Troubleshooting; Anti-Hunting; Messages (Code Type Bxx Or Mxx) - DeDietrich MODULENS O AFC 18 Installation And Service Manual

AFC 18 - AFC 24 - AFC 30
9

Troubleshooting

9.1

Anti-hunting

9.2

Messages (Code type Bxx or Mxx)

Code Messages
B00 BL.CRC.PSU
B01 BL.BOILER MAX
B02 BL.HEATING SPEED
09/07/2015 - 300026439-07
When the boiler is in Anti-short-cycle operating mode, the symbol ?
flashes.
1. Press the "?" key.
The message Operation assured when the restart temperature
will be reached is displayed.
In the case of failure, the control panel displays a 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. Switch the boiler off and switch back on.
The boiler starts up again automatically when the reason for the
blocking has been removed.
3. If the code is displayed again, correct the problem by following the
instructions in the table below:
Description
The PSU integrated in the
PCU is incorrectly
configured
Maximum flow temperature
exceeded
The increase in flow
temperature has exceeded
its maximum limit.
This message is not an error message but an item of
information.
Checking / solution
Parameter error on the PSU
Set the type of generator again in the menu
4
#CONFIGURATION (Refer to the original rating plate).
Then check the burner parameters
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
Sensor error
Check that the sensors are operating correctly
4
Check whether the boiler sensor has been correctly
4
fitted
9. Troubleshooting
145