DE DIETRICH INNOVENS PRO MCA 45 - 65 - 90 - 115 - Manual (Page 45)

Code Messages Description Checking / solution
B18 BL.BAD PSU The PSU PCB is not recognised Wrong PSU PCB for this boiler
4 Contact the professional who takes care of maintenance of
the appliance
B19 BL.NO CONFIG The boiler has not been
configured
The PSU PCB has been changed
4
Contact the professional who takes care of maintenance of
the appliance
B21 BL. COM SU Communication error between the
PCU and SU PCBs
Bad connection
4
Contact the professional who takes care of maintenance of
the appliance
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
B26 BL.DHW. S. The DHW tank sensor is
disconnected or short circuited
4 Contact the professional who takes care of maintenance of
the appliance
B27 BL.DHW INST The sensor on the plate
exchanger outlet is disconnected
or short circuited
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 OUTSI.S The outside temperature sensor is
defective.
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.
MCA 45 - 65 - 90 - 115 7. Troubleshooting
28/08/12 - 300024828-001-01 44