Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Disconnect connector X11 from the PCB
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Does the boiler now respond to a CH demand?
Note:
Remember if a white PCB is fitted X11 will be fitted on the middle right of the PCB instead of the bottom right as shown.
Note:
Remember if a white PCB is fitted X11 will be fitted on the middle right of the PCB instead of the bottom right as shown.
Isolate as per TOPs P4
and refit as necessary