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Discuss Why do i have one cold radirator in the Plumbing Forum | Plumbing Advice area at PlumbersForums.net

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1
Had a combi boiler installed, Power flush as well. but I have 1 stone cold radiator, all the rest through the house get piping hot, thermostat have been changed, inlet valve has been changed, water flows through the radiator, if youy try to bleed it it comes straight out. so no air in the system.
But the water is cold, won't get hot at all. Even had the radiator off the wall and blown through...

What else could it be?? Does anyone have any ideas??
 

Riley

S. Mod
Plumber
Gas Engineer
Messages
10,756
You get water out of both rad valves?
what size pipe? 15mm or microbore? Was system properly balanced by installer?? Try closing all other rads does that rad warm??
 

Aquarius

Plumber
Gas Engineer
Messages
1,147
Just to add, in case you’re still after advice, do the pipes to it get warm/hot? Did it work before combi install? Have you contacted installer?
 

cjg

Plumber
Messages
318
if the pipes are mico/10mm and come down from above you may have a air lock,
turn off trv and lockshield and then open one into bucket till warm water comes out, then do same at other side, reconnect job done.
 

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