Boiler help needed

[laracroft2001]

Hello

Just moved into a new house and there is boiling water pissing out the overflow pipe at the side of the house.

Heating not on,have had hot water on

Have heating engineer neighbour coming on saturday but can anyone help???

Its an immersion boiler

Turn all heat/power sources off.

Did that... Then what?!

Released pressure in boiler, emptied tank and had it refilled so there was an air gap thing.. But done it again..

when you say an immersion boiler, I think you mean a hot water cylinder that is heated by an electric immersion heater and not by a gas boiler.

What colour is it? (this is not a joke)

Hi Piglet John

Yes you are correct. What i meant is its not a combi boiler

It is white/cream. A megaflow heatrae sadia if that means anything!?

it needs to be serviced by a person who is qualified in unvented cylinders (not all are).

The Megaflo is an excellent product, fairly simple and very reliable unless neglected. It has various safety devices to prevent it going over pressure, so it ought to be inspected annually, for example when you have your boiler serviced. Unqualified repairs or alterations might make it less safe.

It might be that your pressure release valve has failed, or the immersion heater thermostat is allowing it to overheat, or the expansion vessel is faulty.

If hot water is squirting down the side of your building, you are wasting money and energy heating it, so turn off the heater; and you will be damaging your building, by making the wall wet, so turn off the water. You will have to use a kettle until it is fixed.

Thanks ????