Central Heating Overflow

[btctworld]

I was in the garden and noticed water coming out the side of the house from the overflow i rushed in turned the water off went in the loft to find the water in the central heating header tank to be hot and overflowing what would cause this?? i only had a couple of rads on at the time

brett

 

[chrishutt]

Blocked feed pipe and pumping over of vent pipe. Common problems associated with sludge in system. Probably needs flushing and cleansing.

 

[btctworld]

would i need a de-sludger? what would you recommend i do in this situation powerflush? or normal flushing of system

 

[jobloggs]

Hope it is what Chrishutt suggested.

Another expensive possibility is a holed coil in the HW cylinder but in this event turning the heating off would not stop F & E tank overflowing.

 

[noonespecial]

Could also be the cold feed and safety open vent pipe are incorrectly located in relation to the pump.

How long have you lived in the property?

Is it possible that this situation has been occuring all along?