Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Disconnect wires for opentherm controls and make safe
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Does the radiator symbol now flash?
Note:
If opentherm control is fitted there should be a link between the two "ROOM STAT" connections.
Note:
If opentherm control is fitted there should be a link between the two "ROOM STAT" connections.
Isolate as per TOPs P4
and refit as necessary