The boiler is refusing to start up. As soon as the electricity is turned on Relay 4 on the PCB begins buzzing like crazy. Is it a faulty relay or is there another underlying cause?
If it is simply the relay than can I repair or replace it or do I need a new PCB?
I assume it would be pretty straightforward replacing the PCB by unplugging and re-attaching the plugs (hopefully in the correct place!)
Advice would be much appreciated. Just discovered the site and quality of info is very impressive.
If it is simply the relay than can I repair or replace it or do I need a new PCB?
I assume it would be pretty straightforward replacing the PCB by unplugging and re-attaching the plugs (hopefully in the correct place!)
Advice would be much appreciated. Just discovered the site and quality of info is very impressive.