DE DIETRICH AD281 - Manual (Page 24)

Code Faults Description Checking / solution
D03
D04 OUTL S.B FAIL.
OUTL S.C FAIL. 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.
Bad connection
Sensor fault
4 Contact the professional who takes care of
maintenance of the appliance
D05 OUTSI.S.FAIL. Outside temperature sensor fault
Remarks:
The set point of the appliance is equal to the
maximum.
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.
Bad connection
Sensor fault
4
Contact the professional who takes care of
maintenance of the appliance
D07 SYST.SENS.FAIL. System sensor fault Bad connection
Sensor fault
4 Contact the professional who takes care of
maintenance of the appliance
D09 DHW S.FAILURE Domestic hot water sensor fault
Remarks:
Heating of domestic hot water is no longer
ensured.
The load pump operates.
The load temperature of the dhw tank is the same
as the boiler.
Bad connection
Sensor fault
4
Contact the professional who takes care of
maintenance of the appliance
D12
D13 ROOM S.B FAIL.
ROOM S.C FAIL. B room temperature sensor fault
C room temperature sensor fault
Note:
The circuit concerned operates without any
influence from the room sensor.
Bad connection
Sensor fault
4
Contact the professional who takes care of
maintenance of the appliance
D14 MC COM.FAIL Break in communication between the iSystem
module and the boiler radio module
Bad connection
4
Check the link and the connectors
Boiler module failure
4 Change the boiler module
D15 ST.TANK S.FAIL Storage tank sensor fault
Note:
The hot water storage tank reheating operation is
no longer assured.
Bad connection
Sensor fault
4
Contact the professional who takes care of
maintenance of the appliance
D16 SWIM.P.B. S.FAIL
SWIM.P.C. S.FAIL Swimming pool sensor fault circuit B
Swimming pool sensor fault circuit C
Note:
Pool reheating is independent of its temperature.
Bad connection
Sensor fault
4
Contact the professional who takes care of
maintenance of the appliance
D17 DHW 2 S.FAIL Sensor fault tank 2 Bad connection
Sensor fault
4 Contact the professional who takes care of
maintenance of the appliance
D18 ST.TANK S.FAIL Solar tank sensor fault Bad connection
Sensor fault
4
Contact the professional who takes care of
maintenance of the appliance
D19 SOL.COL.S.FAIL Header sensor fault Bad connection
Sensor fault
4
Contact the professional who takes care of
maintenance of the appliance
4. Troubleshooting VM iSystem
23 17/11/2011 - 300028026-001-A