Toshiba RAV-GV1601AT8P-E Service Manual page 63

Check Outdoor
code LED display
∗ There is a possibility that it is one of the following trouble.
[P04]
Confirm LED on outdoor P.C. board to judge which trouble it is. (1) high-pressure SW system trouble,
(2) power supply trouble (Vdc), (3) high-pressure protective operation, (4) case thermostat operation.
(Item without special mention Indicates part of outdoor unit.)
[High pressure SW system trouble]
Power supply trouble (Vdc), High pressure protective operation, Case thermostat operation.
Does high pressure switch
operate?
YES
Are parts of
high pressure switch normal?
YES
Is service valve fully opened?
YES
Reset the power supply and
then do a trial operation according
to the season.
B Cooling operation.
Does cooling outdoor fan
normally operate?
YES
Is there any element
which blocks heat exchanger
of the outdoor unit?
Clogging of heat exchanger
Short circuit
NO
C
Heating operation
Does the heating indoor fan
normally operate?
YES
Is there any element which
blocks indoor heat exchanger?
Filter clogging
Clogging of heat exchanger
Short circuit
NO
Clogging by refrigerant
overcharge/Pipe breakage/
Abnormal overload
[Case thermostat operation]
[Power supply trouble (Vdc)]
[High pressure protective operation]
Check and troubleshooting
NO
Is circuit wiring normal?
NO
Parts check
Trouble → Replace
NO
Open service valve fully.
B ← Cooling operation
C ← Heating operation
NO
Is there no fan breakage
or coming-off?
YES
YES
NO
YES
Elimination of
blocking element
Replace indoor P.C. board
→
Refer to [H04] column.
→
Refer to [P05] column.
→
Refer to [P20] column.
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NO
Wiring check,
Correct.
YES
Replace Comp. IPDU PC board
NO
Repair trouble position.
Connection of connectors,
Fan motor, Wiring.
Elimination of
blocking element
Overcharge of refrigerant/
Clogging/Pipe breakage/
Abnormal overload
Are connections of
NO
connectors, capacitors
and fan motor normal?
YES
Repair
trouble position.
Are connections of
NO
connectors, capacitors
and fan motor normal?
YES
Replace
TC or TCJ sensor.