Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Disconnect X7 from the PCB
Disconnect / unclip the flame sense lead from the safety sensor
Disconnect / unclip the flame sense lead from the safety sensor
Measurement:
Measure the resistance between the disconnected lead and the black wire marked GND on X7.
Short circuit expected.
Short circuit expected.

Isolate as per TOPs P4
and refit as necessary