Daikin FTXS30LVJU Service Manual page 130

SiUS091133
Troubleshooting
Check No.01
Refer to P.142
Check No.13
Refer to P.145
Check No.14
Refer to P.145
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Four-way valve
coil disconnected (loose)?
NO
Harness out of
connector?
NO
Check the continuity of the four-way
valve coil and harness.
Disconnect the harness from the
connector.
Resistance
between harnesses
about 1000 ~ 2000 W?
YES
Check No.
13
Check the four-way valve
switching output.
OK
Any thermistor
disconnected?
NO
Check No. 01
Check the thermistors.
OK
Check No. 14
Check the refrigerant line.
OK
YES
YES
NO
NG
YES
NG
NG
* Refrigerant shortage
* Water mixed
* Stop valve
Troubleshooting
Correct the four-way valve
coil.
Reconnect the harness.
Replace the four-way
valve coil.
Replace the outdoor
unit PCB.
Reconnect the
thermistor(s).
Replace the defective
thermistor(s).
Refer to the refrigerant line
check procedure.
Replace the four-way valve
(defective or dust-clogged).
(R15824)
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