Daikin FTX25JVEA9 Service Manual page 299

Troubleshooting - Outdoor Unit Related
3.3.23 Integrated Input Current Stop
L7
Outdoor Unit
Indication
Method of Abnormality of integrated input current is detected using integrated input current detected by the
CT.
Malfunction
Detection
Malfunction When the integrated input current of 31A. continued for 2.5 seconds
Decision
"
Conditions
"
Supposed
"
Causes
"
"
Troubleshooting
Check No.5
Refer to P.302
Check No.6
Refer to P.303
Check No.7
Refer to P.304
Check No.1
Refer to P.300
Check No.2
Refer to P.300
286
When an integrated input error is generated 4 times, the system shuts down.
(The 4-time counter resets itself when no outdoor unit abnormality occurs within 60-minute
cumulative time after the error generation.)
Faulty compressor
Overcurrent due to faulty PC board
Incorrect detection due to faulty PC board
Short-circuit
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check No. 5
Main circuit wiring
connection check
Measure input current with
When halting,
does the current stated
left flow?
YES
Check No. 6
Power transistor check
Check No. 7
Power transistor output check
YES
Check No. 1
Installation conditions check
YES
Check No. 2
Discharge pressure check
NO
NO
Si18-201
Replace control PC board,
filter PC board
Apply required remedy
subject to the case.
Apply required remedy
subject to the case.
Apply required remedy
subject to the case.
Service Diagnosis
(MF042)