DeDietrich MCA 45 - Faults (Code Type Lxx or DXX)

Code Messages Description Checking / solution
B22 BL.FLAME LOS
No flame during operation No ionization current
4 Check that the gas valve is fully opened
4 Contact the professional who takes care of maintenance of
the appliance
B25
BL.SU ERROR
Internal error on the SU PCB
4 Contact the professional who takes care of maintenance of
the appliance
M04 REVISION
A service is required The date programmed for the service has been reached
4 If the symbol ? flashes, press key ?. The installer's contact
details are displayed.
4 Contact the professional who takes care of maintenance of
the appliance
M05 REVISION A
An A, B or C service is required The date programmed for the service has been reached
4 If the symbol ? flashes, press key ?. The installer's contact
details are displayed.
4 Contact the professional who takes care of maintenance of
the appliance
M06
REVISION B
M07 REVISION C
M20 DISGAS
A boiler vent cycle is underway Switching the boiler on
4 Wait 3 minutes
FL.DRY.B XX
DAYS
Floor drying is active
XX DAYS = Number of days' floor
drying remaining.
Floor drying is underway. Heating on the circuits not concerned
is shut down.
4 Contact the professional who takes care of maintenance of
the appliance
FL.DRY.C XX
DAYS
FL.DRY.B+C XX
DAYS
M23 CHANGE OUTS
SENSOR
The outside temperature sensor
battery is weak
Change the outside radio temperature sensor
STOP N XX
The shutdown is active
XX = Number of the active
shutdown
A shutdown is underway. The circuits selected for this stop are
in Antifreeze mode during the period chosen.
7.3 Faults (Code type Lxx or Dxx)
In the event of operational failure, the control panel flashes and
displays an error message and a corresponding code.
Depending on the control panel, the message display is
different:
4 Control panel DIEMATIC iSystem: The code and the
message are displayed.
4 Control panel IniControl: Only the code is displayed.
7. Troubleshooting MCA 45 - 65 - 90 - 115
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06/09/2010 - 300024828-001-A