Toshiba RAS-24UK-AR - 9-5. How to Diagnose Faulty Parts

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FILE NO. SVM-01010
9-5. How to Diagnose Faulty Parts
[09 Other cycle error] (1)
Does compressor operate?
YES
NO
Is compressor
turned off shortly?
YES
NO
Is TC sensor resistance
value (10k at 25°C)
normal?
YES
NO
YES
NO
YES
NO
YES
NO
Replace TC
sensor.
Is TC sensor
disconnected from
the sensing element?
Connect TC
sensor properly.
Does inner
overload relay
(in compressor)
operate?
Is circuit wiring
normal?
Check charged amount of refrigerant.
Check defective overload.
Check compressor.
Indoor P.C. board
is defective.
Replace
compressor.
Wiring check/modification
Replace
P.C. board.
Failure
Operation
Measure
Item by symptoms
Check item
Conceivable principle
cause
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
Connect
connector
properly.
Replace
condenser.
Replace
fan motor.
Is connector
connected properly?
Is condenser normal?
Is indoor fan
motor normal?
Does indoor fan
operate?
Are filters clogged?
Is TC sensor
resistance value (10kΩ
at 25°C) normal?
Is charged amount of
refrigerant normal?
Is outside air
low load?
Indoor P.C. board
is defective.
Anti-freezing
operation
Clean filters.
Replace
TC sensor.
Charge
refrigerant.
Replacd
P.C. board.
Anti-freezing
operation
[09 Other cycle error] (2)