Boiler tripping main fuse

[Derek P]

I have a grant vortex combi boiler and it has started tripping the main fuse when the programmer calls for heat.

Any ideas.

Regards

 

[Pete999]

I have a grant vortex combi boiler and it has started tripping the main fuse when the programmer calls for heat.

Any ideas.

Regards

Faulty Pump or Valve, do you have a maint contract for your boiler? if yes contact the provider.

 

[James]

My bet is on the pump

 

[Derek P]

Faulty Pump or Valve, do you have a maint contract for your boiler? if yes contact the provider.

No maint contract but will get the pump checked.

Thanks.

 

[telectrix]

I have a grant vortex combi boiler and it has started tripping the main fuse when the programmer calls for heat.

Any ideas.

Regards

main fuse or RCD?

 

[Derek P]

main fuse or RCD?

5amp fuse in the switch + MCB +RCD

 

[Vortigern]

Pobably the diverter valve leaking. So as call for heating the valve moves (screw type motorised) and the seal has gone. Maybe, just a stab in the dark there.

 

[ferg]

Is that an external oil boiler?

It's worth getting someone out to look at it either way as there are a number of things it could be. Trying to diagnose long distance is guesswork at best.

 

[Derek P]

Not external, internal.
Going to disconnect the pump from the PCB and call for heat from the programmer tomorrow, if it doesn't trip that would suggest it is a fault with the pump ??

Thanks

Regards

 

[Taylortwocities]

Anywhere that electricity and water come together is suspect. Pump, valves, even the boiler itself.