Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove the lead from the gas valve
Measurement:
Measure the resistance across the terminals of the gas valve.
Resistances should be approximately as in the table below.
Resistances should be approximately as in the table below.
| Pins | Resistance in Ohms | Test 1 / pins 1-4 | 6.5 kohms |
| Test 2 / pins 1-5 | 7.4 kohms |
Isolate as per TOPs P4
and refit as necessary