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SiBE041401E
Troubleshooting
Service Diagnosis
74
Troubleshooting
Check No.01
Refer to P.93
Check No.12
Refer to P.94
Check No.13
Refer to P.95
Check No.14
Refer to P.95
Note:
OL (Q1L) activating temperature: 120°C
OL (Q1L) recovery temperature: 95°C
(R19528)
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.
Summary of Contents for FTXG20LV1BW
Page 12: ...SiBE041401E 1 List of Functions Part 1 List of Functions 1 Functions 2...
Page 14: ...SiBE041401E 3 Specifications Part 2 Specifications 1 Specifications 4...
Page 60: ...SiBE041401E 49 Remote Controller Part 5 Remote Controller 1 Remote controller 50...
Page 113: ...SiBE041401E Check Service Diagnosis 102 50 class Diode bridge R19944...
Page 127: ...Revision History Month Year Version Revised contents 03 2014 SiBE041401E First edition...