Adjust, Service, Repair or Replace as necessary
Isolate Mains Power to appliance as per TOPs P4
Isolate Water and Gas as appropriate

Location:
Screwed into main heat exchanger below burner to right of fan venturi.
Upon completion of the fault diagnostics carry out final electrical safety tests and checks as per TOPs (C6).
Part Number: H78-180


Refer to ADAPT for further information.

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