DeDietrich AWHP-2 MIT-IN-2 iSystem User Manual page 36

6. Troubleshooting
Code Faults
D03 OUTL S.B FAIL.
D04 OUTL S.C FAIL.
D05 OUTSI.S.FAIL.
SYST.SENS.FAIL. SCU
D07
D09 DHW S.FAILURE
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.B S.FAIL
D16 SWIM.C S.FAIL
D17 DHW 2 S.FAIL
D18 ST.TANK S.FAIL
35
Cause Description
of the
fault
SCU Circuit B flow sensor fault
Circuit C flow sensor fault
Remarks:
The circuit pump is running.
The 3-way valve motor on the circuit is no
longer powered and can be adjusted
manually.
SCU Outside temperature sensor fault
Remarks:
The set point is equal to the MAX MIT
parameter.
The valve setting is no longer ensured but
monitoring the maximum temperature of the
circuit after the valve is ensured.
Valves may be manually operated.
Reheating the domestic hot water remains
ensured.
System sensor fault
SCU Domestic hot water sensor fault
Remarks:
Heating of domestic hot water is no longer
ensured.
The load pump operates.
The tank load temperature is equal to the
temperature of the inside module.
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
AWHP-2 MIT-IN-2 iSystem
Checking / solution
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
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
10/06/2015 - 7616372-001-05