Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Remove and disconnect the internal clock assembly from the boiler.
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
With the internal clock disconnected, does the boiler light for a Heating demand ?
Note:
Any external controls must be in demand.
Note:
Any external controls must be in demand.
Isolate as per TOPs P4
and refit as necessary