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12.6
Error codes on the display
Display code Cause code
A01
5800
A01
5801
A01
5802
H01
5803
A01
5804
H01
5805
A01
5806
H01
5807
A01
5808
H01
5809
A01
5810
Table 16
Compress Hybrid 3400i AW – 6721861825 (2023/08)
Error text
Root cause
Info Outdoor unit
Outdoor unit control unit crash
controller
or power supply cut off.
restarted
Info Outdoor unit
Outdoor unit CAN gateway
CAN gateway
(CBI) crash or power supply
restarted
cut off.
Info No power
No power supply to the
supply at
compressor.
compressor
Alarm No power
No power supply to the
supply at
compressor (outdoor unit
compressor
locked).
Info Current
Hardware current sensor false
sensor fault
reading.
Alarm Current
Hardware current sensor false
sensor fault
reading (outdoor unit locked).
Info IPM driver pin
Hardware: control signal to
fault
IPM pin is not correct.
Alarm IPM driver
Hardware control signal to IPM
pin fault
pin is not correct (outdoor unit
locked).
Info AC input zero
AC frequency < 40 Hz or
cross error
> 70 Hz, or no AC zero cross
signal.
Alarm AC input
AC frequency < 40Hz or >
zero cross error
70Hz, or no AC zero cross
signal (outdoor unit locked).
Info Compressor
Hardware current sensor false
current sensor
reading.
fault
Corrective / measure
Information expected when switching the control unit off and on
again. No correction necessary. Otherwise, check stability of
power supply grid. If problem is recurrent and power supply is
stable, replace the ODU control unit.
Information expected when switching the control unit off and on
again. No correction necessary. Otherwise, check stability of
power supply grid. If problem is recurrent and power supply is
stable, replace the CAN gateway (CBI).
Check compressor wire and high pressure switch connections.
Check compressor wire and high pressure switch connections.
Check no obstruction to electrical box and outdoor coil air inlet.
Check compressor connection. Check compressor internal
resistances.
Check no obstruction to electrical box and outdoor coil air inlet.
Check compressor connection. Check compressor internal
resistances.
Check no obstruction to electrical box and outdoor coil air inlet.
Check compressor connection. Check compressor internal
resistances.
Check no obstruction to electrical box and outdoor coil air inlet.
Check compressor connection. Check compressor internal
resistances.
Check between all phases and PEN conductor if the input voltage
is outside the limits. If this is not the case and the problem
persists, replace the compressor drive. If voltage is high/low,
recommend the customer to fix the power supply.
Check between all phases and PEN conductor if the input voltage
is outside the limits. If this is not the case and the problem
persists, replace the compressor drive. If voltage is high/low,
recommend the customer to fix the power supply.
Check power supply lines. If no problem is detected, replace
compressor Driver.
Appendix
43
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