Kemper KHS CoolFlow 618 01 001 Manuel D'utilisation page 77

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