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

Location:
Running from inline connector near the ignition PCB to the overheat stat then to the gas valve.
Upon completion of the fault diagnostics carry out final electrical safety tests and checks as per TOPs (C6).

Refer to ADAPT for further information.

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Phone - 722429
or Email - Diaglab@britishgas.co.uk