Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove black plug from main gas valve solenoid
Measurement:
Measure resistance across the exposed connections of the solenoid operator
(test across the two smaller pins that are opposite each other).
Resistance should be approximately 5.2 kOhms.
Reconnect plug after test.
(test across the two smaller pins that are opposite each other).
Resistance should be approximately 5.2 kOhms.
Reconnect plug after test.
Isolate as per TOPs P4
and refit as necessary