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Si10-417
Troubleshooting
Service Diagnosis
65
Trouble
shooting
Check
No.5-1
Refer to
P.155
Check No.6
Refer to
P.157
Check No.11
Refer to
P.162
(Q0353)
Four-way valve
coil disconnected
(loose)?
C
heck No.
11
Check the refrigerant
line.
Harness out of
connector?
Disconnect
the harness from
the connector.
Resistance between
harnesses about
1500
Ω
?
C
heck No.
5-1
Check the four-way valve
switching output.
Any thermistor
disconnected?
C
heck No.
6
Check the thermistors.
Check the continuity of the
four-way valve coil and
harness.
Correct.
Reconnect.
Replace the four-way
valve coil.
Replace the outdoor
unit PC board.
Reconnect in position.
Replace a defective
thermistor.
Refer to the
refrigerant line check
procedure.
Replace the four way
valve (defective or
dust-clogged).
YES
NO
NO
l
Water mixed
l
Shut-off
valve
defective
YES
YES
NO
NO
YES
Malfunctioning
Malfunctioning
Malfunctioning
Functioning
Functioning
Functioning
Caution
Be sure to turn off power switch before connect or
disconnect connector, or parts damage may be occurred.
Si10-417.fm Page 65 Wednesday, September 22, 2004 6:38 PM