RESISTANCE GAS VALVE AND HARNESS

Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Set Multimeter to Resistance

Remove connector 35 from the PCB

Measurement:

Measure for resistance across the blue and brown wires of connector 35.
Expected resistance approximately 4.4kOhms.

vm vitodens 25 kw combi j27488 pcb conns 1 .jpg

vm vitodens 25 kw combi conn 35 discon.gif

Note.
1. PCB connector numbers can be found on the plastic moulding surrounding the board.
2. Ensure a good connection is made or misdiagnosis will occur.