We switched on our central heating briefly the other day (Boilermate III & Potterton Suprima Boiler) The heating works fine but will not switch off! As with many of the fixes above, if your system is short-circuiting, you’ll want to contact an HVAC tech to fix it. Hi i have an ideal classic se12 ff and when the hot water is on and the central heating is off and thermostat in the room is set to 0 the radiators are hot. ! Re: Central heating only works when hot water is switched on. was asked about a central heating problem the other day but as not done much of this was not sure. Diagnose & fix heat that won't turn off when it should: here we discuss various causes of too much heat or of a heating system that does not shut off whenit should. My TRANE XE 90 blower fan has a mind of its own. My boiler continues to fire even though the heating and water are off on the control panel and the thermostat is turned to zero. As the title suggests when our Gas Central Heating is turned off at the wall controls the radiators stay hot and the only way to make them go off is to go around and physically turn off all of the individual thermostats on them. Post a Plumbing Job Post a Central Heating Job. It has gone a day without coming on (thermo off the wall the entire time) then just cycles itself on. The hot water and central heating are both controlled by a conventional digital control panel, set to turn on and off at predetermined times. Check that the spindle is turning. Thermostats allow you to control the temperature of the central heating, as well as the time it should come on. As is the case with most appliances, tampering with wires can be dangerous. I have an 18 month old Worcester Bosch oil burning combi boiler supplying hot water, a radiator system in the old part of my bungalow and underfloor heating in the new extension to the bungalow. One of the problems I've had is detailed on this page, so you can find out if this is happening to you. Quick Fix: Locate the pump (this is usually situated near the boiler) and gently tap it with a mallet or hammer to kick-start it. 4. I was told that the central heating would come on by itself even if the programmer was switched to the off position. I have a regular gas fired boiler, hot water tank, a central thermostat in the hall and individual thermostats on all the radiators bar the ones in the kitchen and bathroom. Only way to stop it is to cut the mains switch. Make sure that any humidity control features are … So, if you turn your AC “off” at your thermostat, that command isn’t registering with the fan or cooling system, causing your AC to stay on when you’ve told it to shut off. jenni75 Sun 28-Aug-11 17:54:39. Make sure that the Circulating Fan feature is not active. Any ideas? We use cookies to improve your experience. Contractor's Assistant: Sometimes appliance issues that that you think will be really complicated end up being easy to fix. My central heating comprises a Baxi Duo-Tec Combi HE with a Honeywell Evohome Controller (latest Wifi version), wireless relay box (BDR91) and 6 Radiator Controllers (HR92). I had a plumber come round who told me the valves are working. Central heating pumps are located behind the casing on the boiler. The c/h is turning on and off based on the thermostat and the boiler is turning off by itself - which is more than it has done for the last few days! Up till now my heating has been working fine, on/off with timer, room-stat and tank-stat etc. 22/03/08 - 15:27 in Advice #1. The only way to stop it is to turn the actual boiler to 'heating off'. Often, the logical conclusion is that the timer clock has simply reset itself or is playing up. The radiators are hot. My house has gas central heating, with a Myson Economist boiler in the kitchen, and a pump, timer, etc in the airing cupboard upstairs. Central Heating stuck on. A wiring issue could also be the cause for your boiler not turning off. Set your thermostat Mode to Off and Fan to Auto. Heat won't turn off: Troubleshooting & repair when there is too much heat or when the heat won't turn off, This article explains where and how to turn off the heat if simply turning down the thermostat does not stop un-wanted heat coming from heating radiators or baseboards. No, its an ideal icos He15. None of the other radiators in the house were on. I have a megaflo 300l with valiant ecoTech plus 637 boiler. Just blower, no heat or AC. Find the answer to this and other Plumbing questions on JustAnswer. It comes on when 'hot water' comes on. Otherwise all that is happening is the boiler is 'cycling' - which means it is heating the water in the sealed part of the system heats up to 70, the boiler turns off, the water cools down to say 60 and the boiler starts again to repeats the cycle without any useful heat ever having been taken out. There’s nothing worse than being stuck without central heating and not knowing what the problem is. Then, when power restored, fan stays off. When you have no central heating, first make sure your thermostat is working and then check to see if the boiler pressure is too low. Unknown. It is called short cycling and is likely to make your heating bills more expensive and, in the long term, will cause damage to the boiler. Radiators hot when central heating off and thermostat at 0 (5 Posts) Add message | Report. Underfloor Heating Working Still Even When Switched Off At The Control By Immi, February 24, 2015 in Central Heating Forum & Storage heaters Forums - Forum, Including ELECTRICAL Recommended Posts The system has not been touched, no new parts, no serivce or anything. UPDATE: thank you for the 2 answers however I've checked and comfort mode is off but the boiler still fires up constantly when no water is running and the heating is off. The underfloor is set to come on at 3pm, wall stat set for 19 deg. Can anyone help? Hi, I hope that some kind soul out there might help me with a Problem with a Worcester 24cdi combi boiler. The system is controlled by a "Lifestyle 711" timeswitch (standard two timer on /offs per day program))and I have a single thermastat in the hall. Every now and then the boiler has a mind of it's own and fires up even when none of the systems are calling for hot. Hi there, First time posting so hope can be of assistance. Thanks The heating would come on in … At first I thought the problem was the thermostat, as the heating was coming on even if the thermostat was switched right down but later I realised the central heating was coming on and off at odd times no matter what I set it at and it dawned on me that the central heating was firing up … Lowering the room-stat temp does still turn the heating off. I think the system is working now. In some cases, the best solution to this problem is for your engineer to replace the system’s diaphragm or even the whole diverter unit. Called a plumber who removed the electric valve to the central heating which I am sure is not the problem as it only controls whether the water goes round the heating circuit. The other day the central heating mcb tripped and after resetting the heating is constantly on even when the timer says off. The Appliance Technician I'm going to connect you with knows all the tricks and shortcuts. If a central heating pump is not working, it can wreak havoc on your whole heating system. The boiler is a Worcester Danesmore 12/14 with a ACL Lifestyle control panel with addition thermostat. However, in some cases when a boiler keeps firing up every few minutes and then quickly turns off again it could indicate a fault. Only resolution is to switch off at power socket. It's made a lot more noise than it should have done. By continuing to use this site you consent to the use of cookies as described in … This is showing the heating at 01:15 as being very firmly OFF. It is however only the last couple of weeks that the pump has been running half the night (even when the hot water and heating are turned off). Issues with your boiler’s wiring. We've got gas central heating and over the last couple of days during the cold weather, one radiator has continued to stay warm during the day while the heating is off. over summer). Does megaflo system needs boiler be on when heating and hot water is not on. The boiler recently started to fire occasionally when the timer was off and the pump runs even though the timer is off. We’re going to cover the most common heating pump problems and what can be done to fix them (or, how much central heating pumps cost to fix). Yesterday I noticed that the radiator in our bathroom was hot, even though the heating is switched off. Where is the pump located? It's really odd and I'm baffled as to why this and only this radiator in the bathroom remains warm. The pump on my central heating system is on permanantly even when hot water and heating button are switched off. Question - My pump keeps running even though central heating is off - BN. Even with the thermostat removed, it randomly turns on. The only way to stop the pump is turn off the boiler, controller etc at the mains, although it does seem to turn off eventually by itself if you don't turn off … If the heating hasn’t come on … Central Heating is coming on even when switched off at the control panel. In this case 'c' means central heating being supplied. When the thermostat is set to Fan On it may sound like the heating or cooling is running even when it isn’t. New posts New video ... they both pump out heat full blast. We usually switch the central heating to 'on' using the switch on the timeclock on the boilermate III and use the thermostat to control the heating (turning the thermostat down to 10 degrees when we want to switch the heating off). Here at Superwarm, I receive a lot of calls from customers who suspect this might be the case – however, sometimes it turns out to be something else entirely. 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