no hw no ch at wits end

[dazo]

myson appollo fan fair boiler drained system inspected pump seems ok,pump on return flow flow pipe hot mad hot return pipe cold could heat exchanger be blocked at wits end please help

 

[plumber (new blood)]

air lock,see any auto-air vent are out of service.

 

[Softus]

...inspected pump seems ok...

Please give more information on your method of inspection and criteria for concluding that the pump is "ok".

In case it helps, I generally take the view that no component can be classed as OK until all faults are fixed and the whole system is working perfectly. This mode of thinking tends to prevent wrong assumptions being made, wild geese being chased and red herrings being, um, er, well, whatever it is that people do to red herrings.

 

[Agile]

a. A smoked herring having a reddish color.

b. Something that draws attention away from the central issue.

[From its use to distract hunting dogs from the trail.]

 

[Softus]

 

[dazo]

sorry guys removed pump(grudfos pump) spining ok but not under pressure of water is it worth trying new one only rad nearest to boiler getting hot return pipe very cold how can i vent boiler its self?,everything av on forum points to pump.
pump body hot hope its some use help!!!!

 

[ChrisR]

Is the boiler a high point or do pipes go upwards from it?
Something to consider: //www.diynot.com/forums/viewtopic.php?t=60696

 

[dazo]

reply to chris pipes go up 1st rad allmost on top of boiler.

 

[Softus]

sorry guys removed pump(grudfos pump) spining ok but not under pressure of water

Sorry - this is still equivocal.

Are you saying that you removed the pump to test it and determined that the pump was working correctly?

And are you further saying that when you reinstated the pump that the pump was no longer working correctly?

everything av on forum points to pump.

If so, then, er, surely the pump is faulty, and all other bets are off because you need a new one. Surely?

Is there some reason for you wanting to avoid replacing the pump?

 

[Agile]

Its good to take it out to check it but you needed to test the torque with the "finger test".

Then on installing it needs to be bled of air and the two valves need to be open ( that may be different from just "opening them" ).

If its too hot to touch then its not pumping water as the fluid medium cools it.

Tony

 

[dazo]

new news changed pump still same,still boiler bubbles away when cuts out seems like water falling back in to boiler any ideas?????.

 

[Softus]

Are you saying that you tested the the old pump and determined that it was not working correctly?

If so, then how did you test it?

 

[dazo]

softus new pump brand new so cant be pump

 

[lor]

hex on these block easily. blr is v old

 

[acs-newbie]

seems to me like the first radiator is getting hot through gravity circulation and you still have a problem with the pumping of the water around the system ie voltage supply to the pump, blockage in the return pipe or an air lock in the system. just a few thoughts that you have probably already checked out.

Andy