Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to AC Volts 
CH Demand
Gain access to PCB (use Insulation Mat as required)
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Reset appliance as necessary.
Allow burner to light and establish.
Measure the voltage between pins 2 and 3
(brown and blue wires) on X6b connector at the PCB.
Mains voltage expected.
Note:
If a white board is fitted connector is in same location but is called X6 instead of X6b.
Allow burner to light and establish.
Measure the voltage between pins 2 and 3
(brown and blue wires) on X6b connector at the PCB.
Mains voltage expected.
Note:
If a white board is fitted connector is in same location but is called X6 instead of X6b.
Isolate as per TOPs P4
and refit as necessary