Radiators not warming up - Vaillant Boiler 242E

[turbuch]

After being told that the system needed flushing a second time, I had all the radiators & Pipework replaced. (a couple of pipes downstairs were not replaced). So should there still be any sludge in the system - enough to cause 4 radiators from working properly.

The plumber bought the radiators & as far as I can tell they are new. Anyway of checking if this is not the case.


Thanks.

 

[croydoncorgi]

Sludge in a system will tend to work its way to the bottom, by gravity.
If the pipes not replaced are at or close to the bottom of the system, there could easily be sludge or other debris in them. But should not be too difficult to remove.....

 

[ChrisR]

Pick a small non-working one, take it off and hose it through to see what you get. Then see if it performs when replaced.

 

[turbuch]

Thanks will try it at weekend, weather permitting

 

[turbuch]

Hi guys

I flushed out all the downstairs radiators, 1 of them is still not warming up. 1 of them still takes a long time to warm up.

I also tried shutting off all the upstairs radiators, it makes no difference to the downstairs radiators.

ANy suggenstions.


thanks