Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove connector from gas valve modureg
Measurement:
Test 1:
Measure the resistance between the
connections for the gas valve modureg.
Resistance should be approximately 19kΩ.
Test 2:
Measure the resistance between the top pin at
the gas valve solenoid to a suitable earth point.
Resistance should be greater than 1MΩ (or O.L).
Measure the resistance between the
connections for the gas valve modureg.
Resistance should be approximately 19kΩ.
Test 2:
Measure the resistance between the top pin at
the gas valve solenoid to a suitable earth point.
Resistance should be greater than 1MΩ (or O.L).
Isolate as per TOPs P4
and refit as necessary