DeDietrich Innovens MCA 25 BIC User Manual page 34

6. Troubleshooting
Code Messages
B08 BL.RL OPEN
B09 BL.INV. L/N
B10 BL.BL INPUT OPEN
B11
B13 BL. PCU COM
BL.COM PCU-D4
B14 BL.WATER MIS.
B15 BL.GAS PRESS
B16 BL.BAD SU
B17 BL.PCU ERROR
B18 BL.BAD PSU
B19 BL.NO CONFIG
B21 BL. COM SU
B22 BL.FLAME LOS
B25 BL.SU ERROR
B26 BL.DHW. S.
33
Description
The RL inlet on the PCU PCB
terminal block is open
Contact the professional who takes care of maintenance of the appliance
4
The BL inlet on the PCU PCB
terminal block is open
Communication error with the
SCU PCB
The water pressure is lower than
0,8 bar
Gas pressure too low
The SU PCB is not recognised
The parameters saved on the
PCU PCB are impaired
The PSU PCB is not recognised Wrong PSU PCB for this boiler
The boiler has not been
configured
Communication error between
the PCU and SU PCBs
No flame during operation
Internal error on the SU PCB
The DHW tank sensor is
disconnected or short circuited
Checking / solution
Parameter error
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection
Contact the professional who takes care of
4
maintenance of the appliance
The contact connected to the BL inlet is open
Contact the professional who takes care of
4
maintenance of the appliance
Parameter error
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection
Contact the professional who takes care of
4
maintenance of the appliance
SCU PCB not installed in the boiler
Contact the professional who takes care of
4
maintenance of the appliance
Not enough water in the circuit
Top up the installation with water
4
Incorrect setting of the gas pressure switch on the SCU PCB
Check that the gas valve is fully opened
4
Contact the professional who takes care of
4
maintenance of the appliance
Wrong SU PCB for this boiler
Contact the professional who takes care of
4
maintenance of the appliance
Parameter error on the PCU PCB
Contact the professional who takes care of
4
maintenance of the appliance
Contact the professional who takes care of
4
maintenance of the appliance
The PSU PCB has been changed
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection
Contact the professional who takes care of
4
maintenance of the appliance
No ionization current
Check that the gas valve is fully opened
4
Contact the professional who takes care of
4
maintenance of the appliance
Contact the professional who takes care of
4
maintenance of the appliance
Contact the professional who takes care of
4
maintenance of the appliance
MCA 25/28 BIC
15/06/12 - 300022162-001-01