No hot water!

[JP_]

Desperately need a shower after 5 hours of removing tiles and plaster from old kitchen.
But no hot water. My son mentioned the water wasn't very warm when he had shower at 10am.

Hot water comes on 6.30-8am, 12-2pm, and 5-7pm, so should be plenty of hot water.
Increased it from 1 hour twice a day a week ago when the weather got colder, thinking cold water tank was just video. Maybe an issue started then....

But now nothing. Water isn't just warm now, but freezing.

I've put the electric immersion on, hopefully that will work.

It's as Baxi boiler.
Radiators are all hot.

Anything i could look at before calling a plumber?

I've just turned the heating off to see if that helps. Hot water tank is wrapped in insulation now.

 

[CBW]

Probably a motorised valve issue. 2 port or 3 port? System boiler or regular open vent?

 

[JohnD]

if you bleed the highest radiator in the house, does water squirt out forcefully, and without dying away?

 

[JP_]

if you bleed the highest radiator in the house, does water squirt out forcefully, and without dying away?

Would that affect hot water? In s bungalow, so all rads same level.

 

[JP_]

Probably a motorised valve issue. 2 port or 3 port? System boiler or regular open vent?

Over added photos. I think regular?

 

[JohnD]

Would that affect hot water? In s bungalow, so all rads same level.

yes.

although not so well if the cylinder is in the loft. Is there a bleed vent on the cylinder piping?

edit
yes I think there is. On the top of that stub pipe on the front. While you're up there, look in the small tank. How deep is the water, and how deep is the mud?

 

[CBW]

Can’t see a filling loop, so perhaps regular. Check the motorised valve.

 

[JP_]

Well, within an hour of immersion and heating iff, nice hot shower. Immersion off again, might see if alternating hot water and heating will solve this for now...

 

[CBW]

Well, I tried to lead a horse to water....

 

[JP_]

I appreciate your advice, but honestly don't know how to do it! If i knew what a motorized valve looked like, or whereabouts to find it, or how to check it is working, I'd take a look.

I'll get a plumber round.

 

[Mottie]

I always leave my hot water on permanently. The cost vs. timed is negligible and you can always be assured of a cylinder of hot water. It’ll only call for heat when it’s needed instead of going stone cold. BTW a 'plumber' might not be able to deal with electrical valves/heating problem etc so if you have to call someone in, call a heating engineer but personally I’d try it on permanent first.

 

[ianmcd]

Well, I tried to lead a horse to water....

but not hot water

 

[JohnD]

Try the bleeding test.

 

[Mottie]

I appreciate your advice, but honestly don't know how to do it! If i knew what a motorized valve looked like, or whereabouts to find it, or how to check it is working, I'd take a look.

I'll get a plumber round.

Might have just been a bad contact on some switch or other? When we came home from a new year holiday in Jan last year, the heating had been on very low for a week to prevent freezing. The house was cold so I turned the heating up but after 15 mins the rads were still cold. I checked in the cupboard and the system was on, the room stat was turned up but the pump wasn’t running. I switched the whole heating power supply off at the spur, waited a bit, switched back on and the pump started up again and the pipes started getting warm. Don’t know exactly what it was but it’s never done it since. Mind you, that was the last holiday we went on, all five breaks we had booked for last year we’re cancelled because of you-know-what!

Maybe you had the same problem with your hot water that I had with my heating?


https://www.diynot.com/diy/threads/...r-one-off-or-something-on-the-way-out.536352/