Toshiba ESTIA HWS-1501CSHM3-E, Service Manual

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113
[P04] * Any of the following abnormality may occur.
Seeing the LED on the outside board can determine which abnormality occurs.
1.High pressure sensor activated.
2.Power source failure (Vdc)
3.Hi pressure protection operation
4.Case thermostat operation
<Display 1> <Display 2> [High pressure SW system error]
Power supply error (Vdc), High pressure protective operation, Case thermostat operation.
Check code
Outdoor LED
indication
Check and Action procedure
(No specific description indicates outdoor unit parts.)
Connection of connectors,
Fan IPDU, Fan motor, Wiring.
Is circuit wiring normal?
Is there no fan breakage
or coming-off?
Is service valve fully opened?
Does cooling outdoor fan
normally operate?
B Cooling operation.
B Cooling operation
C Heating operation
Doesn’t high pressure switch
operate?
Are parts of
high pressure switch normal?
Reset the power supply and
then do a trial operation according
to the season.
Is there any element
which blocks heat exchanger
of the outdoor unit?
Clogging of heat exchanger
Short circuit
Parts check
Defective Replace
Elimination of
blocking element
Check Comp. IPDU PC board
Defective Replace
Wiring check,
Correct.
Open service valve fully.
Repair defective position.
Overcharge of refrigerant/
Clogging/Pipe breakage/
Abnormal overload
YES
YES YES
YES
YES
YES
NO
NO
←
←
→
→
NO
NO
NO
NO
YES
NO
1.
2.
Are characteristics
of TC and TCJ sensor
resistance value normal?
Are connections of
connectors,capacitors
and fan motor normal?
Heating operation
Does the heating indoor fan
normally operate?
Clogging by refrigerant
overcharge/Pipe breakage/
Abnormal overload
C
Is there any element which
blocks indoor heat exchanger?
Filter clogging
Clogging of heat exchanger
Shor
3.
2.
1.
t circuit
Elimination of
blocking element
Repair
defective position.
Replace
TC or TCJ sensor.
Check indoor P.C. board
Defective Replace
YES
YES
YES
NO NO
YES
NO
NO
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