Fuses are blowing

[Ian Patton]

Hi can anyone help. My gravity fed boiler is blowing fuses . I have a Lawson 5amp fuse in ring main and a 3 amp one in the wall socket next to boiler. Are these correct. This problem has just started since fitting a shower to the ensuite. It's a main boiler

 

[JohnD]

you have an electrical fault. The fuses are attempting to protect your appliance. If you keep replacing the fuses without identifying and correcting the fault, you will do more and more damage.

Not being a boilerman, if it was me I would start by looking for a water leak dripping onto an electrical part, perhaps around the pump or a motorised valve if you have one, which you might be able to fix with a simple plumbing repair, or around the cylinder thermostat. As an inexperienced amateur you should not be taking a gas boiler apart. You can also look for obvious damage to the cables, such as rodents (as above) or a heavy object crushing flex.

If you insist on powering up the boiler when you already have a fault you might damage the electronics, which will be an additional expensive repair on top of whatever fault you already have.

 

[ianmcd]

you still need a gas engineer

 

[Agile]

Was it an electric shower that was fitted?

If so was it connected by a proper electrician and supplied via an RCD?

If so then I would be inclined to suggest you don't use the shower until the fault has been identified as it sounds quite bizarre and could be dangerous.

Tony