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Troubleshooting
SiBE041213E
73
Service Diagnosis
Troubleshooting
Check No.01
Refer to P.92
Check No.12
Refer to P.93
Check No.13
Refer to P.94
Check No.14
Refer to P.94
Note:
OL (Q1L) activating temperature: 120°C
OL (Q1L) recovery temperature: 95°C
(R18316)
Caution
YES
NG
∗
Discharge pipe thermistor
NO
OK
OK
NG
NG
OK
YES
NO
NG
OK
∗
Refrigerant shortage
∗
Water mixed
∗
Stop valve
Disconnect the connector [S40]
from the PCB.
Disconnect the 2 terminals of
the OL (Q1L).
Resistance
∞
Resistance
∞
Nearly 0
Ω
Nearly 0
Ω
∗
Connector [S40]
∗
2 terminals of OL (Q1L)
Insert the thermistor in
position.
Replace the discharge pipe
thermistor.
Replace the electronic
expansion valve or the coil.
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB.
Replace the four way valve
or the coil.
Replace the outdoor unit
PCB.
Discharge
pipe thermistor
disconnected?
Check No. 01
Check the thermistors.
Check No. 13
Check the four way
valve.
Check No. 14
Check the refrigerant
line.
Check No. 12
Check the electronic
expansion valve.
Replace the OL (Q1L).
Replace the OL harness.
Connect the connectors
properly.
Connectors are
properly connected?
Check
the resistance
between the 2 terminals on
the connector
[S40].
Check the
resistance between the
2 terminals of the OL
(Q1L).
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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