How To Diagnose Faulty Parts - Toshiba RAS-24UKX Service Manual

9-5. How to Diagnose Faulty Parts

[09 Other cycle error] (1)
Does compressor operate?
Is compressor
turned off shortly?
Is TC sensor resistance
NO
value (10k at 25°C)
normal?
Replace TC
sensor.
Is TC sensor
YES
disconnected from
the sensing element?
Connect TC
sensor properly.
[09 Other cycle error] (2)
NO
Is connector
connected properly?
Connect
connector
properly.
NO
Is condenser normal?
Replace
condenser.
NO
Is indoor fan
motor normal?
Replace
fan motor.
NO
YES
Does inner
YES
overload relay
(in compressor)
operate?
NO
YES
Is circuit wiring
normal?
NO
NO
Does indoor fan
Are filters clogged?
YES
Is TC sensor
resistance value (10kΩ
at 25°C) normal?
Is charged amount of
YES
refrigerant normal?
YES Is outside air
Indoor P.C. board
is defective.
Check charged amount of refrigerant.
YES
NO
NO
YES
Indoor P.C. board
is defective.
operate?
YES
YES
NO
NO
YES
NO
YES
YES
low load?
NO
– 41 –
FILE NO. SVM-01010
Operation
Check item
Conceivable principle
cause
Measure
Item by symptoms
Check defective overload.
Check compressor.
Failure
Replace
compressor.
Wiring check/modification
Replace
P.C. board.
Clean filters.
Replace
TC sensor.
Anti-freezing
operation
Charge
refrigerant.
Anti-freezing
operation
Replacd
P.C. board.