POTTERTON COMBI BOILER 28HE - No hot water

[Martinkeat]

Hi Guys,

I have a potterton combi 28HE and scratching my head.

CH working fine, kicking on and kicking off no problem. Hot water however is a different story. Turn the tap on and the boiler fires, the temperature goes up but the water is running cold from the tap. Any ideas?

 

[Martinkeat]

OK Something wierd - Turn the hot water tap on and it gets semi warm for about 10 secs then goes cold again.

 

[Agile]

Is your boiler designated as an "instant" model?

There have also been some different designs within your description.

Regardless, I suspect that it is a fault which is likely to require a boiler engineer to identify.

Tony

 

[Martinkeat]

Is your boiler designated as an "instant" model?

There have also been some different designs within your description.

Regardless, I suspect that it is a fault which is likely to require a boiler engineer to identify.

Tony

Not sure what you mean by instant model mate.

 

[Martinkeat]

Soonest I can get an engineer to the house is Wednesday (rural). So I am trying to find some way to get hot water going.

 

[Martinkeat]

Apparently when I put the CH on now, the hot water works. But if the CH is off, the water is cold.

 

[GuessMan]

Most likely to be the DHW microswitch, very cheap easy fix.