DeDietrich Innovens MCA 15, Installation And Service Manual

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7.4.8 Checking the safety valve ...................................104
7.4.9 Checking the siphon ............................................104
7.4.10 Checking the burner and cleaning the heat
exchanger ...........................................................105
7.5 Specific maintenance operations ....................106
7.5.1 Replacing the ionisation/ignition electrode ..........106
7.5.2 Cleaning the plate exchanger (domestic hot water
end) and the water filter cartridge .......................106
7.5.3 Replacing the 3-way valve ..................................109
7.5.4 Replacing the non-return valve ...........................110
7.5.5 Assembling the boiler ..........................................111
8 Troubleshooting .....................................................................................112
8.1 Messages (Code type Bxx or Mxx) ..................112
8.2 Message history ................................................114
8.3 Faults (Code type Lxx or Dxx) .........................115
8.3.1 Deletion of sensors from the memory in the
PCB .....................................................................123
8.3.2 Deleting the IOBL 3WV modules from the memory in
the PCB ..............................................................123
8.4 Failure history ...................................................124
8.5 Parameter and input/output check (mode
tests) ..................................................................125
9 Spare parts ..............................................................................................129
9.1 General ..............................................................129
9.2 Spare parts ........................................................129
9.2.1 Casing .................................................................130
9.2.2 Heat exchanger and burner ................................131
9.2.3 Fan ......................................................................132
9.2.4 Control panel .......................................................133
9.2.5 Connecting pipes (MCA 15 - MCA 25) ................134
9.2.6 Connecting pipes (MCA 25/28 MI) ......................135
9.2.7 Spare parts list ....................................................136
MCA 15 - MCA 25 MCA 25/28 MI Contents
29/04/2010 - 300022146-001-B 4