Hi everyone - we have a Trianco 110 HE Combi, two pipe setup, that has been working fine for about 6 weeks, then got low on oil, was refilled yesterday - and worked fine until last night.
I reset the timings on the timer so that it wasn't running 24/7 which it has been since our first born arrived home 12.11 and after that, the central heating hasn't come on. I've reset the timer, re-entered the original times, used it on continuous, boost, advance, pre set everything and it won't do a thing. When I ran the hot tap, the water was cold for ages (with the boiler fired and running - so the burner isn't locking out) then eventually I got hot water, and the central heating came on. The C/H pump was red hot, as is the pipe coming from inside to the central heating (if the makes sense, top right hand side of boiler). Then about an hour later it stopped again. Got up, ran the tap again, but the burner didn't fire. No burner lockout, so after some investigation I found the thermal lockout reset under the control box. This would not reset, until I left the whole lot switched off for about 2 hours. It then reset, but the C/H still would not come on, just a faint buzz from the C/H pump.
Ran the tap again, lots of cold water, burner fired up and eventually got very hot water, but then the thermal lockout tripped again.
(edit) I've taken the C/H pump off and checked that it spins, and it's fine - as it worked earlier this morning with it's usual quiet hum, so I don't think it's that causing the problem, I just don't know how to dissipate the heat that's built up and seems to be causing the thermo lockout to trip.
Does anyone one know what is causing this thermal lockout to trip, why the pipe on the top RHS is still so hot when everything else has cooled down, and how I can get it to work again today as our little one really doesn't need to be getting cold....
Thanks in advance...
I reset the timings on the timer so that it wasn't running 24/7 which it has been since our first born arrived home 12.11 and after that, the central heating hasn't come on. I've reset the timer, re-entered the original times, used it on continuous, boost, advance, pre set everything and it won't do a thing. When I ran the hot tap, the water was cold for ages (with the boiler fired and running - so the burner isn't locking out) then eventually I got hot water, and the central heating came on. The C/H pump was red hot, as is the pipe coming from inside to the central heating (if the makes sense, top right hand side of boiler). Then about an hour later it stopped again. Got up, ran the tap again, but the burner didn't fire. No burner lockout, so after some investigation I found the thermal lockout reset under the control box. This would not reset, until I left the whole lot switched off for about 2 hours. It then reset, but the C/H still would not come on, just a faint buzz from the C/H pump.
Ran the tap again, lots of cold water, burner fired up and eventually got very hot water, but then the thermal lockout tripped again.
(edit) I've taken the C/H pump off and checked that it spins, and it's fine - as it worked earlier this morning with it's usual quiet hum, so I don't think it's that causing the problem, I just don't know how to dissipate the heat that's built up and seems to be causing the thermo lockout to trip.
Does anyone one know what is causing this thermal lockout to trip, why the pipe on the top RHS is still so hot when everything else has cooled down, and how I can get it to work again today as our little one really doesn't need to be getting cold....
Thanks in advance...
