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- 22 Nov 2007
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Hi All
I'm always draining down my central heating system and refilling after fitting new rads here and there. It's always been a b*gger to get rid of the airlocks on this system so I'm kind of used to it.
This time I have been trying to get rid of an airlock for the past 2 days! It just won't go.... I assume it's an airlock as I can't think of anything else it can be. There's one rad in one of the rooms that is staying cold no matter what, it's full with water but stays cold. By the way, this isn't the rad I just fitted - that's in another room.
After fitting the new rad, I filled the system as normal, ran around the house and bled all the rads, switched the system on, had the usual airlock probs where the boiler stops after about 5 mins of firing as it's reached temperature but hasn't been able to pump the water round the house due to an airlock or two got rid of that (or so I thought) and the house seemed to be up to temperature - apart from this one rad.
My 'Auto Air Vent' started pushing water out of the top a little, only a drip at a time but looks like it has been doing that all night and so made the ceiling damp a little, thankfully not too much!
I have a pressurised system (1.2 bar cold) with a Grundfos pump if that helps any. Please help I am running out of ideas!
I'm always draining down my central heating system and refilling after fitting new rads here and there. It's always been a b*gger to get rid of the airlocks on this system so I'm kind of used to it.
This time I have been trying to get rid of an airlock for the past 2 days! It just won't go.... I assume it's an airlock as I can't think of anything else it can be. There's one rad in one of the rooms that is staying cold no matter what, it's full with water but stays cold. By the way, this isn't the rad I just fitted - that's in another room.
After fitting the new rad, I filled the system as normal, ran around the house and bled all the rads, switched the system on, had the usual airlock probs where the boiler stops after about 5 mins of firing as it's reached temperature but hasn't been able to pump the water round the house due to an airlock or two got rid of that (or so I thought) and the house seemed to be up to temperature - apart from this one rad.
My 'Auto Air Vent' started pushing water out of the top a little, only a drip at a time but looks like it has been doing that all night and so made the ceiling damp a little, thankfully not too much!
I have a pressurised system (1.2 bar cold) with a Grundfos pump if that helps any. Please help I am running out of ideas!