Hi Folks
Strange problem. Everything working fine three weeks ago, not so now.
One radiator is not getting any heat, it is downstairs and I suspect one of the last in the loop.
I've check the TRV pin and it moves up and down fine.
I've tried to bleed it and there appears to be no air in it.
I've opened the lockshield all the way.
I thought perhaps I could turn the heating up to the max on the thermostat and then turn off the other rad's at the trv (all drayton, look older than version 4) to see if that forced heat to the problem rad. All that did was get the top of the rad warm, but the bottom is still cold.
Then I noticed that most of the other rad's were still hot - so all the trv's are shot. Had a fiddle with some of them and got them working again, some are more stuck than others and so I've left them for now.
Having done that, I ran the same test again and this time the problem rad got hot.
Turned all the TRV's back to the appropriate settings and the problem rad is stone cold again.
I though perhaps sludge, but;
Worcester Bosch 30CDi installed three years ago.
Power flushed system before install.
Magnaclean installed serviced annually with the boiler (last time was fairly clean and it was a week before the problem began)
Inhibitor is used.
Water softener is used and has been in place for many years.
I will probably be replacing the trv's that are broken (may as well do them all I guess), I'm not sure what the problem is with this rad, as I don't think that will help.
Been in the house for almost a year (25 year old house) and it was working fine until recently.
Thoughts?
Strange problem. Everything working fine three weeks ago, not so now.
One radiator is not getting any heat, it is downstairs and I suspect one of the last in the loop.
I've check the TRV pin and it moves up and down fine.
I've tried to bleed it and there appears to be no air in it.
I've opened the lockshield all the way.
I thought perhaps I could turn the heating up to the max on the thermostat and then turn off the other rad's at the trv (all drayton, look older than version 4) to see if that forced heat to the problem rad. All that did was get the top of the rad warm, but the bottom is still cold.
Then I noticed that most of the other rad's were still hot - so all the trv's are shot. Had a fiddle with some of them and got them working again, some are more stuck than others and so I've left them for now.
Having done that, I ran the same test again and this time the problem rad got hot.
Turned all the TRV's back to the appropriate settings and the problem rad is stone cold again.
I though perhaps sludge, but;
Worcester Bosch 30CDi installed three years ago.
Power flushed system before install.
Magnaclean installed serviced annually with the boiler (last time was fairly clean and it was a week before the problem began)
Inhibitor is used.
Water softener is used and has been in place for many years.
I will probably be replacing the trv's that are broken (may as well do them all I guess), I'm not sure what the problem is with this rad, as I don't think that will help.
Been in the house for almost a year (25 year old house) and it was working fine until recently.
Thoughts?