Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Disconnect outdoor sensor from connector X6 on the PCB and make safe
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Does the fault code - outdoor sensor still flash?
Isolate as per TOPs P4
and refit as necessary