potterton profile

[ej-ay]

Hi guys:smilewinkgrin: thanks for all your previous replies, you dont know how helpful they were, anyway i got called to a house, and the lady complained that the radiator was hot despite the fact that the room stat wasnt calling for heat....
I got there it was a conventional system three port valve and i checked it by pushing the valve manually and observing and it returned but not fully...i checked with my multimeter, there wasnt any power on the live switch...
would changing the divertor valve solve the problem, or the programmer, and room stat also have to be changed? thanks for your relies

 

[diamondgas]

Sounds like the diverter is passing ej-ay Is it a radiator near the diverter and not an old 'towel rail' radiator?

 

[tipintim]

She probably has had this problem for years ( or inherited the problem ). The hot water return is not cut back far enough and is tracking otherwise other rads would warm up. IMHO
Tell her to get her purse out, or turn rad off. :smilewinkgrin:

 

[ej-ay]

may be she inherited the problem but she isnt very happy at the moment, specially when i left without fixing it...

 

[ej-ay]

Hi diamondgas i dint ask her which rad was getting hot, but we established that it was the divertor valve was the problem, so fixing should solve the problem or do we need to change the rrom stat and programmer too. thanks:smilewinkgrin:

 

[diamondgas]

Diverter should solve the problem if it's passing ej-ay. On h/w only the valve should be at rest. Turn the spur off and see if it moves any further back to rest position. That;ll tel you whether it's getting any external power moving it IMHO

 

[mfgs]

If you run on hot water only from cold you will be able to feel if the 3 port is passing or not. Are you sure the rad isnt on the primaries? Could also be reverse circulating if the hot water return isnt piped up correctly.

 

[tamz]

As Tipintim and mfgs said feel the pipes at the valve and you will know if it is passing but if it is only the 1 or 2 rads it is probably back circulation. Check by having it on for HW and feeling the pipes on the rad to see which is hottest. Turn the heating on and if it is the opposite one the system needs altering.

The customer will be even more not happy if you change the valve and it still does it and even worse if you swap the programmer and stat.