Blocking messages heat pump
Status
message
CH water
display
Cause
CE 25
Internal error control unit
CE 26
Internal error control unit
CE 27
Internal error control unit
CE 28
Internal error control unit
CE 37
Condenser temperature sensor error (<-30 [° C], open circuit)
CE 38
Compressed gas sensor error (<-30 [° C], open circuit)
CE 40
Heat flow temperature sensor error (<-30 [° C], open circuit)
CE 41
Evaporator temperature sensor error (<-30 [° C], open circuit)
CE 42
Air flow temperature sensor error (<-30 [° C], open circuit)
CE 43
Heat mixing temperature sensor error (<-30 [° C], open circuit)
CE 44
System temperature sensor error (<-30 [° C], open circuit)
CE 45
Condenser temperature sensor error (> 90 [° C], shorted)
CE 46
Compressed gas sensor error (> 90 [° C], shorted)
CE 48
Heat flow temperature sensor error (> 90 [° C], shorted)
CE 49
Evaporator temperature sensor error (> 90 [° C], shorted)
CE 50
Air flow temperature sensor error (> 90 [° C], shorted)
CE 51
Heat mixing temperature sensor error (> 90 [° C], shorted)
CE 52
System temperature sensor error (> 90 [° C], shorted)
CC 01
This error code can only occur if the CombinAir is connected to a two-zone
system. The boiler cannot support the heat pump with the result that the
dwelling is not or insufficiently heated. This may be caused by air in the
system or it can be caused by a software error in the control unit of the heat
pump.
CC 02
Communication problem between the heat pump and gas boiler. Without
communications there will be no heat delivered because the position of the
mixing valve is unclear. Check the connection of the data cable.
CC 03
Mix temperature imbalance. This will probably be caused by air in the system.
CC 04
This code means that there is heat demand, but the CombinAir cannot transfer
the heat to the installation. This is due to the fact that (part) of the installation is
equipped with thermostatic radiator valves that are closed and that no bypass
is installed, or is not open.
Malfunction messages
A malfunction message is indicated by a flashing number or letter on the status display combined with a
locked control unit. Once the malfunction is solved, the control unit must be unlocked by pressing the reset
button once. Should the control unit fail to unlock, try again after approximately 20 seconds. Also look for the
malfunction in this order.
Code
Diagnosis
Cause
Status
display
1
Blocking occurred for longer than one hour
•
See
last blocking gas boiler (through user
program)
2
Fan defective (5 Hz deviation per minute)
•
Fan not turning
•
Fan’s electrical connection loose or improperly
connected
•
Control unit defective
3
Incorrect ionisation (flame) signal
•
Gas valve remains open
•
Control unit defective
3.
No ionisation (flame) signal during start-up
procedure
•
No gas supply
•
Gas tap closed
•
Gas valve defective
•
Gas valve’s electrical connection loose or
