Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Gain access to PCB (use Insulation Mat as required)
Disconnect connector CN2 from the Ignition Control Board

Measurement:

Test 1:Measure resistance across connector CN2 connection L1 (Grey) and connector CN2 connection L2 (White).
Open circuit resistance expected.
Test 2:Measure resistance across connector CN2 connection L1 (Grey) and connector CN2 connection L3 (Brown).
Open circuit resistance expected.
Test 3:Measure resistance across connector CN2 connection L2 (White) and connector CN2 connection L3 (Brown).
Short circuit resistance expected.