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

Location:
Boiler is in the OFF position, press the On/Off button to switch boiler back On, then continue diagnosis if required, click HERE to continue.
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