RESISTANCE GAS VALVE HARNESS FOR FUSE INVESTIGATION

Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Set Multimeter to Resistance

Remove connector CN3 from the PCB
Remove the electrical connector from the gas valve

Measurement:

Test 1.
Measure the resistance between pin 3 (brown)
and pin 4 (blue) on connector CN3.
Test 2.
Measure the resistance between pin 3 (brown) on
connector CN3 and a suitable earth connector.
Expected resistance greater than 1 MOhm for each test.
A reading of O.L is acceptable as this is greater than 1 MOhm.

Note.
On some PCB's the connector will be labelled as CN22 not CN3 and its orientation will differ, however the test points and expected results remain the same.