Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Remove the burner door and fan assembly
Observation:
Inspect the primary heat exchanger flueways for any restrictions or blockages.
Note:
Before the combustion chamber door is refitted and the appliance left in operation the burner door gasket MUST be replaced.
Note:
Before the combustion chamber door is refitted and the appliance left in operation the burner door gasket MUST be replaced.
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 inner,covers,removed,resize.gif)
Isolate as per TOPs P4
and refit as necessary