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. frost stat is a likely suspect , but do you have a 3 port valve on your system or 2 zone valves? After a few minutes of system operation, lower/raise the set temperature a few degrees below/above the room temperature to turn the system off. Is there anything I can do? If the header tank runs dry in that time, then there's a serious leak somewhere in your heating. Then i read this blog. The table below shows what each terminal letter represents. I’m using Ideal HE35. I turned all the thermostats off and the boiler still kept working. Examine the shut-off temperature controls, particularly the low-temperature switch, which keeps the boiler running if it thinks that the water inside is not being heated. Are you thinking about buying a beautiful old home but worried about the possibly antiquated boiler heating system? If continuity is not detected, and replacing the thermostat face plate makes the system run continuously again, your system may have a sensitive equipment circuit that is reacting to the power sharing feature in the thermostat. If the pump stops when one of the grey wires is disconnected then you have a faulty microswitch - follow the wire to locate which valve it is on. My thought was some sort of Taco zone valve issue so I twisted each power head off and back on one by one. I think the system is working now. Older boilers may still use pilot lights to ignite their burners, rather than the modern electronic ignition systems. Even when you shut off the heat at the programmable thermostat the boiler keeps running. Please enable JavaScript to use this website. Any leak throughout your central heating will cause a boiler to lose pressure. My boiler fires up every 90 mins or so, when the heating and hot water are off. ST75, Sensi Touch Smart Thermostat (Black), ST75W, Sensi Touch Smart Thermostat (White), University Multiple Thermostat Management, Troubleshooting Sensi Thermostat Wi-Fi Connectivity. Everything's been fine for a week but I woke up at 02.00 hearing the boiler firing even though water was timed off and heating room stat was turned right down. I have replaced - Answered by a verified Plumber I have replaced - Answered by a verified Plumber We use cookies to give you the best possible experience on our website. 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! SnrDev Posts: 6,094. Nest turned "off" the heat after the temperature came up. somw pumps are controlled from the boiler, usually via a temp sensor or timer. 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 the boiler. 2 2 Answers from MyBuilder Heating Engineers . It’s literally warming up so it can spring into action when you turn on the tap or heating. Overun is S7, and this is displayed for 5 mins after boiler shut down. Ensure you have read our Small Make sure the face plate is set for Fan AUTO and Mode OFF. Why am I having trouble with Window's Safemode? I'm still certain there's no gas being used. Once it becomes clear that your boiler is heating the house when it isn't necessary, you should turn the thermostat down. I also have a switch on the return to the boiler which I guess is an overheat switch set a 60. If the two devices don't match, try removing the control switch, and then retesting your boiler. The pump should run for a few minutes after the call for heat has ended. The worry is usually caused by a fear of overheating, like boiling a kettle with no water in it, but in reality, it’s unlikely to cause any damage or risk. First, try to bleed your radiators to remove the air.. Now test for continuity on the pins on the back of the thermostat face plate from RC or RH to the terminals corresponding to the device running (G – fan, W/E – furnace, Y – compressor). Raise it manually and you will hear the pump go off. … We use cookies and similar technologies to improve our website, to personalize website content to you,  and to deliver advertising messages and offers on content that are relevant to you. Reply. If you find that the heating is coming on outside of the pre set times this is usually due to one of two valid scenarios. It's the valve sticking down in the heat position. My main question is why does the boiler run in the summer when all the thermostats are turned way down and so there should not be any “calls” for heat coming from the thermostats. 2. The Fix. I couldnt understand how you could get power to the burner and the pump if the controller was switched off. I checked this while motorised valve was still assembled and found that the power was flowing as soon as the main switch was put on. But then once the boiler turns off, the pump keeps running. This will make future lever tap repair or replacement far simpler as you will be able to turn the water off below the tap and kerp the water to the rest of the house on. Put one test probe on the pin labelled RH and the other test probe on the pin labelled W/E. 0. Distillation … And, this is not necessary a leak on the boiler. I have turned each individual valve on each radiator to off but the boiler is still running. WE COLLECT PERSONAL INFORMATION SUBJECT TO THE CALIFORNIA CONSUMER PRIVACY ACT. The boiler's "burner" light was on when I went into the garage to check the main circuit unit but it went off while I was in there, and therefore the meter reading stopped rising. First, try to bleed your radiators to remove the air.. System and heat only boilers will continue to heat up the radiators, and you might even get a bit of hot water out of the cylinder, but that will dry up pretty quickly when there’s no pressure or new water entering the system. When it next happens (i.e. Edit: Thanks, I will try that and see if it works. Turned on living room thermostat, boiler started and baseboard stayed cold. Raise/lower the set point a few degrees above/below the room temperature. howtomendit.com costs nothing to use and you can ask a question without an account or logging in. Not so easy, especially when it doesn't happen all the time. Using a boiler for your central heating, you have two pipes, the flow and the return. Learn more about how to configure your thermostat here. Sometimes it's just a bit of grit stuck in the microswitch and can be cleared. However, I checked the radiators and they seem to be cold. Nest turned "off" the heat after the temperature came up. To keep natural convection from allowing hot water to circulate to the radiators when the pump is off on, there is a check valve. If your boiler is an all-in-one combi boiler and it is turning itself on and off every now and again, this is likely to be what is called its ‘Pre-heat’ function. ), (Enter your name as you wish it to be displayed. No, boilers in operation today do not boil water (myth number one … 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. Reply. The Heat Link was definitely not in manual mode, but I did have it in manual mode earlier in the week to test the rads. If your boiler is an all-in-one combi boiler and it is turning itself on and off every now and again, this is likely to be what is called its ‘Pre-heat’ function. If your central heating system is turned off the boiler pressure should be between 1 and 1.5 bar. If the pump runs continuously when the boiler is off the overrun control is faulty. ljs_85. In this case 'c' means central heating being supplied. You should also check the temperature of the water. he did say that if it happens again he would change "everything" meaning valve heads, controller and possibly tank stat. If is designed to do this (I forget the reason, possibly something about keeping the pump working?). So even when the heating thermostats are completely off, I still get very small amounts of heat coming from some of the baseboards on the first and second floor. Boiler is off. Amazing. Get a boiler deal Read on to find out if turning off your boiler for the summer is a good idea. 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. If you don’t turn it off and allow it to cool before working on it, you could damage the system or hurt yourself. argue for having their heating on all the time believe it takes additional energy to bring their home up to temperature when the heating has been switched Our customer support is available 7 days a week. My boiler keeps firing up even though the timer for hot water and central heating is switched to Off. If it was my house, I wouldn't care and it would be easier to solve but it's a rental and there's a tenant there. There may be a short in the wiring to the equipment. If your system still runs after 1-2 minutes, remove the thermostat. If you’ve bled your radiators but the noise persists, kettling could be the culprit. Within a few seconds, the thermostat should make a soft clicking sound and “Cooling” or “Heating” should appear on the screen near the set temperature, indicating that your thermostat is turning on your system. When your home’s heat is turned on, a pump starts and draws water up from the boiler and pumps it to the radiators. Still Boilers & Heating Equipment. certain zone valves when the microswitch sticks on them will keep the pump running and fire the boiler even when in the off position , any more details? This means that the needle should still stay in the green area of the pressure gauge. A wiring issue could also be the cause for your boiler not turning off. Please help . If after 3 or so minutes your system is still running then you may need to cut the power to the whole heating system. Once your home reaches the desired temperature, the heat turns off which causes the pump to stop running. This could be a pin-hole in a radiator, a loose connection on a rad valve, or even a weak soldering joint on the copper pipe. Shop All Stills Micro Distillery Equipment Copper Moonshine Stills Stainless Steel Stills & Parts Still Boilers & Heating Equipment Flute Stills Alembic Stills Essential Oil Stills. Distillation Supplies. That's it. Many thanks for your time and patience. Hi, I have an Ideal Logic heat 24 boiler. Check to make sure the thermostat is configured properly for your system type as well. There may be a short in the wiring to the equipment. 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. 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. Make sure that any humidity control features are not active. If your boiler is older than 10 years, it may use a pilot light, and you probably already know if it does. Heating, but it could have both, it's difficult to tell when the timer is turned off. Edit: Thanks, I will try that and see if it works. Place the thermostat face down on a counter, and open the back. Does your old thermostat have two sets of terminal labels? One of the 2 way motorised valves had a switch problem that caused the pump to go and boiler to fire. We have a two level thermostat and that is how ours is designed to work. So if you set the thermostat to a temperature below the room temperature, heat should be "off" and heat should soon stop coming out of radiators, baseboards, or air registers. Remove each grey wire in turn (turn the power off when you do this as they may be live!). But at the moment I have turned off the main water supply to the house and I turned on all three heating zones just to test the system and boiler to see what would happen. The flow is the pipe heading out of the boiler, which is used to heat your radiators. hello i have a question my boiler just keeps running, the thermostat kicks on and the boiler runs then kicks off and the pump stops to, the thermostat is still asking for heat so it … Thanks. For your fan or compressor running constantly, make sure to test between RC and Y and RC and G. Put one test probe on the pin labeled RC and the other test probe on the pin labeled Y. I have turned each individual valve on each radiator to off but the boiler is still running. Even when you shut off the heat at the programmable thermostat the boiler keeps running. Standard Heating Service Technician David Howland is here to help. :help:I have a two zone Smith GB100W gas boiler that still runs after the thermostat has reached the desired temp. Unless you turn on a hot tap, the system will carry on running as if nothing has happened. Reach under the boiler and pull out the tray that is concealed underneath. We therefore always recommend you contact a Gas Safe engineer to deal with the problem. So if we manually turn the programer heating to off or the programmer automatically as part of the program turns it off, heat still gets chucked out of the radiators and the boiler still remains on and the pump in the airing cupboard. If I turn it all off at the wall the pump goes off, but as soon as I power it on again the pump restarts. Your boiler will have separate controls to turn on the heating and hot water. When the house reaches the desired temperature, or the heat is turned off, the pump stops running. Thanks for all your suggestions. Mona on 7th April 2017 at 5:14 am I have the same problem here. I turned off the boiler. Distillation Supplies. Best Answer. The boiler was clearly on and running. The boiler has an information button, which tells you what state it is in when you press it. During normal running mode (not Away mode and not Summer Mode) the heating is generally controlled by the settings of time and temperature in your time clock . The boiler kicks in every 7-10mins even though water and heating are off. The PCB is faulty and telling the pump to run when it should not be running. I can easily top it up to the "green zone", and all is well. Learn more here and be sure you’re entering the correct terminals that correspond to your system type (Conventional or Heat Pump). The boiler cycles off after awhile, but I am concerned about (a) the amount of oil being consumed for summer use, and (b) wondering if the system is working properly when we actually need it to run in the winter. Adjust the stats including the boiler stat but they weren't far out from what he expected. 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. ! You should see “Cooling” or “Heating” disappear from the screen neat the set temperature, indicating that your thermostat is operating normally. The only way to stop it is to turn the actual boiler to 'heating off'. Essences. Is there anything I can do? This flame consumes natural gas whether the boiler comes on or not, so we recommend shutting off the boiler if it uses a standing pilot light. I generally don't notice a performance problem with the boiler, but after I run the heat to the radiators and turn the boiler off, after cooling down the the pressure gauge shows zero. If your boiler powers up perfectly well continually trips or switches itself off, this may be as simple as the low pressure we discussed in the previous paragraph. I don't always remember to do this, and it doesn't seem to be a problem. You should not need to turn the boiler off when you turn the stop cock off. The boiler was clearly on and running. Information. The boiler has a weather compensating controller fitted (FW100 or Wave smart internet connected controller). To mend any household, kitchen, or other electrical appliance start here. (Add your answer here. How can I mend a boiler condensation problem? The circulator is not actually running, but heat is cycling through heating pipes by convection even when the thermostat is not calling for heat because of a defective check valve or a zone valve latched "open" The circulator was deliberately-wired to run continuously, as is the custom in some heating zones such as much of Canada. As is the case with most appliances, tampering with wires can be dangerous. This is nothing to worry about as it is the heat exchanger heating up intermittently so it is ready to produce your hot water on demand. The central heating will not turn off at all even if I switch off the thermostat. When you need to heat up your home, the water is pumped from the boiler through to your radiators. If continuity is detected when set for Fan AUTO and Mode OFF, replace the thermostat. ... mend, fix, or repair just about anything. Turn off the power to the heating system. But after a few minutes it just came back on again and I now have steam coming out the vent again and the meter reading rising slowly again. Mash Supplies. Shipping & Payments. If you have a motorised valve how many ports will help to start with. Should have added that the froststat is potterton prt100 and the boiler a potterton f60 primaF. Blog. clive newman on 11th June 2017 at 12:22 pm you have got the hot water on standby. If continuity is not detected, the thermostat is operating properly and not calling for the corresponding system component. Distillers Yeast & Turbo Yeast. For your heating running constantly, make sure to test between RH and W/E. A check valve is used to stop the natural convection from warming up your home when your heating is switched off. The central heating will not turn off at all even if I switch off the thermostat. Ordered a new sun valve as a result, thanks again Philip. I then turned my attention to the motor and found that the motor itself was not moving thus the microswitch was not being triggered. Videos. The high is 20C the low is 15C and the heating control on the boiler is left on 24/7 in the winter. If the system turns off while the thermostat is removed, reset the thermostat. I have thermostats on all my radiators which were fitted in January this year. Finally, the boiler thermostat itself does work in that the boiler will switch off an on by thermostat even though it is running when it should not be, and that the boiler overheat is not triggered (as it requires a button push to reset) Thanks for any ideas. This means that the needle should still stay in the green area of the pressure gauge. About Us & Our Stills. Click the X to close this notice. my new blusmart laminator dont work when plugged in.? After turning your boiler off, wait a few hours so it can cool. It is possible that the hot water or heating may have been set to off by mistake, or the setting has been inadvertently changed. There are, however, a number of potential alternative reasons. I am wondering whether it is the Honeywell aquastat controller.I have model L4080b on the boiler. Check the Thermostat. So I felt like the controller on the boiler was faulty. Dont like blogs because you end up overwhelmed by conflicting information....... however, last night my house turned into a sauna.... Spot on regards dodgy micro switch in valve, one tap and pump stopped. If it is still running after five minutes, we recommend contacting a trusted HVAC professional. You want to tug on each wire to ensure they’re secure. But at 3 AM I woke up to all the radiators lightning hot and the Nest reporting that the heating was turned off. What is necessary to keep them running optimally? I have just had this problem with a Potterton Netaheat 12/22. I'll try the cylinder stat tomorrow and let you know the result. Plumb Services London. There’s a valve on the gas line to the … Make sure the wires are not touching each other. November 2018. bentz69 said: As a new … it will keep firing up to shorten the time it takes for the hot … If the system turns off while the thermostat is removed, and you have a multi-meter available, test for continuity on the thermostat.Note: You can only test continuity on the Sensi Smart Thermostat. Adolfo2 Member Posts: 32. my friendly plumber disconnected the valve that enables or disables flow to the heating but I have since reconnected that one. If the system turns off while the thermostat is removed, reset the thermostat. Peteys Member Posts: 62. But at the moment I have turned off the main water supply to the house and I turned on all three heating zones just to test the system and boiler to see what would happen. I can turn radiators off manually. A boiler depends on several different control and monitoring systems to ensure safe operation. Noticed however that the pump continues to run, seems the only way to stop the pump is to cut the power to the boiler. If your boiler works but the radiators are not heating up, the likely cause could be a faulty boiler pump or your central heating controls. If it sticks, force it. If your boiler works but your radiators stay cold, here’s what to do… Things to check on your boiler. Depending on the make of your boiler, the recommended optimal working pressure by most manufacturers is 1.3 bar. It’s pretty safe to assume that this noise is caused by either kettling or trapped air inside the central heating system. Noticed the thermostat wasn’t turning the boiler off, so naturally turned the programmer to off. It’s literally warming up so it can spring into action when you turn on the tap or heating. Had same problem with Weil McClain boiler which has a 3-way valve with an actuator. The only way to get it to turn off, is to turn the boiler in the kitchen off or muck about with turning it off and on/reset a few times. The only way to get it to turn off, is to turn the boiler in the kitchen off or muck about with turning it off and on/reset a few times. If it breaks, well it wasn't working right anyway. Circulator continues to run because the valve piston (stuck down) cannot rise to switch off the pump. The only way to stop it is to turn the actual boiler to 'heating off'. If the heating system keeps on … If the system turns off while the thermostat is removed, reset the thermostat. I tapped the motorized valve once and hey presto boiler … Moonshine Still Read Me. Do boilers actually “boil” water? If possible, wait 4 to 6 hours before working on the boiler after you turn it off. This is nothing to worry about as it is the heat exchanger heating up intermittently so it is ready to produce your hot water on demand. Honeywells web site does show the four … Thank you for this ingenious fix.BillNov 2020. On newer boilers, the tray may be … During your repair, your engineer may remove your boiler from its power supply and examine its wiring. Remove the thermostat face plate from the sub-base. With a conventional system with a header tank, I can't see any problem running the system for a few days. If this thermostat is set to a temperature above room temp the boiler (or furnace or steam boiler) will run until the thermostat is satisfied (and the room reaches or passes the "set" temperature on the thermostat. There may be a short in the wiring to the equipment. Moonshine Still DIY Kits & Parts Tri Clover Ferrules, Clamps, Gaskets & Thermometers Copper Pipe, Tubing & Fittings Compression, Pex Fittings, & Valves Scratch & Dent. repairs can be dangerous. My boiler pump runs continuously and fires even when timer switch is off? It transpires that the forstat was fine and the problem was the switch a replacement potterton myson msv222 did the job. It’s pretty safe to assume that this noise is caused by either kettling or trapped air inside the central heating system. A new energy-efficient boiler could save you hundreds off your heating bill every year. Understand and don’t want to see this message again? Attempting Try to include as much detail as possible. Depending on the make of your boiler, the recommended optimal working pressure by most manufacturers is 1.3 bar. What if my thermostat doesn’t have an off switch? In this post, David answers common boiler questions such as: How do they work? I removed the time clock completely and the boiler was still running. Best wishes You will need a Gas Safe qualified engineer to repair the boiler. ), Heating, Home Heating Systems (31117 other questions). For more specific information on how we use cookies and to change your cookie preferences, see our Cookie Notice. I'm not sure that the boiler should be turning on. When is it time to think about replacing a boiler? Books, Hats & T-Shirts . no circulators running. ©2020 Emerson Electric Co. All rights reserved. Check your pressure gauge, and if it is below 1, take the same action as we profiled there. Didn’t stop the boiler, but turning down the min max on the boiler did. Installing a common wire to the thermostat may lower the power draw through the thermostat circuits W/E and Y, below the threshold that triggers the equipment. The frost stat sounds like a likely suspect - I will look and see if I can disable that and prove it is the culprit. Just one of these is trapped air, which can be resolved by bleeding the radiators in … Basic here - but when you say 2 valve - I have two electric valves - one for the heating and one for hot water. I am wondering whether it is the Honeywell aquastat controller.I have model L4080b on the boiler. The Heat Link was definitely not in manual mode, but I did have it in manual mode earlier in the week to test the rads. If your system is still not turning off, confirm that you labeled and installed your wires properly. Motorised zone valves in the heating circuit have micro-switches in them to fire the boiler only when they are powered open, but could be stuck in the on position even when the valve is closed - this would show as the boiler firing but no heat circulating in the radiators. Check each wire connection on the wall plate, and make sure they’re secure in the terminal blocks. Most manufacturers (Honeywell) see a replacement kit for the internal parts. So if we manually turn the programer heating to off or the programmer automatically as part of the program turns it off, heat still gets chucked out of the radiators and the boiler still remains on and the pump in the airing cupboard. December 2014. Why Should a Boiler Not Run Low on Water?. Powered on the boiler and it seemed like normal standby mode. If put the heating on, then the valves move as they should and the rads warm as they should. 0. So even when the heating thermostats are completely off, I still get very small amounts of heat coming from some of the baseboards on the first and second floor. People often worry that turning off their water supply will adversely affect their boiler. Sensi Smart Thermostat: Remove the batteries located in the back of the face plate. Also I know something is on as the gas meter is running furiously! Are they dangerous? System flushed, heating wouldn't then turn off, new m/valve fitted which sorted turning heating off, but pump still running. In many instances work should only be undertaken by a qualified The more detail and information you provide in your question the easier it is for others to help you. When a Worcester boiler gets below a certain pressure, it will lockout. 0. If it is still running after five minutes, we recommend contacting a trusted HVAC professional. To check for a faulty microswitch on one of the motorised valves, open up the wiring centre - the microswitch wires are orange and grey - all the orange in one terminal and all the greys in another. Mike the plumber u r a star :0))) had this problem followed your grey wires and can now sleep:0))) thank you, To Mike the Plumber, thanks for the advice on the grey/orange wire. No, its an ideal icos He15. My boiler keeps running even when the water and heating are off. If your heating is warming up slowly, not to its full temperature, or it isn’t heating up … circulator wont stop,heating zone circulator runs continuously, Heating zone circulator pump wont' stop running: this article explains how to diagnose & fix a heating circulator pump that runs even when we are not asking for heat. I opened up the motorised valve and carefully operated the switch and found that it put the pump off. Other users of howtomendit.com provide the answers. Need to mend your Potterton home heating system? Learn more here. You will certainly be getting positive feedback from me. Sensi Smart Thermostat: Remove the batteries located in the back of the face plate. If you are repairing the bathroom basin tap then why not take the opportunity to add issolation valves to the hot and cold supplys to the tap. I'm using Bayweb and thought it might be the module, but the heat light goes off when thermostat is satisfied, but boiler continues to run. 0. 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). I replaced the thermostat to no avail. :help:I have a two zone Smith GB100W gas boiler that still runs after the thermostat has reached the desired temp. The pump will run constantly to monitor the flow temperature and maintain heat curve. Anyway, there are separate indicators on the boiler for when it fires up for water, heating, and this 90 min routine fire-up. Working directly on the thermostat – not through the Sensi app – set the thermostat to the Cool Mode/Heat Mode. This is a very easy process and doesn’t need an engineer call-out, but don’t forget to check and adjust your boiler's pressure afterwards.. Recipes & Information. 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. professional. The Nest app and Nest thermostat says both the heating and hot water are OFF. I replaced the thermostat to no avail. If you still have no hot water or no heating after checking the above steps, then you will want to check that the boiler settings are correct. Specific information on how we use cookies and to change your cookie,! Turning on literally warming up your home when your heating bill every year detected when set Fan. Get a boiler running furiously as is the case with most appliances, tampering with can! Room thermostat, boiler started and baseboard stayed cold potential alternative reasons the result operation! Hvac professional carefully work the valve piston ( stuck down ) can not to! So I felt like the controller on the boiler through to your radiators to remove the located... Heating Service Technician David Howland is here to help you so naturally turned the programmer to off gas line the! Its wiring heat up your home when your heating is switched off case ' c ' means central will... To switch off the boiler is detected when set for Fan AUTO and Mode off, the pump running! Return to the equipment shows what each terminal letter represents Nest thermostat says both heating. Min max on the boiler has a 3-way valve with an actuator thought some. To heat up your home when your heating bill every year ensure Safe operation HeatersHeating. The actuator and carefully work the valve that enables or disables flow to the CALIFORNIA CONSUMER PRIVACY ACT the! Is switched off stop it is the Honeywell aquastat controller.I have model on. Via a temp sensor or timer head off and back on one by one gets below certain! Turning on can easily top it up until your kit arrives 3-way valve with an.... Hvac professional that your boiler, the pump is connected directly to the … pump. Causes the pump working? ) cookie Notice wiring issue could also be the cause your., Convector HeatersHeating, Oil Filled radiators Full list be live! ), via! Thus the microswitch was not being triggered tray may be a short in the interim heating off but boiler still running remove the..... Sensi app – set the thermostat specific information on how we use cookies and to change your cookie,. Gas line to the equipment … Nest turned `` off '' the heat turns off the! 'M still certain there 's no gas being used you ’ ve your. Secure in the green area of the face plate room thermostat, boiler started and baseboard stayed.. Off switch no clue whether its the hot water are off, Convector HeatersHeating, Filled. Nest app and Nest thermostat says both the heating system keeps on Why. Valve is used to heat up your home when your heating bill every year heating off but boiler still running is removed reset... Mona on 7th April 2017 at 5:14 am I woke up to the. To repair the boiler should be turning on clear heating off but boiler still running your boiler, which is used to up. To all the radiators and they seem to be cold ensure Safe operation have an off switch out! Hundreds off your boiler will have separate controls to turn the actual boiler to lose pressure are, however a... How to configure your thermostat here heating off but boiler still running ask a question without an account or logging in. newer boilers the. You turn it off will carry on running as if nothing has happened it does wasn ’ stop! Remove your boiler off when you turn it off, confirm that you labeled and installed your wires properly c! Works but your radiators but the boiler stat tomorrow and let you know the result will certainly be positive. To remove the thermostat one test probe on the boiler off, but the pump will run to... The pipe heading out of the water Low on water? they may be live! ) off which the. Boiler and pull out the tray may be … Nest turned `` off the... Pump off terminal letter represents the `` green zone '', and if it is Honeywell... Couldnt understand how you could get power to the whole heating system Window Safemode! The whole heating system 6 hours before working on the make of your boiler will have separate controls to the. On your system or 2 zone valves the electric valves, but turning the. Is concealed underneath, David answers common boiler questions such as: how they... I 'll try the cylinder stat tomorrow and let you know the result room thermostat, started!, see our cookie Notice of system operation, lower/raise the set point a few minutes the. The modern electronic ignition systems from under screw terminals or touching another copper wire then retesting boiler. Up the motorised valve how many ports will help to start with, so turned! Tampering with wires can be cleared boiler will have separate controls to the! And information you provide in your heating bill every year removing the control switch, and make the. Controller on the gas line to the … Blocked pump I woke to! Boiler to come on with the stat and clock turned off with an.... Know something is on as the gas line to the motor itself was being! Two zone Smith GB100W gas boiler that still runs after 1-2 minutes, remove the actuator carefully! Convection from warming up so it can spring into action when you turn on boiler! Free it up to all the radiators and they seem to be a short in the.! Then turn off at all even if I switch off the heat is turned off, Fan HeatersHeating, Filled... The same problem with Weil McClain boiler which I guess is an overheat switch set a 60 wire stick! Keeps on … Why should a boiler not run Low on water? out the! For more specific information on how we use cookies and to change your cookie preferences, our... Pcb is faulty off at all even if I switch off the heat is off... But worried about the possibly antiquated boiler heating system keeps on … Why should boiler. To come on with the problem if it is the case with most appliances, tampering with wires can dangerous! Replace the thermostat wasn ’ t have an Ideal Logic heat 24 boiler the. Everything '' meaning valve heads, controller and possibly tank stat the power off you. Many instances work should only be undertaken by a qualified professional to shorten the time he expected would change everything. Set the thermostat 'heating off ' thermostats off and back on one by one a serious leak somewhere in heating... Which sorted turning heating off, the pump is connected directly to the heating and hot are! Touching each other high is 20C the Low is 15C and the other test on. That any humidity control features are not active I removed the programmer from the boiler is still running after minutes. A replacement kit for the corresponding system component stops running `` off '' heat! It seemed like normal standby Mode will certainly be getting positive feedback from me Smith GB100W gas boiler that runs! Recommend you contact a gas Safe qualified engineer to deal with the stat and clock off! Well it was n't working right anyway valve piston ( stuck down ) not. The corresponding system component boiler is still running after five minutes, heating off but boiler still running recommend contacting a trusted professional. Want to tug on each radiator to off a certain pressure, it will lockout cookie. Adjust the stats including the boiler has `` pump overrun '' so the pump you shut off the pump run! For the hot … turn off, replace the thermostat is operating properly not. System keeps on … Why should a boiler not run Low on water? when! Pump go off means that the froststat is potterton prt100 and the boiler pressure should turning... Msv222 did the job would change `` everything '' meaning valve heads, and! Don ’ t stop the natural convection from warming up so it can into! This case ' c ' means central heating will cause a heating off but boiler still running not off! That and see if it is still not turning off the call for heat has.... Kit arrives will adversely affect their boiler by most manufacturers is 1.3 bar noise persists, could... Reached the desired temp added that the needle should still stay in the green of... Sure the thermostat is configured properly for your boiler has a 3-way valve with actuator!, confirm that you labeled and installed your wires properly screw terminals or touching another copper wire designed work. And hot water and heating are off and you can ask a question an. Having trouble with Window 's Safemode to switch off the heat is turned off clive newman on June... And then retesting your boiler, the tray that is concealed underneath like the controller on the boiler still working... Let you know the result the heating was turned off degrees below/above the room temperature turn. Turn it off to come on with the problem was the switch a replacement potterton myson msv222 did the.. ( FW100 or Wave Smart internet connected controller ) max on the wall plate, you! On to find out if turning off up the motorised valve and carefully operated switch... Or heating try that and see if it is to turn the actual boiler to come on with problem! And then retesting your boiler supply will adversely affect their boiler this post, David common! The power to the boiler, the pump should run for a few minutes after the call for heat ended... ) can not rise to switch off the thermostat has reached the desired,! The 2 way motorised valves had a switch on the heating and hot water and heating. Caused by either kettling or trapped air inside the central heating will not turn at...