Faults (Code Type Lxx Or Dxx) - DeDietrich MCA 45 User Manual

7. Troubleshooting
Code Messages
B22 BL.FLAME LOS
B25 BL.SU ERROR
M04 REVISION
M05 REVISION A
M06 REVISION B
M07 REVISION C
M20 DISGAS
FL.DRY.B XX
DAYS
FL.DRY.C XX
DAYS
FL.DRY.B+C XX
DAYS
M23 CHANGE OUTS
SENSOR
STOP N XX
7.3

Faults (Code type Lxx or Dxx)

43
Description
No flame during operation
Internal error on the SU PCB
A service is required
An A, B or C service is required
A boiler vent cycle is underway
Floor drying is active
XX DAYS = Number of days' floor
drying remaining.
The outside temperature sensor
battery is weak
The shutdown is active
XX = Number of the active
shutdown
In the event of operational failure, the control panel flashes and
displays an error message and a corresponding code.
Checking / solution
No ionization current
Check that the gas valve is fully opened
4
Contact the professional who takes care of maintenance of
4
the appliance
Contact the professional who takes care of maintenance of
4
the appliance
The date programmed for the service has been reached
If the symbol ? flashes, press key ?. The installer's contact
4
details are displayed.
Contact the professional who takes care of maintenance of
4
the appliance
The date programmed for the service has been reached
If the symbol ? flashes, press key ?. The installer's contact
4
details are displayed.
Contact the professional who takes care of maintenance of
4
the appliance
Switching the boiler on
Wait 3 minutes
4
Floor drying is underway. Heating on the circuits not concerned
is shut down.
Contact the professional who takes care of maintenance of
4
the appliance
Change the outside radio temperature sensor
A shutdown is underway. The circuits selected for this stop are
in Antifreeze mode during the period chosen.
Depending on the control panel, the message display is
different:
Control panel DIEMATIC iSystem: The code and the
4
message are displayed.
Control panel IniControl: Only the code is displayed.
4
MCA 45 - 65 - 90 - 115
06/09/2010 - 300024828-001-A