DeDietrich AWHP 6 MR Installation And Service Manual page 113

AWHP MIT-IN iSystem
Code Faults
D07 AUX.SENS.FAIL.
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
24/09/2012 - 300027606-001-01
Cause Description
of the
fault
SCU Auxiliary 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.
Checking / solution
Bad connection
Check whether the sensor is connected:
4
¼ See chapter: "Deletion of
sensors from the memory in the PCB",
page 114
Check the link and the connectors
4
Check that the sensor has been correctly
4
fitted
Sensor fault
Check the Ohmic value of the sensor
4
Replace the sensor if necessary
4
Bad connection
Check whether the sensor is connected:
4
¼ See chapter: "Deletion of
sensors from the memory in the PCB",
page 114
Check the link and the connectors
4
Check that the sensor has been correctly
4
fitted
Sensor fault
Check the Ohmic value of the sensor
4
Replace the sensor if necessary
4
Bad connection
Check whether the sensor is connected:
4
¼ See chapter: "Deletion of
sensors from the memory in the PCB",
page 114
Check the link and the connectors
4
Check that the sensor has been correctly
4
fitted
Sensor fault
Check the Ohmic value of the sensor
4
Replace the sensor if necessary
4
Bad connection
Check the link and the connectors
4
Boiler module failure
Change the boiler module
4
Bad connection
Check whether the sensor is connected:
4
¼ See chapter: "Deletion of
sensors from the memory in the PCB",
page 114
Check the link and the connectors
4
Check that the sensor has been correctly
4
fitted
Sensor fault
Check the Ohmic value of the sensor
4
Replace the sensor if necessary
4
8. Troubleshooting
112