No Heating From Baxi WM 511 RS CHB

[wdragna]

Hi, I bled 3 rads last night as they were stone cold and they filled up ok and heated for about 30mins. I checked them later and all the rads in the house were cold. I felt the pump and it was hot and the pipe coming out of it is for for about 3 inches then its cold.
We are still getting hot water but the house is freezing. Someone at work said that the air pressure may have dropped and that I've got air in the pipes.
Can anyone please tell me where to check the pressure and if they have any idea how to get the heating back on.
cheers.

 

[meldrew's_mate]

...Someone at work said that the air pressure may have dropped and that I've got air in the pipes...

And the air pressure at my house dropped by 20mB today but I didn't get any in my pipes, all that happened was it rained a bit outside. What does your workmate suggest you do if the air pressure rises?

Seriously though, it sounds as if the pump has failed, and your hot water is probably circulating on gravity. Have the pump checked/ changed (but NOT by a workmate )

 

[gas4you]

Is this a fully pumped system or gravity primary system? If gravity then I would suspect the pump has packed up, hence why it is feeling very hot!

 

[wdragna]

lol, cheers. but it just seems funny that the pump failed 30 mins are I bled the rads when it'd been running ok before.

 

[gas4you]

When you bleed the upstairs rads do you get water out or nothing?

 

[wdragna]

I will check when I get home, if I get water out is that better and it mean its only an airlock?

 

[gas4you]

if you don't get water out then it points to a blockage in the cold fill and the pump my be running dry, therefore getting very hot!

 

[wdragna]

well I do know that the pump is hot, should I turn the heating off until I find the blockage?

 

[gas4you]

Don't forget that I am assuming it could be a blockage. Without being there we can only give general pointers! if in doubt turn it off to prevent further damage