Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Remove the electrical connector from the low pressure sensor and make safe
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
With the low pressure sensor connector
removed does the display now illuminate ?
removed does the display now illuminate ?
Isolate as per TOPs P4
and refit as necessary