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

Location:
It may be advisable to ask the appliance owner how frequently they have to repressurise the boiler, if they have to do this on a regular basis then investigate possible causes e.g. expansion vessel pressure, passing pressure relief valve, leak within the appliance / system etc, retest boiler, click HERE if required.
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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