Faults (Code Type Lxx Or Dxx) - DeDietrich MCA 35 User Manual

MCA 35
Code Messages
B27 BL.DHW INST
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 OUTSI.S
M30 BL.COM.MODBUS
BL.SYSTEM NETWORK Incorrect configuration of the
M31
STOP N XX
6.3

Faults (Code type Lxx or Dxx)

0 2 4 6 8
E 1
TEMP. : 68°
2
1
D
2 PCU. COM. FAIL. D27
bar
# F
% $
AUTO
J
15/06/12 - 300022163-001-01
Description
The sensor on the plate
exchanger outlet is disconnected
or short circuited
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
is defective.
No communication with the
master regulation by the network
MODBUS.
network MODBUS.
The shutdown is active
XX = Number of the active
shutdown
10 12 14 16 18 20 22 24
SUNDAY 11:45
!
 :
<
STD
C002604-B-04
Checking / solution
Contact the professional who takes care of
4
maintenance of the appliance
The date programmed for the service has been reached
If the symbol ? flashes, press key ?. The installer's
4
contact details are displayed.
Contact the professional who takes care of
4
maintenance of the appliance
The date programmed for the service has been reached
If the symbol ? flashes, press key ?. The installer's
4
contact details are displayed.
Contact the professional who takes care of
4
maintenance of 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
4
maintenance of the appliance
Change the outside radio temperature sensor.
Contact the professional who takes care of maintenance of
the appliance.
Contact the professional who takes care of maintenance of
the appliance.
A shutdown is underway. The circuits selected for this stop
are in Antifreeze mode during the period chosen.
In the event of operational failure, the control panel flashes and
displays an error message and a corresponding code.
1. Make a note of the code displayed.
The code is important for the correct and rapid diagnosis of the
type of failure and for any technical assistance that may be
needed.
2. Press the t key. If the code is displayed again, switch off the boiler
and then switch it back on.
6. Troubleshooting
34