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Malfunction Possible cause Checks Remedial measures Major
E32 IPM current probe
Check:
Compressor current draw,
Pressure difference, high/low
pressure
- Reduce pressure difference
by raising the low pressure or
lowering the high pressure
- Replace inverter board
E33 / E34
Compressor overcurrent
protection
Check:
Compressor current draw,
Pressure difference, high/low
pressure
- Reduce pressure difference
by raising the low pressure or
lowering the high pressure
E35 Faulty input voltage
Check:
- Voltage between U&V, U&W
and V&W (380V (+-10%))
Establish stable power supply
on the supply line
- Replace inverter board
E36 Compressor start-up fault
Check:
- U/V/W connections on
compressor
- U/V/W connections on the
inverter board
- Voltage between U&V, U&W
and V&W
(380V (+-10%))
- Compressor motor windings
- Operating pressures in the
refrigerant circuit
- Renew connections
- Replace compressor
- Replace inverter board
E37 DSP communications fault - Replace inverter board
E38 PFC communications fault - Replace inverter board
E39 Supply voltage check
Check:
- Voltage on the supply line
Establish stable power supply
on the supply line
- Replace inverter board
E40 EEPROM error
Check:
Correct seating of the
EEPROM
- Correct the seating of
the EEPROM
- Replace inverter board
E41
Faulty compressor start-up
voltage
Check:
- Voltage between U&V, U&W
and V&W (380V (+-10%))
Establish stable power supply
on the supply line
- Replace inverter board
E45 PFC communications fault - Replace inverter board
E46 Fan motor 1 defective
Check:
- Fan motor operation
- Fan motor current draw
- Replace the fan motor.
E47 Fan motor 1 defective
Check:
- Fan motor operation
- Fan motor current draw
- Replace the fan motor.
EE8
Communication fault between
motherboard and inverter
board
Check:
- Connections between
motherboard and inverter
board
- Renew connections
- Replace inverter board
- Replace motherboard
E08
Communication fault between
motherboard and display
Check:
- Communications between
motherboard and display
- Renew connections
- Replace display
- Replace motherboard
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