Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Remove wires / link from external controls terminal connector and make safe
Turn selector switch back to heating & hot water
Turn selector switch back to heating & hot water
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Allow self-check to complete.
Does the boiler still fire with external controls / link disconnected?
Does the boiler still fire with external controls / link disconnected?
Isolate as per TOPs P4
and refit as necessary