Blocked central heating.....not one rad working

[Juddy16]

Hi all,

I've attached some pics at the system as requested :

If you need different angles of anything please let me know.

Many thanks

 

[Hason]

If it was me get the guy back who done power flush get an immersion kit set up and cut in to flow and return pipe work --- this removes the need for the boiler. I just don't understand why people flush with out immersion as it confirms proper heat to a rad. I my opinion flush cold is like washing up in cold water!esp micro bore

 

[gigz]

I would try draining and removing the heating 2 port valve, then look inside to see if its actually opening. How did BG test it ? The actuator might be turning but the shaft could be damaged.

 

[Juddy16]

He took the 2 port off and tested the valve manually, it turned with no issues but the problem wasn't resolved.

 

[Agile]

Do you mean he drained part of the system and took the entire valve off????

Or just took off the motor head?

Tony

 

[Agile]

Typically an ABV should be set at about 0.3 bar.

At that setting it would leave that pressure to create circulation through the rads.

But with a microbore system the flow resistance can be very high so a much higher setting is better. Depending on the pump head perhaps 0.4 bar for a 15-50 pump and 0.5 bar for a 15-60 pump.

Tony

The ABV is still set to just 0.3 bar !!!

 

[DP]

OP, when you ask for heating at the programmer, does the boiler fire?
Do you have plastic pipes to the radiators?
Power flush that was carried out. If you have a blockage in the radiators zone, do not see how flush could have been achieved