Boiler hot, pump working, no heat in radiators

[sburns]

Hi,
I am a novice to this and am having probs with the central heating.
It is an Ideal Immersion heater, connected a tank and a Grundfos Selectric UPS 25-50 130.

The immersion heater is working and is on, the Immersion tank is hot and also warms up the big tank above.

I took out the silver cap in the middle of the pump, and a little water came out, using a screwdriver I could feel the motor working/spinning and rescrewed the cap back on.

One pipe leading from the pump, and one from the immersion tank, I take it for the central heating are both cold, but there is a hot pipe going from the immersion tank to the big tank above.

I have attached a photo to try and explain more, could anyone please point me as to what is going wrong before I have to call in a professional???

http://www.diynot.com/network/sburns/albums/

Many thanks,
Shane.

 

[compheat]

Very inventive, looks to be home made I was going to make what I thought was a constructive comment, but changed my mind. best of look

 

[bengasman]

Looks like a deathtrap to me, do get a pro in pronto to make sure I am wrong.

 

[sburns]

thanks for the replies guys, I will get a professional in tomorrow to have a look, hopefully he can fix it.