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Is the EEPROM
fitted properly?
Fit EEPROM properly
Replace outdoor
component main board
No
Yes
5. Operation and Timer lights flash at 5 Hz:
EEPROM error
6. Operation light flashes at 5 HZ and Alarm light is on: IPM safety shutdown
Check the power
supply to the circuit
board. Is it working
OK?
Check the power
supply for the
outdoor component.
Is a voltage of 230
V present at the unit
power supply?
Check the
windings of the
compressor
No
Yes
Correct the power
supply to the unit.
Is the unit working
properly again?
No
Are the connections from the circuit board to
the compressor OK?
Yes
No
Correct
connections
Are the
windings of the
compressors
OK?
Yes
Replace
circuit board
No
Replace
compressor
No
Does the
unit run after
replacing the
compressor?
Check the unit's
electrical supply.
Is it properly
connected?
Yes
No
No
Connect the electrical
supply properly
Are all the circuit
board's electrical
cables properly
connected?
Yes
No
Connect all electrical
cables properly
Yes
Check the chokes on
the circuit board
Yes
Replace circuit board
Chokes have
resistance?
No
Check the fuses on
the circuit board
Circuit board fuses
OK?
No
Replace fuse or circuit
board
Replace circuit board
Yes
35
35


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