Boiler keeps tripping main fuse

[SimonG]

Not a burner problem if hot water is ok mate

I'm in daft mode, note to self, read the original post properly

 

[Aquarius]

Not water is fine, just the heating.

Thanks

Regards

Any motorised zone valves?

 

[SJB060685]

You could do with an engineer to run some tests.
I personally would disconnect and make safe the live, neutral and earth to pump and then bring on at programmer again to rule in or out the pump.
If its not the pump then somewhere inside the control panel is the fault, providing of course you only have one heating zone and not multiple as mentioned above.
You really need an engineer to do all this for you.

 

[Murdoch]

No water leaking.

Trips when demand for heating comes on from the programmer.

Nothing has changed, just started doing it today

Murdoch, what do you mean by ATM, if you mean at the moment the answer is no the heating is switched off, the domestic hot water is on and running fine, it happens when i switch the heating to on then it trips.

Thanks

Regards

what type of controller do you have?

 

[Nelder]

I have a grant vortex combi and it keeps tripping the main fuse when the programmer calls for heating.
This has just started, it was working fine before.

Anybody got any thoughts

What fuse is it tripping?

Is it the fuse in the fused connection unit or the MCB (or is it the RCD) in the consumer unit?

 

[Derek P]

Success i think, i disconnected the pump and turned the programmer on and it didn't trip.
Will post again after i get a new one fitted.

Thanks for your help.
[automerge]1596718140[/automerge]
Problem solved, when we went to remove the pump the pump cable was jammed between the front of the flame box and flame box casing, when we took the front off the cable was fried.

Put a new cable in and it's all working now.

Thanks for all your help

Regards