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J

Jim20

Hi, I am probably your worst knightmare, I DIYER with little knowlege, trying to do things himself.

The problem that I have is that I none of my radiators to the downstairs are working.

I have been fitting out a new bathroom, repositioned bath, sink and toilet, all successfully.
The weekend just gone, I partially drained the cental heating system, and T-ed into the hot and cold rad feed for my towel warmer and under floor heating. The underfloor heating is not in yet.

As I am a bit tight and had not long cleaned and added Inhubator to the sytem, I had collected the water, and poured it back into the expansion tank. Bleed the radiators, but found that the downstairs radiators were still cold. The towel warmer was working fine.

I have since tried turning off the working radiators to force the cold ones into life - no luck
I have checked the pump, athough a little noisey currently, was spinning freely, and I jabbed my screwdriver in, and was able to stop it on the slow setting. I assume fine.
I have now fully drained the system, (collected) and refilled (poured back into the expansion tank), bleed radiators, starting at the ground floor, furthest away, only to find that I have now lost one of the upstairs radiators, and the towel warmer, which is up high on the wall.

I am thinking blockage, or there is a very very very slim chance, something that has been playing on my mind, that I may have connected the hot feed to the cold feed when adding the new connections !

The system is a 1980's construction, vented with expansion tank in the loft, hot water cylinder in the airing cupboard, and 1980's baxi gas boiler. Oh yes original skirting board radiators to the living and dining room. - Thy are a bit poor, and as far as I am aware I cannot bleed them. - next job on the list fit 2 large vert rads in living room - Its North facing, huge window and never seems to get warm enough.

Any help would be greatly appreciated, before I throw away my plumbers hat, and call in a professional.

Jim20
 
Last edited by a moderator:
Hi Tap Dancer
I read somewhere else that if you removed the Bleed Screw in the front of the pump, Firstly you can check if it is turning, and try and free it if not, and secondly if you insert a small screwdriver into the center of the propeller you can check the force that it is generating. You apparently should just be able to stop it

Jim
 
Hi Redshaw,

Can you expand a little on your diffinitive assesment too increase my knowledge. and 5/11 ?

Many thanks - this was my initial thought, but dont want to spend out if its not the case
 
Hi Simon,

You are in complete agreement with Redshaw ? £80 to fix, new pump and Labour shorlly not ?
Is there a reason that us DIYERS have the pumps fail when changing a rediator ? or is just chance ?
 
it is a serious false economy re-using heating system water. any carp that is in the system which would usually be flushed down the drain is being put back into the system causing untold damage to said system. imho.
 

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