The 3-way valve stays open and the pump running. I have read about the pump running on to dissipate heat, but my boiler also comes on and off aswell, so the radiators still get hotter and the house ends up much hotter than the room stat set point. Have changed room stat for new one, all other controls seem ok. If I turn the mains power off, then the valve shuts and the boiler turns off. When the power is turned back on again the system is ok, until the heating is called for again next time. Any ideas????
2006-11-03 22:18:32 · 6 answers · asked by Paul 1 in Home & Garden ➔ Maintenance & Repairs
It sounds like the system is wrongly wired, depending if this is a new problem or has it always been this way? Unfortunately there are only about 25% of electricians that fully understand CH control wiring, I have come across dozens of total messes over the years. This is partly caused by wiring diagrams with different components, boiler/ programmer/ valve(s) / stats that are incompatible with each other. I hardly ever look at a wiring diagram as I know in my head what connects to what. Some of the special junction boxes have a set of diagrams which DO show interlinks for popular systems.
If your boiler has completed its over-run to dissipate residual heat it should stay off untill heat is called for again. The valve may or may not 'close' depending on the make and whether it is a 2 way or a mid-position type. It sounds like you have a permenant feed to your boiler if it is cycling as you say. It could also possibly be a fault in your valve, I have never liked 3 way valves, and would always opt for two zone valves instead, much more reliable and simpler electrics.
****Make sure that you don't have a Frost stat somewhere (Loft / garage) that is set too high, that would bring the heating on at any time.****
2006-11-03 22:47:09 · answer #1 · answered by jayktee96 7 · 0⤊ 0⤋
Try this-
You should have 3 Thermostats
One on the boiler, One on the wall for your rads and one fixed to the hot water tank that supplies your hot water.
If all of these are working correctly check to see if you have a solenoid valve in the pipe that leads to or from the boiler.
If it has it will have a lever tucked under the bottom that you can pull to manually lift the valve.
Lift the valve a few times to make sure it works and if that doesn't do the trick the valve lifting motor needs replacing.
It is a dry job normally so you should not get any water on your floor.
If it is none of these then you need a new control panel unless a wire has been pulled out somewhere.
Good luck.
2006-11-03 23:00:49 · answer #2 · answered by Anonymous · 0⤊ 1⤋
Do you no longer have a time clock to set your working circumstances for the heating and warm water, in case you do there ought to be a form to show you how to instruct off the heating and merely have the water on in the process the summer time. in case you in easy terms get water on the 2nd while the heating is on then as has been reported you have a topic with a motorised valve. As there are countless manufacturers of those valves and a few artwork in a diverse thank you to others i might advise you receive the centers of a sturdy heating engineer to seem on the subject for you. some valves could have areas suited to repair and a few require an entire substitute.
2016-12-09 02:17:51 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Ususally the pump runs on to cool down the unit rather like modern car radiators.
There should be an additional temp control on the boiler too that is not functioning properly.
Look in Yellow pages and pay for a reliable contractor to service it. It may seem costly but so is burning up gas you don't need.
2006-11-03 22:31:15 · answer #4 · answered by Anonymous · 0⤊ 0⤋
call in a professional corgi registered engineer to sort it
2006-11-03 22:50:05 · answer #5 · answered by TERRY H 4 · 0⤊ 0⤋
Get it serviced.
2006-11-03 22:21:13 · answer #6 · answered by Polo 7 · 0⤊ 0⤋