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

Location:
Top up system pressure as required, 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, filling loop, leak within the appliance / system, heat exchanger leaking internally into condensate.
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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