Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Disconnect lead from gas valve
Measurement:
Test 1:
Measure the resistance between the two outer pins on the gas valve.
Resistance should be approximately 7.9kOhms.
Test 2:
Measure the resistance between the top pin
on the gas valve and a suitable earth point.
Resistance should be above 1M Ohm..
Measure the resistance between the two outer pins on the gas valve.
Resistance should be approximately 7.9kOhms.
Test 2:
Measure the resistance between the top pin
on the gas valve and a suitable earth point.
Resistance should be above 1M Ohm..
Isolate as per TOPs P4
and refit as necessary