Hi, Have a Baxi Solo 3 PFL 3 years old, working fine but when the boiler shuts off 1 of the relays on the pcb buzzes. As soon as the boiler fires up it stops buzzing. Everything works fine and I know "if it ain't broke don't fix it" but it needs sorting. Any ideas? pcb fault or 1 of the control switches/thermostats?

Paul, July 2007

this will be the pump over-run relay, changing the pcb will cure this problem, I have had a number of these in the last year

gary.wright53@googlemail.com, July 2007