heat exchanger
sensor is defective.
– 46 –
FILE NO. SVM-01010
Refer to 9-6-1 "Power
can not be turned on".
Replace thermo sensor
or heat exchanger
sensor.
Replace P.C. board.
Rewire or replace
defective cords.
Replace compressor.
Replace capacitor.
Replace overload relay.
Replace compressor.
Supply gas.