DeDietrich AWHP MIT-IN iSystem User Manual

Code Messages Description Checking / solution
B09 BL.BL INPUT OPEN
The BL inlet on the PCU PCB
terminal block is open. Antifreeze
protection.
The contact connected to the BL inlet is open.
4 Contact the professional who takes care of
maintenance of the appliance.
Parameter error.
4 Contact the professional who takes care of
maintenance of the appliance.
Bad connection.
4 Contact the professional who takes care of
maintenance of the appliance.
B10 BL.GROUP.EXT.
Failure outside unit.
4 Contact the professional who takes care of
maintenance of the appliance.
B11 BL.COM SCU
Communication error with the
SCU PCB.
4 Contact the professional who takes care of
maintenance of the appliance.
B12 BL.WATER MIS.
The water pressure is lower than
0,5 bar
Not enough water in the circuit.
4 Top up the installation with water.
B13 BL.DHW. S.
The DHW tank sensor is
disconnected or short circuited
Bad connection.
4 Contact the professional who takes care of
maintenance of the appliance.
B14 BL.OUTSIDE.S
The outside temperature sensor is
disconnected or short circuited.
Bad connection.
4 Contact the professional who takes care of
maintenance of the appliance.
B17 BL.PCU ERROR
The parameters saved on the
PCU PCB are impaired.
Parameter error on the PCU PCB.
4 Contact the professional who takes care of
maintenance of the appliance.
B18 BL.BAD PSU
The PSU PCB is not recognised Wrong PSU PCB for this heat pump.
4 Contact the professional who takes care of
maintenance of the appliance.
B19 BL.NO CONFIG
The inside module has not been
configured.
The PSU PCB has been changed.
4 Contact the professional who takes care of
maintenance of the appliance.
B39 BL.FLOW
Low flow rate.
4 Contact the professional who takes care of
maintenance of the appliance.
B40 BL.FLOW.STOP
Flow rate fault.
4 Contact the professional who takes care of
maintenance of the appliance.
M04 REVISION
A service is required. The date programmed for the service has been reached.
4 Service the heat pump.
4 To clear the inspection, programme another date in the
menu #REVISION or set the parameter REVISION
TYPE to OFF.
M05
REVISION A
An A, B or C service is required. The date programmed for the service has been reached.
4 Service the heat pump.
4 To clear the inspection, press key t.
M06 REVISION B
M07 REVISION C
FL.DRY.B XX DAYS
Floor drying is active.
XX DAYS = Number of days' floor
drying remaining.
Floor drying is underway. Heating on the circuits not
concerned is shut down.
4 Wait for the number of days shown to change to 0.
4 Set the parameter SCREED DRYING to OFF.
FL.DRY.C XX DAYS
FL.DRY.B+C XX
DAYS
M23 CHANGE OUTSI.S
The outside temperature sensor is
defective.
Change the outside radio temperature sensor.
STOP N XX
The shutdown is active.
XX = Number of the active
shutdown.
A shutdown is underway. The circuits selected for this stop
are in Antifreeze mode during the period chosen.
4 Wait until the end date has been passed.
4 Set the parameter STOP N XX to OFF.
AWHP MIT-IN iSystem 5. Troubleshooting
06/09/2012 - 300027618-001-01
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DeDietrich AWHP MIT-IN iSystem Specifications

General

Brand	DeDietrich
Model	AWHP MIT-IN iSystem
Category	Heat Pump
Language	English