Hot water cylinder not heating up (when heating is on)

[Rippy]

As above, my hot water cylinder will not heat up when the heating is on. The hot water will heat up when the immersion is on.

The pipes going to the coil are both hot, even when the heating is on all day it won't heat!

Any help greatly appreciated

Thanks

 

[Ermintrude]

Air lock me old mucca. Upload picture of cylinder u need to open a pipe to let air out

 

[spanner]

Why not set the programmer call "on" for hot water or "override" time switch.

 

[happyflyer]

Air lock me old mucca. Upload picture of cylinder u need to open a pipe to let air out

Yes, send the photo or we can't sort it

 

[Rippy]

Would it be air locked even with both pipes being hot in and out of the cylinder?

@Spanner - ancient heating system with no heating controls unfortunately

 

[Ermintrude]

Conduction from ch if common return close by

 

[spanner]

If both pipes are hot. You have flow and return back to the boiler
Is there not a programmer???

 

[kay-jay]

If both pipes are hot. You have flow and return back to the boiler
Is there not a programmer???

Not necessarily. Conduction as ermi says or as op says hes been using immersion so heat transfer from cylinder is also a possible.



To the op crack the nut at top of coil and see if you can bleed it

 

[happyflyer]

Op shear nut off cylinder thinks he's undoing it and he's tighten it, please get a plumbo in and the op has not got a camera,
a photograph will tell us more than words, now quick before I go to bed.

 

[spanner]

Op shear nut off cylinder thinks he's undoing it and he's tighten it, please get a plumbo in and the op has not got a camera,
a photograph will tell us more than words, now quick before I go to bed.[/QUOTE

Do some zzdzZzzz for me as well Happyflyer.. and I'll do homework tonight mate lolz

 

[Rippy]

Sorry been trying to upload photos but I'm on my ipad. I'll try upload later

 

[Rippy]

Edit - seems to have worked

 

[happyflyer]

Now Kay do you fancy swing on that lot now.

 

[spanner]

Did the hot water work with the "central heating on" beforehand

 

[kay-jay]

Is that one of them willis heaters that the irish lads keep mentioning?

 

[Rippy]

Years ago the back boiler was taken out and it hasn't really worked since. I'll try get a photo of the pipe work in the cloak room

 

[happyflyer]

I hate guessing on UKPF its not at all prof, have you got water in the expansion tank, I won't ask any more just this
one, I would not put a spanner on any of that plumbing unless you know what you are doing, looks like there a bit of water on the floor
already. Looks like the vent tee is lower than the cylinder connection but it might be the camera angle and there is a nice little goal post
22 mm I can see there asking to get air in it.

 

[Rippy]

Unfortunately I am a plumber lads, just completely stuck on this one.

ill post a picture of the mess of pipes downstairs.

@spanner I opened the top nut on the cylinder but no air.

 

[Rippy]

Yes it's a Willis heater

 

[Dotty]

Is that one of them willis heaters that the irish lads keep mentioning?

It is Kev, yeah.

 

[tamz]

Are you saying both pipes are hot (the ones in the lh back corner) Don't go cracking nuts open unless you want a new ceiling. You'd be best to get someone in unless you know what you are doing and are confident to deal with it when it goes tts up.

 

[happyflyer]

Get some more photo to the left of the cylinder we can't see that pipe behind properly

 

[happyflyer]

Are you saying both pipes are hot (the ones in the lh back corner) Don't go cracking nuts open unless you want a new ceiling. You'd be best to get someone in unless you know what you are doing and are confident to deal with it when it goes tts up.

He's already crack one big nut Tamz

 

[Rippy]

The pipes coming up are from the boiler. The pipes to the left are going up the cylinder. The pipes that are linked are where the back boiler was taken out.

 

[tamz]

Done by someone who got a knock back from a one night stand with a plumber :lol: Get someone in that knows what they are doing