Set Appliance State:
Mains Power Off
Set Multimeter to DC Volts 
Gas On
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure voltage between blue (7) on connector X401 and earth as power reinstated.
Expect approximately 17Vdc for the first 5 seconds after the boiler is powered on.
Is the voltage measured as expected?
Note:
If fused spur is not located near appliance selector switch can be used to turn appliance on and off.
Expect approximately 17Vdc for the first 5 seconds after the boiler is powered on.
Is the voltage measured as expected?
Note:
If fused spur is not located near appliance selector switch can be used to turn appliance on and off.
Isolate as per TOPs P4
and refit as necessary