Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Remove the air impulse tube from the gas valve and the air box assembly
Observation:
Inspect the tube for any damage, splits, blockages etc.
Also check the points the tube attaches to ensuring they are clear.
Also check the points the tube attaches to ensuring they are clear.
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Isolate as per TOPs P4
and refit as necessary