Daikin BPMK928B42, Руководство по обслуживанию

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Troubleshooting - Outdoor Unit Related Si18-201
286 Service Diagnosis
3.3.23 Integrated Input Current Stop
Outdoor Unit
Indication
L7
Method of
Malfunction
Detection Abnormality of integrated input current is detected using integrated input current detected by the
CT.
Malfunction
Decision
Conditions When the integrated input current of 31A. continued for 2.5 seconds
"
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.)
Supposed
Causes
"
Faulty compressor
"
Overcurrent due to faulty PC board
"
Incorrect detection due to faulty PC board
"
Short-circuit
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
Check No. 5
Main circuit wiring
connection check
YES
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.
When halting,
does the current stated
left flow?
(MF042)
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Measure input current with
Check No. 6
Power transistor check
Check No. 7
Power transistor output check
NO
YES
Check No. 1
Installation conditions check
YES
Check No. 2
Discharge pressure check