Set Appliance State:
Mains Power Off
Gas Off
Set Multimeter to DC Volts 
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Apply heating demand, allow fan to start.
After 12 seconds voltage should be present at test points. Measure voltage across the black (neutral) and red(live) leads on connector 4 on the PCB.
Expected voltage approximately 200V DC.
Voltage will only be present for approximately 4 seconds during the ignition phase the appliance will try to ignite a maximum of 5 times before going to lockout.
After 12 seconds voltage should be present at test points. Measure voltage across the black (neutral) and red(live) leads on connector 4 on the PCB.
Expected voltage approximately 200V DC.
Voltage will only be present for approximately 4 seconds during the ignition phase the appliance will try to ignite a maximum of 5 times before going to lockout.
Isolate as per TOPs P4
and refit as necessary