DeDietrich AWHP-2 MIT-IN-2 iSystem User Manual page 34

6. Troubleshooting
Code Messages
B09 BL.SC.IN.OPEN
B10 BL.GROUP.EXT.
B11 BL.COM SCU
B12 BL.WATER MIS.
B13 BL.DHW. S.
B14 BL.OUTSIDE.S
B17 BL.BAD PSU
B18 BL.BAD PSU
B19 BL.NO CONFIG
B39 BL.FLOW
B40 BL.FLOW.STOP
B41 BL.COM.CPT.kWh
B50 BL.S.DEP.CPT.kWh
B51 BL.S.RET.CPT.kWh
B52 BL.CPT.kWh.ELEC1
B53 BL.CPT.kWh.ELEC2
B54 BL.CPT.kWh.THERM
B55 BL.FLOW
33
Description
The BL inlet on the PCU PCB
terminal block is open. Antifreeze
protection.
Failure outside unit.
Communication error with the
SCU PCB.
The water pressure is lower than
0,5 bar
The DHW tank sensor is
disconnected or short circuited
The outside temperature sensor is
disconnected or short circuited.
The parameters saved on the
PCU PCB are impaired.
The PSU PCB is not recognised
The inside module has not been
configured.
Low flow rate.
Flow rate fault.
Communication error with the
energy meter option PCB.
Energy meter flow sensor error.
Energy meter return sensor error. Bad connection.
Electical meter ELEC 1 error.
Electical meter ELEC 2 error.
Thermal meter error.
Low flow rate.
Checking / solution
The contact connected to the BL inlet is open.
Contact the professional who takes care of
4
maintenance of the appliance.
Parameter error.
Contact the professional who takes care of
4
maintenance of the appliance.
Bad connection.
Contact the professional who takes care of
4
maintenance of the appliance.
Contact the professional who takes care of
4
maintenance of the appliance.
Contact the professional who takes care of
4
maintenance of the appliance.
Not enough water in the circuit.
Top up the installation with water.
4
Bad connection.
Contact the professional who takes care of
4
maintenance of the appliance.
Bad connection.
Contact the professional who takes care of
4
maintenance of the appliance.
Parameter error on the PCU PCB.
Contact the professional who takes care of
4
maintenance of the appliance.
Wrong PSU PCB for this heat pump.
Contact the professional who takes care of
4
maintenance of the appliance.
The PSU PCB has been changed.
Contact the professional who takes care of
4
maintenance of the appliance.
Contact the professional who takes care of
4
maintenance of the appliance.
Contact the professional who takes care of
4
maintenance of the appliance.
Bad connection.
Contact the professional who takes care of
4
maintenance of the appliance.
Bad connection.
Contact the professional who takes care of
4
maintenance of the appliance.
Contact the professional who takes care of
4
maintenance of the appliance.
Bad connection.
Contact the professional who takes care of
4
maintenance of the appliance.
Bad connection.
Contact the professional who takes care of
4
maintenance of the appliance.
Bad connection.
Contact the professional who takes care of
4
maintenance of the appliance.
Contact the professional who takes care of
4
maintenance of the appliance.
AWHP-2 MIT-IN-2 iSystem
10/06/2015 - 7616372-001-05