Test Thermostat Operation Make sure the thermostat is set to Fan Auto. They are totally useless in my opinion. Lv 7. Any suggestions - never happened before in 7 1/2 yrs This happen to my system. why does my heating come on even when its thermostat is switched off? ken Rank: Labourer. it charges! ChocLover. It does not take the heat exchanger long to reheat this small amount of water back to the thermostat’s temperature setting which is why the boiler quickly turns off again. I had to have a new valve fitted. If the valve fails, water still gets through and they get hot despite the fact the switch is off. Why is my central heating so noisy? 9 Answers. Answer Save. Check your boiler and … Turning down the room stat makes no difference. I did a system update on my android. Have turned thermostat right down - as normal, but the heating is still coming on. This has been happening on and off for about 6 months. Favourite answer. However, as you'd kinda expect from a thermostat, the oven doesn't maintain the same temperature 100%, it occasionally drops, then ups the temperature. OP’s posts: See next | See all Add message | Report | See all. Relevance. During the programmed times when you use hot water, as you would expect, the boiler fires up to heat the added cold water. No one wants to be too hot or resort to having the windows open or even the air conditioner on just because the radiators won’t turn off. but today my laptop isnt Charging. Troubleshooting Problems of Lights Dimming When a Heating Appliance Is Switched On. It's a 1992 Chevy Lumina. I don't recall this happening in previous summers, is there a problem? after summer i turned the hot water on and the heating came on with it although the thermostat was off now when on timer the water heats but so does the radiators , the heating is switched off though.....help!!!! In the home the central heating should be unobtrusive and just do the one thing that you want it to, which is heat the home effectively. i need some help QUICK! Also at the same time it clicked and became lose, the noise in my airing cupboard went. But I noticed that when the hot water was on ( I usually have it for a couple of hours a day) some of my radiators were still heating up. Some very hot, some luke warm, some barely noticeable. Thanks. A Phoenix Tech Explains. The past couple of days I've noticed that our radiators have been hot even though the heating has been off for a while. Reply. For some homeowners, the “AUX” heating source will be electrical resistance heating, which are essentially large wire heating elements that are heated by electricity. We just had this problem earlier this year. If the heating comes on and then off when the hot water is off or satisfied, the orange will float around 50v. Finally, on my way to school, I put my hand down there and felt hot air coming out. I've used hot water during the off periods and it doesn't fire up nor do the radiators get warm. I know that the cylinder in the airing cupboard is very warm when the boiler is firing and cools down when I turn the boiler off. Oldandcobwebby Sun 07-Oct-12 22:09:31. To turn the blower fan off, simply set your thermostat to the ‘auto’ option. I have had the letting agents plumber and electrician out 2-3 times EACH, and they cannot find the problem. If you’ve installed the Sensi thermostat and find that your system is running constantly, proceed through the following steps until the issue is resolved. Joe. Why Does My Heater Come on When System Is Set to Cool? Set your thermostat Mode to Off and Fan to Auto. I have problem with my CH whereby first thing in the morning when the heating comes on it doesn't switch off when the thermostat temp setting is reached and continues to heat the house. We've always controlled the heat by the turning the thermostat up or down, leaving heating & water on at all times. 2) Top element goes off when oven is up to temperature. Reply. I wonder if your pump somehow triggers with this low voltage. Heating has always been a bit problematic and the stat always needs to be up high to come on but hey. Favorite Answer. They may also check the shut-off temperature controls, paying particular attention to the low-temperature switch as this is designed to keep the boiler running if it thinks the water inside isn’t being heated sufficiently; this could therefore be the cause of the fault. old glow worm boiler. never ha d any issues,however the heating is coming on overnight roundabout 2-4 am, it is not cold enough to come on and has never been set to come on at these times ,when trying to get it off it takes ages but after an hour it kicks back on again, we have rechecked thermostat times and set degree lower but this keeps happenning, any ideas Okay, I turned off the h/w and turned in the c/h at the control panel. Why is my cooling/heating running constantly? What's New 3 12 24 72. Then it started shutting it self off and I would have to turn it back on myself. 2020 Feb 13. In the airing cupboard i have a Honeywell V4073A1039 3 Port Y Plan Motorised Valve. why does my heating come on even when its thermostat is switched off? Wow what a superb message board , right i believe i have the same problem has cez-raf yesterday i knocked the heating off on the timer so i could just have hot water but my central heating stays on !!! Just today i noticed my radiators come on even when i've set central heating control unit to hot water only. Radiator hot but heating switched off?! I have thermostats on all my radiators which were fitted in January this year. It is normal for the lights to dim when an appliance that uses a lot of electricity is turned on. Today I have a different problem. The only question: What to do when I got there. Lv 6. Lv 7. 1 decade ago. More specifically, your system’s heater is turning on even though the air conditioner is set to “cool.” What is causing your heater I suspect a problem with the Danfoss 3-port valve. Top. The switch thing WAS all the way on the "warm" side, but everything was off. Ken. Radiator hot but heating switched off?! Or maybe your air conditioning runs for extended periods of time without cooling the house? 1 decade ago. A well maintained and properly operating central heating system should be able to do this relatively quietly. Search My Stuff. Is looks like it by the model of boiler. my worchester bosch greenstar is 5 years old. Here's what i think i've learned from the internet so far, if anybody could correct me where i'm wrong it would be appreciated. Anyone have any idea why and do we need to get a plumber out? It started to restart its self every now and then or it will light up and back off 5 times then shut off. It's normal for the fan to kick on a couple of minutes before heating starts or to stay on for a couple of minutes after cooling stops, but your fan shouldn't run for hours on its own. When it does this, the top element comes on and acts like a grill. “You’ve got to do something; the heating is all screwy. We sometimes get questions from people with radiators that produce heat, even when the heating is off. For the last 3 days, the radiators have heated up when the hot water program is ON and the heating is OFF. i need the charge my laptop while plying because this is my gaming laptop. Hi there, First time posting so hope can be of assistance. by cez_raf » Tue Apr 17, 2007 9:12 am . When you turn off the Central heating using the switch on the timer, the three port valve should prevent any flow to the radiators so they stay cold. Have now turned heating OFF and thermostat right down, and the heating is STILL coming on! Boggy. Radiators have two common but completely different ways of getting the hot water or steam that makes them hot. With all that nice weather last week I turned my central heating off. 9 Answers. 3) Food comes out correctly cooked. 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). 2 0. Ian on 23rd November 2016 at 1:14 am When the timer is set to switches of it does for maybe a min or two then heating comes on again Or usually when you turn on hot water tap cause it to switch it s self back on to heating Any idea thanks Ian. If so, you might be experiencing a malfunctioning HVAC system. Why Does My Heat Pump’s AUX Heat Keep Coming On? I thought it felt a little warm down there by my feet. This was a residential care facility and those people were old and frail. When the heating and hot water are both, the radiators continue to get hot whilst the hot cylinder is calling for heat. I set the wall controls so that the heating would only come on if it was below 22 degrees (which it hasn't been yet) but noticed that the boiler is constantly making a noise. Air conditioner is turned off but fan keeps running. It got so annoying that I decided to turn the wall thermostat controls to 'off' but it still does it. Is your pump controlled by the boiler? 1 decade ago. Would the electrical feed to a boiler ever come off a room’s lighting circuit? If your blower fan is continuing to run after the system has already turned off and you made sure your thermostat isn’t set to the ‘on’ position, then you’ll want to … Why is my car so weird? 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 whenever my water heater came on. The leader was stiff but when I pushed it it seemed to click and now its loose. Your HVAC fan should turn on and off with the rest of your heating and cooling system. Now remember that the gas heat exchanger is still hot. after summer i turned the hot water on and the heating came on with it although the thermostat was off now when on timer the water heats but so does the radiators , the heating is switched off though.....help!!!! I the pushed the leaver on the heating valve. Help needed its red hot in here . If the boiler fires up every few minutes it is using gas but not heating your home. Some of the rooms are roasting and the thermostat’s off.” The call was urgent and the occupants of the affected rooms were not ordinary people. Relevance. If the boiler turns off within a few seconds you know it was probably the call for hot water that was switching your boiler in and a valve problem delivering that heat to your radiators. I presume you are talking about a gas fired heating system. 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