Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect plug marked CN5 from the PCB
Measurement:
Note.
Tests so far carried out indicate the PCB has failed, the following test may reveal the reason for failure.
Measure the resistance across connections 1 (blue) and 2 (brown)
at the disconnected connector CN 5.
Resistance expected 750 - 780 ohms.
Ensure a good connection is made.
Tests so far carried out indicate the PCB has failed, the following test may reveal the reason for failure.
Measure the resistance across connections 1 (blue) and 2 (brown)
at the disconnected connector CN 5.
Resistance expected 750 - 780 ohms.
Ensure a good connection is made.
Isolate as per TOPs P4
and refit as necessary