DeDietrich AWHP 6 MR Installation And Service Manual page 110

8. Troubleshooting
Code Messages
B09 BL.BL INPUT OPEN
B10 BL.GROUP.EXT.
B11 BL.COM SCU
B12 BL.WATER MIS.
B13 BL.DHW. S.
B14 BL.OUTSIDE.S
B17 BL.PCU ERROR
B18 BL.BAD PSU
B19 BL.NO CONFIG
B39 BL.FLOW
B40 BL.FLOW.STOP
M04 REVISION
M05 REVISION A
M06 REVISION B
M07 REVISION C
109
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 Wrong PSU PCB for this heat pump.
The inside module has not been
configured.
Low flow rate.
Flow rate fault.
A service is required.
An A, B or C service is required. The date programmed for the service has been reached.
Checking / solution
The contact connected to the BL inlet is open.
Check the contact on the BL inlet.
4
Parameter error.
Check the parameter E. BL
4
Bad connection.
Check the wiring.
4
Consult the error codes specific to the outdoor module.
4
Bad connection
Check the wiring
4
PCB SCU not installed in the equipment
Install an SCU PCB
4
Not enough water in the circuit.
Top up the installation with water.
4
Check that the sensor is actually connected to the
4
S.ECS inlet on the PCU
Check the wiring
4
Check the Ohmic value of the sensor. Replace it if
4
necessary
¼ "Sensor characteristics", page 15
See:
Check that the sensor is actually connected to the
4
S.EXT inlet on the PCU
Check the wiring
4
Check the Ohmic value of the sensor. Replace it if
4
necessary
¼ "Sensor characteristics", page 15
See:
Parameter error on the PCU PCB.
Replace the PCU PCB.
4
Replace the PSU PCB.
4
The PCU PCB has been changed.
Set the type of generator again in the menu
4
#CONFIGURATION (Refer to the original rating plate).
Check the settings of the heating pump on the heat pump.
4
Check that the filter is not blocked.
4
Check the settings of the heating pump on the heat pump.
4
Check that the filter is not blocked.
4
The date programmed for the service has been reached.
Service the heat pump.
4
To clear the inspection, programme another date in the
4
menu #REVISION or set the parameter REVISION
TYPE to OFF.
Service the heat pump.
4
To clear the inspection, press key t.
4
AWHP MIT-IN iSystem
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24/09/2012 - 300027606-001-01