Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Remove connector BUS from the PCB
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
With the BUS external controls disconnected does the boiler respond to a CH demand?
(Box appears around radiator symbol and temperature is displayed)
Note.
Ensure the wire link fitted at TA1 connector is left in place.
(Box appears around radiator symbol and temperature is displayed)
Note.
Ensure the wire link fitted at TA1 connector is left in place.
Isolate as per TOPs P4
and refit as necessary