Potterton Suprima no hot water

[eccy]

Hi all,

I am new to the forum and I have a problem with my Potterton Suprima (not sure if there is a model number or anything you may need to help), in that the central heating works perfectly, we had an issue with the hot water actuator valve, which I have since replaced thinking that this was the cause of it not heating the water up. It appears that I was wrong, because even with the new AV fitted and working as it should, we still have no hot water. I can hear it flowing through the pipes but when I come to the hot taps it is just cold water.

What could be the problem? I really need this fixing.

TIA for any help.

eccy

 

[stevetheplumber]

needs to be traced out with a multimeter to see at what point it fails if the heating works its not a boiler fault either wiring or external control

 

[eccy]

Is there a plumber on here local to Stoke-on-Trent who can come and have a look for a decent rate at all?

 

[jtsplumbing]

Have you checked the water level in the small roof tank, system may be partly out of water

 

[eccy]

It seems as full as it has always been.

 

[jtsplumbing]

Ok, then cold feed pipe from tank to where it connects to system could be blocked stopping water getting into system

 

[eccy]

How do I unblock the cold water feed?

Sorry for all the questions, I need to get this sorted.

 

[jtsplumbing]

How do I unblock the cold water feed?

Sorry for all the questions, I need to get this sorted.

Call someone in, requires cutting into pipework

 

[Millsy 82]

Have you got your programmer turned on?

Does the boiler fire up when just hot water is called for?

Do you have 1 or 2 valves in the airing cupboard (1 being a 3 port valve or 2 2 port valves)

Who changed the actuator valve? Is it correctly fitted and wired back in correctly?

 

[eccy]

Millsy, yes I have the programmer turned on, the boiler fires up and regulates the heat and the water pipes get hot (I assume signifying water being heated), there are 2 2 port valves on the system, one for heating and one for water. I changed the actuator and changed wire for wire, exactly how it was wired in originally when we moved into the house.

Would the ballcock in the F&E tank allow water through if the cold feed was blocked?

Thanks

 

[jtsplumbing]

Ball valve lets water into the tank, the pipe coming out tops up the heating system, dirt gets drawn down this pipe and blocks it, usely where it joins onto the heating pipework, you have to drain system, empty small tank and cut into the 15mm feed pipe near the bottom and clear any blockage, check that rest of feed pipe is clear, reconnect pipe use a compression or push fit fitting so you can remove it if any future problems

 

[eccy]

Cheers for that jtsplumbing, i'll give it a go and get someone to fit one of the 2 fittings. Which is the better one or both more or less the same?

 

[Ermintrude]

Undo top nut on side of cylinder. Use a few towels to collect the water as it and the air sputters out

 

[jtsplumbing]

Undo top nut on side of cylinder. Use a few towels to collect the water as it and the air sputters out

If the waters getting in.

 

[jtsplumbing]

Cheers for that jtsplumbing, i'll give it a go and get someone to fit one of the 2 fittings. Which is the better one or both more or less the same?

Depends if you can get at it with a spanner

 

[Millsy 82]

Take the actuator bead back off and manually open the valve.

 

[eccy]

OK guys, new 'issue', the there is still no hot water coming from the taps using just the boiler, but when I have the immersion heater and boiler on the water comes out warm. I have tried the washer pipe airlock trick to no avail, and cannot get hold of a spanner to release the nut on top of the immersion. The pipe coming from the top of the immersion is warm until you get about half way up, which suggests and airlock, but I cannot confirm this.

Any other suggestions or am I just going to have to fork out for a plumber for what could potentially be a simple fix?