Micro bore central heating

[68pages]

I have micro bore central heating and two of the radiators are cold. If I turn all the other radiators off then they get luke warm. Any ideas how to sort this out. Thanks

One of the radiators is a small double and the other is a large single one!
No work has been done recently.

 

[ollski]

Its most likely a balancing issue....try search on here for balancing rads if nothing shows up we will write you a new one

 

[doitall]

unlikely to be a balancing issue as they would work when you turned the others off.

Sludge and or undersized pump

 

[ollski]

true enough, but they do start getting heat to them....it's just the first thing I'd try. Any work been done on the system recently??

 

[kevplumb]

what size are the rad's that are cold

 

[namsag]

Micro - bore so more than likely a partial blockage in the manifolds possibly moved into pipeork.

 

[brumylad]

more thermostatic radiator valves with their pins stuck

do you have thermostatic valves on the radiators

 

[doitall]

more thermostatic radiator valves with their pins stuck

do you have thermostatic valves on the radiators

Good thinking brumylad

But all of them, most unlikely

 

[brumylad]

true but he only has 2 problem rads

 

[kevplumb]

if it's the micrafold be VERY carefull undoing the nut's they have a habit of falling apart

 

[doitall]

true but he only has 2 problem rads

Must be all the excitement the last couple of nights.

you could well be right in that case

 

[brumylad]

I don't know what Pro has against trades who hang wall paper, I reckon it could be pretty difficult at times, what with matching paterns, hanging straight, bubbles and ceilings.

Give me pipes, drilling and wires any day.