DeDietrich AWHP MIT-IN iSystem User Manual page 27

AWHP MIT-IN iSystem
Code Faults
D11 ROOM S.A FAIL.
D12 ROOM S.B FAIL.
D13 ROOM S.C FAIL.
D14 MC COM.FAIL
D15 ST.TANK S.FAIL
D16 SWIM.P.B. S.FAIL
D16 SWIM.P.C. S.FAIL
D17 DHW 2 S.FAIL
D18 ST.TANK S.FAIL
D19 SOL.COL.S.FAIL
D20 SOL COM.FAIL
D27 PCU COM. FAIL
D32 5 RESET:ON/OFF
D37 TA-S SHORT-CIR
06/09/2012 - 300027618-001-01
Cause Description
of the
fault
SCU A room temperature sensor fault
B room temperature sensor fault
C room temperature sensor fault
Note:
The circuit concerned operates without any
influence from the room sensor.
SCU Break in communication between the SCU
PCB and the radio module
SCU Storage tank sensor fault
Note:
The hot water storage tank reheating
operation is no longer assured.
SCU Swimming pool sensor fault circuit B
Swimming pool sensor fault circuit C
Note:
Swimming pool reheating is always done
during the circuit's comfort period.
SCU Sensor fault tank 2
SCU Solar tank sensor fault
SCU Header sensor fault
SCU Interruption in communication between the SCU PCB and the solar control system
Contact the professional who takes care of maintenance of the appliance
4
SCU Communication failure between the SCU and PCU PCBs
Contact the professional who takes care of maintenance of the appliance
4
SCU 5 resets done in less than an hour
Switch off heat pump and start up again
4
SCU The Titan Active System® is short-circuited
Check that the connection cable between the SCU PCB and the anode is not short-
4
circuited
Check that the anode is not short-circuited
4
Remarks:
Domestic hot water production has stopped but can nonetheless be restarted using key
r.
The tank is no longer protected.
If a tank without Titan Active System® is connected to the heat pump, check that the
TAS simulation connector (delivered in package AD212) is fitted to the sensor board.
5. Troubleshooting
Checking / solution
Bad connection
Sensor fault
Contact the professional who takes
4
care of maintenance of the appliance
Bad connection
Check the link and the connectors
4
Boiler module failure
Change the boiler module
4
Bad connection
Sensor fault
Contact the professional who takes
4
care of maintenance of the appliance
Bad connection
Sensor fault
Contact the professional who takes
4
care of maintenance of the appliance
Bad connection
Sensor fault
Contact the professional who takes
4
care of maintenance of the appliance
Bad connection
Sensor fault
Contact the professional who takes
4
care of maintenance of the appliance
Bad connection
Sensor fault
Contact the professional who takes
4
care of maintenance of the appliance
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