Hi I have a combination boiler runs fine on the central heating side but when i use the domestic hot water it starts making a growning sound and will later trip out. After resetting the thermostat reset button it will then run again I installed the system about 10 years ago this its first problem any ideas
what it could be.
2007-11-15 04:22:57 · 6 answers · asked by moc 2 in Home & Garden ➔ Do It Yourself (DIY)
when the hot water is run the boiler will start making a groaning noise after one and a half minutes. will contine to make the same noise until a total running time of four and half minutes the boiler will trip then requiring to set the overheat thermostat reset button. Thanks for the answers so far
2007-11-17 01:24:43 · update #1
The system pressure is ok set at 1.5 bar
2007-11-17 01:30:49 · update #2
I have now found the cause of the noise water in the expansion vessel thanks to D Whelan for the Answer Cheers Mike
2007-11-17 02:42:52 · update #3
Thermistor, pressure check and also check the big orange tank called the expansion vessell unscrew the dustcap and push pin just quickly to check if its water or air that comes out if its water this needs replacing never known a diverter to cause this prob.
2007-11-16 19:52:21 · answer #1 · answered by davey 3 · 1⤊ 0⤋
Worcester 240
2016-11-06 22:57:28 · answer #2 · answered by caffey 4 · 0⤊ 0⤋
May be worth checking the hot water thermistor, these sometimes go wrong and can cause various problems including the boiler tripping out when hot water is being run. The noise MAY be caused by low pressure although generally if the pressure's at 0.5 bar or less then neither the heating or hot water will work at all.
2007-11-15 06:12:20 · answer #3 · answered by Haza 4 · 1⤊ 0⤋
does sound like a blockage in the plate heat exchanger or connecting pipes.if the divertor was stuck,the primary hot water would be pumped round heating cicuit.the rumbling is the hot water starting to boil,that would explain why the 100 degree saftey stat is popping out.pipes inside boiler need to be stripped and cleaned
2007-11-15 09:15:12 · answer #4 · answered by Turdy malurdy 6 · 0⤊ 0⤋
Could be the diverter valve sticking, if it doesn't do it in heating mode it is unlikely to be much else, if the groaning is after a few seconds, and is like a rumble, then trips on overheat, it may then be a blockage in the water-water heat exchanger.
2007-11-15 06:14:54 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Have you checked the water pressure level. Our one has a meter and occasionally we have to top the water pressure up.
2007-11-15 04:29:55 · answer #6 · answered by Spiny Norman 7 · 0⤊ 0⤋