Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Place a wire link between the 2 leftmost connections at the main terminal strip labelled "ROOM STAT / TIMER"
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Does the boiler now fire on a heating demand ?
