Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Disconnect connector X7 for outdoor sensor
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Does the boiler now operate correctly or does the fan still not pause?
Isolate as per TOPs P4
and refit as necessary