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SiUS091601EA
Troubleshooting for Outdoor Unit
Part 6 Service Diagnosis
162
Reference
Reference
Reference
Troubleshooting
Check No.01
Check No.13
Check No.14
NG
OK
NO
OK
NG
OK
YES
NG
Correct the four way valve
coil.
Reconnect the harness.
YES
YES
YES
NO
NO
Replace the outdoor
unit PCB (main PCB).
Replace the defective
thermistor(s).
Refer to the refrigerant line
check procedure.
Replace the four way valve
(defective or dust-clogged).
Reconnect the
thermistor(s).
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
(R20405)
∗
Refrigerant shortage
∗
Water mixed
∗
Stop valve
Four way valve
coil disconnected (loose)?
Harness
disconnected?
Any thermistor
disconnected?
Check No. 01
Check the thermistors.
Check No. 14
Check the refrigerant line.
Check No. 13
Check the four way valve
switching output.
Check the continuity of the four way
valve coil and harness.
Replace the four way
valve coil.
NO
Resistance
between harnesses
about 1000 ~ 2000
Ω
?
Disconnect the harness from the
connector.
Summary of Contents for FTX-N Series
Page 18: ...SiUS091601EA 13 Part 2 Specifications 1 Specifications 14 Part 2 Specifications...
Page 198: ...Check SiUS091601EA 193 Part 6 Service Diagnosis 18 24 class R24538 1 2 3 4 Multimeter...
Page 201: ...SiUS091601EA Check Part 6 Service Diagnosis 196 18 24 class R24539 DC DC W V U...
Page 229: ...SiUS091601EA Piping Diagrams Part 8 Appendix 224 RXL15QMVJU RXL18UMVJU 3D100007 3D123368...
Page 230: ...Piping Diagrams SiUS091601EA 225 Part 8 Appendix RXL24UMVJU 3D107985A...