Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Disconnect opentherm connections and make safe
Fit a wire link between the opentherm terminals
Fit a wire link between the opentherm terminals
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Does the boiler now respond to CH demand?
Isolate as per TOPs P4
and refit as necessary