Daikin FVKS25BVMB, Service Manual

Page: 113 / 184

Troubleshooting SiBE06-514A
104 Service Diagnosis
4.18 Position Sensor Abnormality
Remote
Controller
Display
H6
Method of
Malfunction
Detection A compressor startup failure is detected by checking the compressor running condition through
the position detection circuit.
Malfunction
Decision
Conditions
„
The compressor fails to start in about 15 seconds after the compressor run command signal
is sent.
„
Clearing condition: Continuous run for about 10 minutes (normal)
„
The system will be shut down if the error occurs 16 times.
Supposed
Causes
„
Compressor relay cable disconnected
„
Compressor itself defective
„
Outdoor unit PCB defective
„
Stop valve closed
„
Input voltage out of specification
Troubleshooting
Check No.13
Refer to P.123
Replace the outdoor unit
PCB.
Replace the outdoor unit
PCB.
Reconnect as specified.
∗
Inverter checker
Part No.: 1225477
Correct the power supply or
replace the outdoor unit
PCB.
Replace the compressor.
(R3041)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Normal
NO
NO
NO
YES
YES
NO
YES
YES
Any LED off?
DC290~380V?
Electricals
or compressor harnesses
connected as
specified?
Check the electrolytic capacitor
voltage.
Check with the inverter checker (
∗
).
Turn off the power. Disconnect the
harnesses U, V and W.
C heck No. 13
Check for short-circuit.