riello 40 cuts out
- Thread starter seosamh
- Start date
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i know how to service an oil burner out of necessity and how to remove one. yes other than that i know very little about plumbing ie flow and return etc.. and i find it strange that two radiators work in the house while the central heating doesnt. thats why im on this site looking help and advice.
Ok so the burner isn't locking out (illuminated lamp on the control box) but the system is still shutting down....this indicates that the boiler is overheating because it cant disperse the hot water that it is producing.
therefore I assume that the circulating pump isn't working, or at least not to its full potential. If the boiler could disperse the heated water, then the overheat stat wouldn't cut in - assuming that all of the thermostats are working, of course.
All motorised valves should be fully open at this time - but if the pump isn't doing its job the system will still shut down.
John
therefore I assume that the circulating pump isn't working, or at least not to its full potential. If the boiler could disperse the heated water, then the overheat stat wouldn't cut in - assuming that all of the thermostats are working, of course.
All motorised valves should be fully open at this time - but if the pump isn't doing its job the system will still shut down.
John
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Ok so the burner isn't locking out (illuminated lamp on the control box) but the system is still shutting down....this indicates that the boiler is overheating because it cant disperse the hot water that it is producing.
therefore I assume that the circulating pump isn't working, or at least not to its full potential. If the boiler could disperse the heated water, then the overheat stat wouldn't cut in - assuming that all of the thermostats are working, of course.
All motorised valves should be fully open at this time - but if the pump isn't doing its job the system will still shut down.
John
therefore I assume that the circulating pump isn't working, or at least not to its full potential. If the boiler could disperse the heated water, then the overheat stat wouldn't cut in - assuming that all of the thermostats are working, of course.
All motorised valves should be fully open at this time - but if the pump isn't doing its job the system will still shut down.
John
Sorry about the echo....
how do i know if the pump is working, does it hum and vibrate slightly when working, because the pump is doing neither at the moment. btw what u say makes sense to me now. is it a case of replacing the pump. btw thank you for the advice.
Put your hand on the pump and it should hum and vibrate slightly, and the pipes to and from it should be well hot if its circulating....crack open the central large screw and you should expell some water - turning the impeller shaft behind this with a small screwdriver should tell you if its turning or not. Some pumps seem like they are working but they're not...!
Wishing you all the best with this!
John
Wishing you all the best with this!
John
Not necessarily a pump problem, could be an air lock in system.
When you take out the central screw, is the pump spinning? use a small screwdriver to feel the shaft.
When you take out the central screw, is the pump spinning? use a small screwdriver to feel the shaft.
Do what oilhead says in his last post and if, when you put the screwdriver into the pump centre and the impellor isn't turning give it a spin with the screwdriver. If it starts to run, great. Switch it off and back on again. If it runs then forget it, if it only runs after you turn it with the screwdriver but will not self start then it is the capacitor in the pump connector box that is faulty. However I would expect more than a trickle of water from the centre screw hole so an air -lock is still possible.
i noticed that when i set the heating to come on in the morning everything looks as though it is working except that the burners not burning and then the light on the burner is lit. i use the dial with the pins as a clock as opposed to the digital clock.
I think it is time to get it serviced by a competent oil service technician
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