Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to DC Volts 
CH Demand
Gain access to PCB (use Insulation Mat as required)
Ensure boiler is cool
Ensure boiler is cool
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Allow burner to ignite and establish.
Measure the voltage between pins 5 and 6 at CN102 on the control PCB.
Voltage should be approximately 215V DC.
Note:
Colour of wires may change but test points remain the same.
Measure the voltage between pins 5 and 6 at CN102 on the control PCB.
Voltage should be approximately 215V DC.
Note:
Colour of wires may change but test points remain the same.
Isolate as per TOPs P4
and refit as necessary