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[8-14 4250 Troubleshooting ]
8-14 4250 Troubleshooting
1. 4250 Troubleshooting flowchart
Check the outdoor unit for
proper operation.
Unit operation
In operation
Acquisition of error history
and pre-error data
(Reference materials)
Service
Handbook
Service
Handbook
Items to be
checked
74
- chapter 8
Stopped abnormally
Restart the unit.
Is the unit operable?
Yes
Inverter board
Normal
Compressor insulation
Normal
Check the items on the
check list.
Problems
were found with (an)
item(s) on the list.
No
No
Abnormal
Refrigerant flood-back
may have occurred.
Abnormal
Energize the unit to
evaporate the refrigerant.
Re-check the
compressor insulation.
Normal
Yes
Action
Replace the
circuit board.
Abnormal
Replace the
compressor.
Correct any
problem found.
Consult the
relevant factory
personnel.
BS_08_M
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Chapters
Troubleshooting
