Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Remove fan & heat exchanger adaptor
Remove sump
Remove sump
Observation:
Inspect condensing heat exchanger flueways for restrictions or blockages.
| Isolate Mains Power to appliance as per TOPs P4 |
Isolate as per TOPs P4
and refit as necessary