Service manual

Troubleshooting SiEBE12-625
220 Service Diagnosis
Troubleshooting
Check No.05
Refer to P.241
Check No.06
Refer to P.242
Check No.11
Refer to P.245
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).
(R4717)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Four-way valve coil
disconnected (loose)?
YES
YES
NO
Functioning
NO
Check No. 11
Check the refrigerant line.
Malfunctioning
 Water mixed
 Shut-off valve defective
Harness out of connector?
NO
YES
Disconnect
the harness from the
connector. Resistance between
harnessesabout
1500 ohms?
Malfunctioning
Functioning
Check No. 05
Check the four-way valve
switching output.
YES
NO
Any thermistor disconnected?
Malfunctioning
Functioning
Check No. 06
Check the thermistors.
Check the continuity of the
four-way valve coil and harness.