Daikin FTKS20CVMB, Service Manual

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SiENBE04-401A Troubleshooting
Service Diagnosis 121
Troubleshooting
Check No.5
Refer to P.139
Check No.6
Refer to P.140
Check No.11
Refer to P.143
Correct.
Reconnect.
Replace the four way valve
coil.
Replace the outdoor unit
PCB.
Reconnect in position.
Replace a defective
thermistor.
Refer to the refrigerant line
check procedure.
Replace the four way valve
(defective or dust-clogged).
(R3040)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Four way valve coil
disconnected (loose)?
YES
YES
NO
Functioning
NO
C heck No. 11
Check the refrigerant line.
Malfunctioning
z
Insufficient gas
z
Water mixed
z
Stop valve defective
Harness out of connector?
NO
YES
Disconnect the
harness from
the connector.
Resistance between
harnesses about
3k
Ω
±0.5k
Ω
?
Malfunctioning
Functioning
C heck No. 5
Check the four way valve
switching output.
YES
NO
Any thermistor disconnected?
Malfunctioning
Functioning
C heck No. 6
Check the thermistors.
Check the continuity of the four
way valve coil and harness.