Troubleshooting; Messages (Code Type Bxx Or Mxx) - DeDietrich Innovens MCA 15 Installation And Service Manual

8. Troubleshooting

8 Troubleshooting
8.1

Messages (Code type Bxx or Mxx)

Messages Code Description
BL.PSU ERROR B00
BL.MAX BOILER B01
BL.HEATING B02
SPEED
BL.DT OUTL RET. B07
BL.RL OPEN B08
BL.INV. L/N B09
112
In the event of failure, the control panel displays a message and a
corresponding code.
1. Make a note of the code displayed.
2. Switch the boiler off and switch back on.
3. If the code is displayed again, correct the problem by following the
The PSU PCB is incorrectly
configured
Maximum flow temperature
exceeded
The increase in flow temperature
has exceeded its maximum limit
Maximum difference between
the flow and return temperature
exceeded
The RL inlet on the PCU PCB
terminal block is open
Set the type of generator again in the menu #CONFIGURATION (Refer to the original rating plate )
The code is important for the correct and rapid diagnosis of the
type of failure and for any technical assistance that may be
needed.
The boiler starts up again automatically when the reason for the
blocking has been removed.
instructions in the table below:
Checking / solution
Parameter error on the PSU PCB
Set the type of generator again in the menu
4
#CONFIGURATION (Refer to the original rating plate)
The water flow in the installation is insufficient
Check the circulation (direction, pump, valves)
4
The water flow in the installation is insufficient
Check the circulation (direction, pump, valves)
4
Check the water pressure
4
Check the cleanliness of the heat exchanger
4
Sensor error
Check that the sensors are operating correctly
4
Check whether the boiler sensor has been correctly fitted
4
The water flow in the installation is insufficient
Check the circulation (direction, pump, valves)
4
Check the water pressure
4
Check the cleanliness of the heat exchanger
4
Sensor error
Check that the sensors are operating correctly
4
Check whether the boiler sensor has been correctly fitted
4
Parameter error
Set the type of generator again in the menu
4
#CONFIGURATION (Refer to the original rating plate)
Bad connection
Check the wiring
4
MCA 15 - MCA 25 MCA 25/28 MI
29/04/2010 - 300022146-001-B