The other day I came home to the boiler not working. The light for the on-switch was off, but the switch was on. I checked the fuses for the house; they were all ok. It was the fuse in the switch. So I changed it (twice), and both times I changed it, it blew the moment I pressed the on-switch. I used a 3amp fuse both times, because the original fuse was 3amp, so it's not that ampage that's the problem. Any ideas?
Find the manufacturer's installation instructions and check the wiring and fuse requirement, 3 amp does not sound right. If it is then there is a short circuit somewhere in the wiring of the boiler or going to it. You will need a qualified technician to repair this problem. The boiler may still be under warranty, call the manufacturer first, you could save a ton of money.
