Potterton Netaheat Electronic 10-16

[Blahblah01]

I have searched through the Forum and: firstly, I know enough not to take this boiler apart, and secondly I know that I will have to replace it soon as it is bad!

However, is there any short term hope for the boiler?

I have had an intermittent problem, which I fear is now permanent. It stops distributing heat and turns itself off

If the Boiler is cold enough it fires up, then after a few minutes turns itself off. The Hot Water tank is left cold as are the radiators, however, the F&E tank is warm to hot. Occassionally, the is a very strange noise (apparently from the loft) which I thought was a bird stuck in the eaves/loft. However, there was/is no sign of birds and I have noticed the noise is occurring when the boiler turns itself off. The noise is worrying me, and I am concerned (in a lowish probablility high impact sort of way) that the boiler may blow up.


Previous times this problem (of it not working) has been resolved by draining/refilling the system and a fixing a loose electrical connection in the timer. The noise is a very recent thing.

Is there anything I can do in the short term to keep it working? (Please note I am not CORGI, but know enough to know what not to touch/do.)

Thanks in advance.

 

[kevplumb]

1 check the pump is running

 

[Blahblah01]

It does hum.

Do I need to take it apart etc to find out if it is actually working?

PS Currently the system is drained.

 

[kevplumb]

undo the screw in the middle and see if the shaft is spinning or use a screrdriver to turn the shaft

 

[Blahblah01]

undo the screw in the middle and see if the shaft is spinning or use a screrdriver to turn the shaft

I have removed the plastic screw.

Do I now undo the metal one?

I assume that I need to refill the system and turn on the electric. Do I need to turn on the boiler too?

 

[kevplumb]

is this like your pump

 

[Blahblah01]

Kind of.

Mine is red with a silver/grey disc plate.

Euramo Ltd (Salmson Pumps) MXL 130.

Thanks for your prompt replies.

 

[Blahblah01]

Bumping, as I am cold here

 

[kevplumb]

you need to make sure the pump is turning the screw in the centre has the impeller shaft under it see if it will turn

 

[Blahblah01]

Finishing refilling the system now.

Should water drip, or shoot out of the pump when the large screw is removed? (Heating was on when I did this)

 

[kevplumb]

drip is the shaft spinning

 

[Blahblah01]

Shooting here.

Electric on and Boiler on and firing (for a change).

 

[Blahblah01]

Water spurts/shoots out and the spindle does not spin, although it is movable.


If I move the spindle with a screwdriver the humming gets louder.

 

[kevplumb]

pump is either sticking or its gone to that great heating system in the sky

by the sound of it

 

[Blahblah01]

I have just finished draining it down again and I am about to open the pump.

Any ideas/suggestions?