potterton suprima 30 has went wonky!!!

[grh1980]

Need some advice on my boiler misbehaving. The hot water doesn't work unless the heating is on. We never touched anything with the controls and it just all of a sudden one morning I realised there was no hot water to do dishes. A few months back a couple of times the boiler was still running despite no heat or water being called for. I have a sinking feeling it is going to be expensive!!!

 

[picasso]

Have a look in your airing cupboard for two of these

honeywell 2 port

• picasso
• 18 Oct 2010
• 31

the one that is nearest to your hot water cylinder is not working, should not be too expensive

 

[grh1980]

THANK YOU PICASSO!! Now is this something I could do myself?

 

[picasso]

Have you checked that you have the valve/s that I posted a picture of ?

 

[grh1980]

Yes, it is right under the tank when you remove the panel.

 

[picasso]

Its fairly simple to change the valve head if your competent with electrics.

 

[grh1980]

Fairly competent Just water going everywhere I'm afraid of.

 

[Diyisfun]

You wont be touching water, its the electric motor in the metal housing.

 

[picasso]

although this video shows a three port the two port is the same principle.

http://www.youtube.com/watch?v=Yyn_fBEH90U

 

[grh1980]

Ahhh ok I thought it was the whole unit I would have to replace. Had another look and is there a chance this unit could be plastic rather than metal??

 

[xr4x4]

If its a myson (I think) yes

White top, grey base.

 

[grh1980]

This has been very helpful thank you so much. Just get concerned when it is something alien to you but good to have people to set your mind at ease.

 

[grh1980]

The valve is a drayton mid position. It looks like I can just replace the head. Can anybody clarify if that is right and how you do it??

 

[xr4x4]

Need a picture to be sure..

 

[grh1980]

I had a wee google and then a trip to b&q and the head just comes off and looks easy enough. Stupid question but I take it when the water is being called for the boiler doesn't fire because this actuator is not telling it to