Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Observation:
Remove the Air Pressure Switch Tube and inspect the air flow Damper, located inside, for obstructions and general condition. Damper is located at the Pressure Switch end of the tube.
Replace tube after the test.
Replace tube after the test.
Isolate as per TOPs P4
and refit as necessary