Problem is that when the thermostat is turned down so that it is "off" the Central heating … http://www.thamesboilers.co.uk Update: I've moved house, so Just Central Heating is no more. Oil central heating comes on at random times, even though the clock is set to OFF. The thermostat still controls whether it comes on or off, but it still comes on when the programmer is set to off. Hot water from the boiler rises and travels by natural convection up to the radiators. Check to see if it is heating even if the dryer is off and if so something is grounded out or the motor switch is bad. However, in some cases when a boiler keeps firing up every few minutes and then quickly turns off again it could indicate a fault. The problem I am experiencing, since setting up, is that when the heating switches off at the set off time… If you’re not at home or are in bed asleep, then the heating doesn’t need to be on. Don't pick the likes of BG as they might try and sell you a new boiler - even if you don't need one! Sounds like a fault somewhere - save time and effort and get it fixed by a engineer. Ken. How do I turn my central heating system off? The HW works ok. Progress to next rank: 25%. 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 !!! I've went through and turned any set times to off, but still randomly coming on. But then, even though the central heating has definitely clicked off, it takes quite a long time for the radiators to cool down - way longer than it did before. One of the radiators even gets warm when hot water on and radiator thermstat is turned off (tested with heat on and hot water off--radiator stays cold, so valves are working and hot water is somehow getting into this radiator). At first I put it down to the timer on the heating, but I have now set all the timer temperatures to a temperature that does not require the … 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. 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. Following all this, we now have a further little problem. Help needed its red hot in here . And I witnessed the fault when I went to look initially, the heating and hot water where both on, the hot water is always set to off, and the heating wasn't within its set demand time. If the heating on the boiler is set to 'ON', then if the thermostat is turned down to 15C, for example, the heating will still come on if the room temperature falls below 15C. It is still coming on the old times. They can also function without electric power for longer periods. Hi there, First time posting so hope can be of assistance. Recently moved to an apartment with gas central heating (which I've never had before) and I'm cofused as to why the heating keeps clicking on, and the boiler keeps firing up. In our recent heating survey we found that around two thirds of people with central heating have a timer to turn the heating on or off. If your furnace keeps turning on and off repeatedly, it can be stressful at best, and cold or downright uncomfortable at worst. Re leaving heat on all the time vs intermittent heating: You say If you’re home is very well insulated, you are better off leaving the heating on at a set temperature, where the thermostat will work with the boiler to maintain the temperature relatively easily, since there is little heat loss occurring. 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. Now we've blown the thermal fuse again, 2 days ago, and I've had someone come and clean the vent in the wall out, which had a good bit of lint in it. The heating is definitely off though as the radiators have gone cold. The only thing is the timer wouldn’t cause the thermo fuse to blow out twice. When your time control is on, if the room reaches the set temperature the thermostat will override the time control and turn off your heating. When your home’s heat is turned on, a pump starts and draws water up from the boiler and pumps it to the radiators. Thanks. This can happen any time throughout the day and night, and you can hear the system kicking in. The high is 20C the low is 15C and the heating control on the boiler is left on 24/7 in … It just seems that if the temperature falls below what I want it to be when the timer is on, the heating will come on even if its timed to be off… Just get some reviews and quotes or save the time and effort and use the firm that I use called STL Heating. Timeswitches and programmers are both time … We had the heating on twice a day over the winter on the timer. Conclusion It’s no fun dealing with a faulty timer clock, and it can be caused by a number of reasons, from a power outage to a fused spur or your boiler settings. Have central heating system controlled by Lifestyle LP522. How do I set-up, view or edit my hot water schedule on my Hive Active Heating 2 thermostat? My query is can our oil-based central heating system be left to run on a timer (we propose to have the heat come on for an hour or so a couple of times during each 24 hour period)? Why do you ask if I prefer ‘energy efficient’ or ‘comfort’ on the Hive Active Heating 2 thermostat? First, it is important to realize that a furnace which is “short-cycling,” as we call it in the business, probably means that its safety features are working properly, so breathe a sigh of relief. Can anyone tell me why my central heating comes on by itself: the radiators get hot and stay hot for around 1-3 minutes then the system turns back off again. The Y plan valve was operating correctly, I checked that, after switching the FCU on and off it sorted itself out. I pressed reset on the thermo - … Heating, but it could have both, it's difficult to tell when the timer is turned off. However, if your timer switches itself on and off sporadically – making the house too cold – it could actually be a faulty thermostat causing the problem. ken Rank: Labourer. I have thermostats on all my radiators which were fitted in January this year. Heating will come on although contol shows heating is off. I have a problem with my boiler where it still comes on even though the programmer is switched off. Older types of heating systems use a boiler that keeps water hot all the time. I jumped the thermal fuse wires, just to be sure it was the reason the dryer wasn't coming on, and it is. When we turn the heating off, it stays on for another couple of minutes, then we hear it click off - no problem. Sometimes this still doesn't work and we have to leave the boiler physically off for an hour or more. I had a plumber come round who told me the valves are working. I turned it all to holiday mode - it is still coming on the old times. However, the boiler is still firing up intermittently, more than an hour and a half later and the pilot light keeps flashing green and after a while, it would turn amber (as if to switch off) but then it flashes green again. This issue can be equally confusing and inconvenient as it could cause your household to become too warm, wasting energy and … So, I've gotten another fuse but it's still heating without running and the timer … Heating will come on although contol shows heating is off. If your boiler doesn’t appear to be working or keeps switching on and off, there could be a problem with your timer or programmer. During this time the indicator light for the hot water is off. A timer or programmer allows you to control when your heating and hot water comes on and when it goes off. We have a two level thermostat and that is how ours is designed to work. 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). And … If yours is heating even on fluff no heat and the element is not grounded out then I believe the timer must be bad. I have had a certified engineer to look at it but he cant find anything wrong Merry Xmas and a … The hot water and central heating are both controlled by a conventional digital control panel, set to turn on and off at predetermined times. With the ‘teeth’ on the dial pressed down the heat comes on and when left up the heat remains off. One day we had to keep turning it on and off about ten times to get it to turn off and stay off. Vaillant boiler firing up when heating is off I've moved into a new flat that has a vaillant boiler. It may seem odd to want to stop your boiler from doing what it was designed to do. It is called short cycling and is likely to make your heating bills more expensive and, in … Although, when the programmer is due to come on (at certain time) this still works and the boiler fires … The Worcester Bosch timer is a user-friendly analogue timer for setting heating time periods. However, this is a dilemma faced by some homeowners as they seek to find a way of getting their boiler to turn off. 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 … They can be programmed so that you never forget to turn your heating off (or on). But only half have thermostatic valves on at least some of their radiators. A boiler timer will turn your heating on at a certain time each day, whereas a programmer will allow you to turn your central heating on at different times on different days. I can turn radiators off manually. This is showing the heating at 01:15 as being very firmly OFF. i have a Valliant condenser boiler, with the central heating on and the hot water off the hot water comes on of its own accord intermitentlly to an excessively high temperature. Hi, I hope that some kind soul out there might help me with a Problem with a Worcester 24cdi combi boiler. We will be away for a while shortly and were advised to turn off the mains water supply. I'm not complaining that the house is warm, but if … 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. Mechanical timers activate boiler controls at the end of a specified time. I have a Megaflow system with potterton profile boiler and Honeywell 9400 programmer.Up to now it was working fine .After draining the system to add fresh inhibitor , the central heating now only works when I turn on the hot water switch.The system was plumbed with separate motorised valve for hot water and separate for central heating,If I switch on the central heating … The heating does "work" and get hot otherwise. 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