Daikin FTXS20G2V1B Service Manual page 131

Troubleshooting
Troubleshooting
Check No.05
Refer to P.147
Check No.06
Refer to P.148
Check No.11
Refer to P.150
119
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 Ω?
YES
Check No.
05
Check the four way valve
switching output.
OK
Any thermistor
disconnected?
NO
Check No. 06
Check the thermistors.
OK
Check No. 11
Check the refrigerant line.
OK
YES
YES
NO
NG
YES
NG
NG
∗ Refrigerant shortage
∗ Water mixed
∗ Stop valve
SiENBE04-808_A
Correct it.
Reconnect it.
Replace the four way valve
coil.
Replace the outdoor unit
PCB.
Reconnect in position.
Replace the defective
thermistor.
Refer to the refrigerant line
check procedure.
Replace the four way valve
(defective or dust-clogged).
(R11710)
Service Diagnosis