DeDietrich MCA 15 User Manual page 35

MCA 15 - MCA 25 MCA 25/28 MI
Code Faults
L00 PSU FAIL
L01 PSU PARAM FAIL
L02 DEF.OUTLET S.
L03 DEF.OUTLET S.
L04 DEF.OUTLET S.
L05 STB OUTLET
L06 BACK S.FAILURE
L07 BACK S.FAILURE
L08 BACK S.FAILURE
23/08/2011 - 300024159-001-B
Cause Description
of the
fault
PCU PSU PCB not connected
PCU The safety parameters are incorrect Bad connection
PCU The boiler flow sensor has short-
circuited
PCU The boiler flow sensor is on an open
circuit
PCU Boiler temp too low
PCU Boiler temperature too high
PCU The return temperature sensor has
short-circuited
PCU The return temperature sensor is on
an open circuit
PCU Return temperature too low
Checking / solution
Bad connection
PSU PCB faulty
Contact the professional who takes care of
4
maintenance of the appliance
PSU PCB faulty
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection
Sensor fault
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection
Sensor fault
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection
Sensor fault
Contact the professional who takes care of
4
maintenance of the appliance
No water circulation
Vent the air in the heating system
4
Check the circulation (direction, pump,
4
valves)
Check the water pressure
4
Bad connection
Sensor fault
Contact the professional who takes care of
4
maintenance of the appliance
No water circulation
Vent the air in the heating system
4
Check the circulation (direction, pump,
4
valves)
Check the water pressure
4
Bad connection
Sensor fault
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection
Sensor fault
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection
Sensor fault
Contact the professional who takes care of
4
maintenance of the appliance
No water circulation
Vent the air in the heating system
4
Check the circulation (direction, pump,
4
valves)
Check the water pressure
4
6. Troubleshooting
34