Toshiba RAS-18YKH-E Service Manual page 26

[09 Other cycle error] (1)
Does compressor
operate?
YES
Does compressor
tune off halfway?
NO
Is characteristic of
NO
TC sensor resistance
value normal?
YES
• Refer to the
Replace
TC sensor.
Isn't TC sensor
YES
disconnected from
the sensing part?
NO
Correct
connection
[09 Other cycle error] (2)
NO
Is connection of
connector normal?
Modify
connection
of connector
NO
Is condenser
Replace
condenser.
NO
Is indoor fan
motor normal?
Replace
fan motor.
NO
Doesn't
YES
inner over-relay
(in compressor)
operate?
Characteristic
Is circuit wiring
diagram.
normal?
10k at 25˚C
Outdoor
P.C. board
check?
NO
Isn't filter clogged?
YES
Is characteristic of
TC sensor resistance
value normal?
normal?
Is charged amount
YES
of refrigerant normal?
YES
Is outside air
Indoor P.C. board check
Failure
Check charged amount of refrigerant.
YES
Check abnormal overload.
Trouble on compressor
NO
NO
YES
Failure
Replacement failure
of outdoor P.C. board
Normal
Indoor P.C. board check
Failure
Does indoor
fan operate?
YES
YES
NO
NO
Refer to Characteristic diagram.
10k at 25˚C
YES
NO
YES
Amount (1,45kg) charged in factory.
YES
low load?
NO
– 26 –
Wiring check/modification
Clean filter.
Replace
TC sensor.
Freeze-preventing
operation
Addition of
refrigerant
Freeze-preventing
operation
Replace
P.C. board.
Replace
compressor
Replace
P.C. board.
Replace
P.C. board.