Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Remove electrical connectors to DHW flow sensor & make safe
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
If required, reset boiler.
Is the tap still displayed?
Is the tap still displayed?
Isolate as per TOPs P4
and refit as necessary