Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Observation:

Inspect heat exchanger flue ways for restrictions or blockages.
Note:
1. Per manufacturer's instructions, upon reassembly a replacement gasket (J04-350) for the burner is required.
2. CAUTION: Flueway sump seal. Replace the sump seal every time that the Flueway to sump connection is disturbed.
(refer to Adapt for guidance)