Daikin FTXS09HVJU Service Manual page 135

SiUS04-904
4.14.2 15/18/24 Class
H6
Remote
Controller
Display
A compressor startup failure is detected by checking the compressor running condition through the
Method of
position detection circuit.
Malfunction
Detection
 The compressor fails to start in about 15 seconds after the compressor run command signal is
Malfunction
Decision
 Clearing condition: Continuous run for about 5 minutes (normal)
Conditions
 The system is shut down if the error occurs 16 times.
 Compressor relay cable disconnected
Supposed
 Compressor itself defective
Causes
 Outdoor unit PCB defective
 Stop valve closed
 Input voltage out of specification
Troubleshooting
Check No.29
Refer to P.152
124
sent.
Be sure to turn off the power switch before connecting or disconnecting
Caution
the connector, or parts damage may occur.
Check No. 29
Check for short-circuit.
Normal?
YES
Check the electrolytic capacitor
voltage.
DC380±30V?
YES
Electricals or
compressor harnesses
connected as specified?
YES
Turn off the power. Disconnect the
harnesses U, V and W.
Check with the inverter checker (*).
Any LED off?
NO
NO
NO
NO
YES
Troubleshooting
Replace the outdoor unit
PCB, outdoor unit fan.
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.
(R10495)
Service Diagnosis