Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove the connector plugs from the gas valve and unplug connector ST9 from the right hand side of the PCB.
Measurement:
Note:
1. There are different versions of this appliance, connections to the gas valve can be 2 x purple leads or blue and purple leads.
Check harness for continuity, PCB connector ST9 to the gas valve connectors.
Check the general lead condition.
Reconnect lead after test.
1. There are different versions of this appliance, connections to the gas valve can be 2 x purple leads or blue and purple leads.
Check harness for continuity, PCB connector ST9 to the gas valve connectors.
Check the general lead condition.
Reconnect lead after test.
Isolate as per TOPs P4
and refit as necessary