Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Remove the fan/gas valve assembly and burner from
the top of the heat exchanger
the top of the heat exchanger
Observation:
Take out the baffle (see note) from inside and, using a torch, check the
flueways of the heat exchanger are clear.
flueways of the heat exchanger are clear.
Isolate as per TOPs P4
and refit as necessary