It keeps causing my main swich board to trip. I have three seprate trip swiches in the boiler house and its down to the pump to heat the house that is causing it to trip.

justin murphy, August 2009

On the surface it appears that the water circulating pump is defective and needs to be replaced. Based on what you say,

"its down to the pump to heat the house that is causing it to trip",

I would say that the pump is the most probable cause.

Peccavi, August 2009