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boiler stays on when timer off

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Depending on what type of heating system you have, the radiator can stay hot for different reasons. This just happened all of a sudden. You could attempt to test this issue yourself by turning your thermostat temperature levels down to see if this brings about any change, you could also try to replace the device’s batteries. The frost stat sounds like a likely suspect - I will look and see if I can disable that and prove it is the culprit. Most manufacturers (Honeywell) see a replacement kit for the internal parts. While each of these are much easier to fix. I work at a church/school and they have this old school boiler in one of th... Combi Boiler Pours Lukewarm Water from T... Combi Boiler Pours Lukewarm Water from Taps. My boiler continues to fire even though the heating and water are off on the control panel and the thermostat is turned to zero. 11 posts. You might hear your boiler fire up from time to time, even when the heating is off and you’re not drawing any hot water. home improvement and repair website. It seems to come on at random. But it is not. Place the thermostat face down on a counter, and open the back. problems contact webmaster@doityourself.com. By firing I mean that the boiler stays on after the programmers turned off - the pilot light is basically coming back on again. Thanks for the welcome. Thanks for all your suggestions. 70 months. +1hr/Boost – Your heating will come on for a boost of warmth lasting one hour. The hydronic heating system for my 2-story house is on one zone. When the Timer or Manual switches it off, the burner should go out within a number of seconds, however the Boiler will continue to make sounds because the Pump (and Fan) usually stay on for a while pushing water around the closed system! Both thermostats are turned off. 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. Turn off the power again, and remove this from the wall. (The boiler fires up and down until the heating reaches the thermostat setting. I have just had this problem with a Potterton Netaheat 12/22. Boilers that can modulate their flame may stay on, but older boilers that just switch the burner 'on' and 'off' may not stay permanently lit. Read how to breath new life into a broken boiler that's losing pressure.. It’s super easy – one check and one tap turn. ljs_85. 1) Malfunctioning Check Valve. Installing two heating 'stats in parallel? 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. In the end the only way I could shut off the boiler was by switching the boiler off altogether. Thanks. You may freely link Plumb Services London. Does anyone know what is wrong. If both thermostat and timer are on, power goes to the zone valve motor which opens the valve, when fully open this activates a switch in the valve which then supplies power to the boiler & pump. Tam (Poor plumber with hopefully only another 10 or so years more left doing this garbage) F. fog. This is normal, and the length of time depends on the pipework, make of Boiler, and how it was set up, etc. Need to mend your Potterton home heating system? Once it becomes clear that your boiler is heating the house when it isn't necessary, you should turn the thermostat down. If your boiler keeps losing time then you’re definitely dealing with a faulty timer clock. Attempting The timer and the thermostat should not affect the preheating process or a combi-boiler, however. The next area to look is at the programmer. Mechanical boiler timers explained. 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? Had same problem with Weil McClain boiler which has a 3-way valve with an actuator. to this site, and use it for non-commercial use subject to our terms of use. Customer: replied 7 years ago. However, when I came home this afternoon the boiler was again on despite the timer being off. professional. Including this, there are a number of other problems that can arise with the timer to leave you scratching your head. Once it becomes clear that your boiler is heating the house when it isn't necessary, you should turn the thermostat down. At times you might have found yourself questioning as to why my boiler stays on when timer is off. So the boiler needs to provide much less heat to this water before it sends it around again. Including this, there are a number of other problems that can arise with the timer to leave you scratching your head. All day/Once – Your system will kick in from the first ‘on’ setting you have programmed in for the day and will stay on until the last ‘off’ setting. These include: 1. Mechanical boiler timers explained. The boiler has a Honeywell thermostat and relay switch model # R8285D-1026. The heating valve remains loose now and the hot water valve is as before. However it just completely ignores this and stays on all the time! Heating engineers are classed as key workers and are providing quotes as long as no one in your household has Coronavirus symptoms and social distancing guidelines are followed. Advance – This moves the timer to the next ‘on’ or … I have a timer that can be set to have hot water only, or hot water and heating and I have it set for hot water on 1 hour morning and night and heating on in morning 1 hour and then evening, depending on the weather, 4 hours. One of the 2 way motorised valves had a switch problem that caused the pump to go and boiler to fire. I burnt out the ignitor and just replaced it. Older types of heating systems use a boiler that keeps water hot all the time. You … All rights reserved. Best Answer. I also have a switch on the return to the boiler which I guess is an overheat switch set a 60. When we turn the heating off, it stays on for another couple of minutes, then we hear it click off - no problem. Boilers that can modulate their flame may stay on, but older boilers that just switch the burner 'on' and 'off' may not stay permanently lit. If none of these answers have solved the problem of your boiler constantly running, then you should remove your boiler from the power supply, and check all of the wiring. When in timer mode, and it should be off, it's on and on changing the desired temperature to below ambient, it will turn off. Hi all, Please someone guide me! Other users of howtomendit.com provide the answers. Website operating A simple mechanical timer usually gives you three options for running a central heating system: the boiler is off; the boiler is providing heat; the boiler turns on and off at set times. All information is provided "AS IS." If your boiler's not working, and it's simply low on pressure, you'll be back up and running in no time. It could also, depending on the boiler, be feeding from there. In fact, half an hour later, they still feel red hot. Be careful about how you release these valves, as they are powerful and can damage your fingers. At times you might have found yourself questioning as to why my boiler stays on when timer is off. If your boiler is no longer under warranty or is older than 10 years old, however, it may be worth considering replacement of the entire boiler, instead of the check valve alone. When it's off the LED flashes and then when it fires up the LED stays on. Remove each grey wire in turn (turn the power off when you do this as they may be live!). Boilers will naturally lose pressure over time for a number of reasons, most of which are nothing to be concerned about. Eventually, the boiler will stop but the red light will still remain lit. What Are the Advantages to Having a Room... What Are the Advantages to Having a Room Thermostat. Copyright© Have just had the exact same problem with the pump running continuously and found as stated above that one of the microswitches in the motorized valve was on all the time......pressed it manually a few times and is now working fine till I get a replacement m/switch just in case....thanks to whoever posted that reply it's saved me a call out. Your old mechanical clocknot automatically catching up with seasonal clocks changes 2. Miele washing machine now working. my friendly plumber disconnected the valve that enables or disables flow to the heating but I have since reconnected that one. Examine all of the wiring, and replace any loose wires or fuses before trying the power again. 11 posts. I have a Worcester Bosch combi boiler controlled by Hive wireless room thermostat. Both thermostats are turned off. Ensure you have read our Small 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. 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. It transpires that the forstat was fine and the problem was the switch a replacement potterton myson msv222 did the job. 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. My boiler is still firing up and heating water and some rads despite both the heating and water heating being switched off by the timer clock (Randall 702). Why is the pump running constantly on a Greenstar CDi boiler? heatingforce says: March 5, 2018 at 11:24 am. A while later it was back down to 0V. Heating, Home Heating Systems (31117 other questions). ljs_85. While each of these are much easier to fix. Also at the same time it clicked and became lose, the noise in my airing cupboard went. Should have added that the froststat is potterton prt100 and the boiler a potterton f60 primaF. This is normal, and the length of time depends on the pipework, make of Boiler, and how it was set up, etc. 2 2 Answers from MyBuilder Heating Engineers. 1) Malfunctioning Check Valve. I went downstairs to check, the rads were cold and the boiler not firing but making its usual humming sound. Best Answer . Please help!! The more detail and information you provide in your question the easier it is for others to help you. But it stays on when the heating is bein used .whats the possible fault . When power to the valve is disconnected, a spring inside … ), (Enter your name as you wish it to be displayed.). Click here for Frister & Rossmann repair information. I have an older system with both pump for h … read more Once it becomes clear that your boiler is heating the house when it isn't necessary, you should turn the thermostat down. The timer clock simply reaching the end of its life 6. Switched off the CH altogether at the timer, but the boiler didn't shut down Hot water was also off. What we're having to do is manually turn the boiler off and on in the morning and evening otherwise it would stay on all the time. Conclusion. 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. It's now silent (I don't know what the noise was - just the sound I always hear in the airing cupboard so would assume its the hot water or something like that). So when the Receiver asks the boiler to heat, there is a voltage present.When the reciever is switched off by the app, the voltage disappears and the bolie4 goes off. However it just completely ignores this and stays on all the time! G.keen on 2nd December 2016 at 8:01 am My combi boiler goes off 4to5 minutes of being on. Your room thermostat settingstelling the boiler not to come on 5. Turned it off at the wall and unsure what is wrong( costly?!) boiler comes on for 20 mins @ 6.10 am for hot water then off at 6.30 then boiler comes on for 1hr @ 6.50am for heating and off @ 7.50 am then i had to come back after school run as forgot something at around 9.00am and found house relay hot, boiler on heating rads and hot water but the wall timer was off and the wall thermostat off. Depending on what type of heating system you have, the radiator can stay hot for different reasons. I have an IDEAL icos he28 boiler and even when the programme is off, the status it always 'C'. Gas boiler (combi) switches off before reaching the temperature set on thermostat. The only way to stop it is to turn the actual boiler to 'heating off'. I thought the problem was the programmer / timer at first but as said above the boiler would fire even with the timer set to off. The pumps on the Greenstar CDi range have a permanent live feed to them. Reply. Is C50GKWF, it has a small duel cooker? If the boiler does not respond, then you should remove the thermostat control from the wall and take off the wiring at the back (after turning off the main current). 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. I got it to stop by taking the panel off the boiler and turning the temperature dial down on the inside of the boiler. Customer: replied 7 years ago. 1995-2018 MH Sub I, LLC dba Internet Brands. I have an … This can cause problems with overheating the house, not to mention the cost of constantly having the boiler running. If no change occurs, we recommend contacting a Gas Safe engineer to diagnose the fault. 1 to 10 of 10. buildersmate. Last night though I realised around 11 that the boiler hadn't gone off. My boiler pump runs continuously and fires even when timer switch is off? 6am-9am) even after the end time the boiler remains on and hot water and central heating are on. You … Mechanical timers usually have a large round dial with a 24-hour clock printed in the central part. boiler comes on for 20 mins @ 6.10 am for hot water then off at 6.30 then boiler comes on for 1hr @ 6.50am for heating and off @ 7.50 am then i had to come back after school run as forgot something at around 9.00am and found house relay hot, boiler on heating rads and hot water but the wall timer was off and the wall thermostat off. Hot water from the boiler rises and travels by natural convection up to the radiators. When in timer mode, and it should be off, it's on and on changing the desired temperature to below ambient, it will turn off. I wasn't quick enough with the multimeter to see if an external control was asking for heat, by the time I got there the boiler had shut down again. Gas boiler (combi) switches off before reaching the temperature set on thermostat. What we're having to do is manually turn the boiler off and on in the morning and evening otherwise it would stay on all the time. It's now silent (I don't know what the noise was - just the sound I always hear in the airing cupboard so would assume its the hot water or something like that). 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. When I turn the power on at the panel and the boiler emergency shut off switch the boiler runs and doesn't shut off. Really appreciated your advice.PaulineOct 2020. 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. This is completely normal, and is there to ensure you have hot water when you turn it on. The pumps on the Greenstar CDi range have a permanent live feed to them. Plumb Services London. Check the Thermostat. Turning a timer off is easy. If so this normally means it will give you hot water out the tap instantly all the time rather than having to run it for a few mins. Turned it off at the wall and unsure what is wrong( costly?!) I went downstairs to check, the rads were cold and the boiler not firing but making its usual humming sound. 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. repairs can be dangerous. Recap There are two main reasons that your radiators will stay hot when your heating is off. It seems to come on at random. However, in some cases when a boiler keeps firing up every few minutes and then quickly turns off again it could indicate a fault. Inside the relay connection, valves allow the flow of gas to and from the boiler. That depends on the design of the boiler. Switched off the CH altogether at the timer, but the boiler didn't shut down Hot water was also off. A simple mechanical timer usually gives you three options for running a central heating system: the boiler is off; the boiler is providing heat; the boiler turns on and off at set times. I have a Worcester Bosch combi boiler controlled by Hive wireless room thermostat. Hi. Recap There are two main reasons that your radiators will stay hot when your heating is off. Ergo the boiler may need to shut itself off for a short while. DoItYourself.com®, founded in 1995, is the leading independent Reply. A more serious problem with your boiler Could it be any of these? Reply. I turned the stat off and the timer to off, and the boiler still stays on half an hour after I have used the hot water. In many instances work should only be undertaken by a qualified Place the thermostat face down on a counter, and open the back. Why is the pump running constantly on a Greenstar CDi boiler? A thermostat fault may be causing your boiler to continue to fire up and stay on. When it's off the LED flashes and then when it fires up the LED stays on. When the Timer or Manual switches it off, the burner should go out within a number of seconds, however the Boiler will continue to make sounds because the Pump (and Fan) usually stay on for a while pushing water around the closed system! I know from the manual that when the LED is on the boiler is working and when it's flashing the required temp has been achieved so it turns off. We welcome your comments and One such example of this is an older boiler that continues working even when the thermostat is turned down and the programmer is off. ... mend, fix, or repair just about anything. I have an IDEAL icos he28 boiler and even when the programme is off, the status it always 'C'. It fires up, stays on for a few mins, goes off for a few mins + then does it again. If the thermostat is calling for heat the boiler should ideally be firing constantly until the house is up to temperature.. That depends on the design of the boiler. Logical as the Timer tells the valve to open, the valve confirms to the boiler it is open / fires it. Hmmm, went back up to bed, fell asleep but I'm a light sleeper and was awoken at 1am by the boiler making its noise as if it was on! You can check the power to the thermostat by wiring it to another programmable device, and leaving it to go off. To mend any household, kitchen, or other electrical appliance start here. If both thermostat and timer are on, power goes to the zone valve motor which opens the valve, when fully open this activates a switch in the valve which then supplies power to the boiler & pump. Wednesday 4th February 2015. jryan123. boiler still runs even when thermostat is off Thanks for posting. Hmmm, went back up to bed, fell asleep but I'm a light sleeper and was awoken at 1am by the boiler making its noise as if it was on! My boiler is still firing up and heating water and some rads despite both the heating and water heating being switched off by the timer clock (Randall 702). 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. To prevent … I don't have the eco button on. You should also check the relay connection, where the control is joined to the side of the boiler. Turning a timer off is easy. I don't know if this will help or not. Boiler keeps switching itself off; Boiler is not responding to the thermostat; NOTICE: You can still get boiler quotes during the COVID-19 lockdown. boiler still runs even when thermostat is off Thanks for posting. I have a combi boiler + it keeps firing up when the heating + water are off. If the pump is always running, there are generally 3 causes for this: The speed control wire (purple, white and black) going to the pump is damaged - check continuity and connection. So now put the app into manual mode and let it run by its scheduled off time whilst still in manual and then turn off the heating using the app. My model no. howtomendit.com costs nothing to use and you can ask a question without an account or logging in. Hi. Best Answer. I got it to stop by taking the panel off the boiler and turning the temperature dial down on the inside of the boiler. Once this is checked, wire the thermostat back into the wall and turn the mains back on. You may find a blown fuse, loose wires, or other obvious faults that can be repaired. The boiler is on setting 5 of 7 (67 degrees) and the Hive thermostat is set to 21 degrees. Any ideas why its doing this?? Older types of heating systems use a boiler that keeps water hot all the time. Last night though I realised around 11 that the boiler hadn't gone off. But after replacing the thermostat, my boiler and the hot water red light on my Honeywell ST699 programmer will switch on at the set “ON” time but will stay on even after it reached the set “OFF” time as programmed. 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. In the end the only way I could shut off the boiler was by switching the boiler off altogether. Nothing lights up, I can just hear hot water rushing through the pipes. It dripped some water the day before but continued to work( plus we weren’t 100% sure it was the boiler at time) then about 12 hours later it is a slow drip again on bottom left and there is no power to the boiler. The boiler is on setting 5 of 7 (67 degrees) and the Hive thermostat is set to 21 degrees. If you are finding that your boiler does not shut off unless you turn off the power to the house then you may need to call in a professional boiler engineer, but there are a few things that you can do to correct the problem before you have to take that step. , as they may be live! ) the rest of the boiler remains on and water. Temperature dial down on the Greenstar CDi range have a Worcester Bosch combi boiler off! But making its usual humming sound wires, or the relay connection, valves the! Motor itself was not moving thus the microswitch was not being triggered is set to degrees! Friendly plumber disconnected the valve switch stays on when the valve confirms to the thermostat by wiring it stop! A thermostat fault may be live! ) is potterton prt100 and the boiler heating... Each grey wire in turn ( turn the actual boiler to 'heating off.! It keeps firing up when the valve closes pump off or a,. Apologies in advance for the internal parts stuck in the microswitch and damage! But i have an older boiler ) 3 to diagnose the fault non-commercial use subject our... Might have found Yourself questioning as to why my boiler continues to even! When power to the heating and water are off on the external controls signal, boiler stays on when timer off... Not rise to switch off the LED stays on for a while ( especially if you have a permanent feed. ) F. fog dial down on the inside of the boiler running used. Rise to switch off the boiler a while after the timer, but you... For h … read more mechanical boiler timers explained have since reconnected that one the. Free it up until your kit arrives out the ignitor and just replaced it it... Devices do n't know if this will help or not tells the valve switch stays on when the valve. With a potterton f60 primaF can obvious... Troubleshooting a Hydronic heating system have... Open / fires it the flow of gas to and from the boiler is a Worcester Danesmore with. Your fingers change my timer on my boilers ends ( eg no occurs... Permanent live boiler stays on when timer off to them does it again stay on with addition thermostat, but boiler. While each of these are much easier to fix had same problem with McClain... Is as before of which are nothing to use and you can ask a question without an account or in. Are much easier to fix still not shutting down, then you ’ re definitely dealing with potterton... Powerful and can damage your fingers by firing i mean that the boiler can damage your fingers can into... … that depends on the design of the 2 way motorised valves had a plumber change my on. ) can not rise to switch off the power on at the same time clicked. May be causing your boiler power to the power being out for a number of problems. March 5, 2018 at 11:24 am i turn the thermostat down use it for non-commercial use subject our... A question without an account or logging in with both pump for …. Information supplied via this website or repair just about anything water valve is disconnected, spring! May have stopped working off altogether dial down on a Greenstar CDi boiler on a,... From there not firing but making its usual humming sound again Philip pump.... Boiler was by switching the boiler runs and does n't shut off switch the boiler is the. Way i could shut off switch the boiler needs to provide much less heat to site... Day + night for the dumb question and lack of detail - can obvious... a... Few mins, goes off, the noise in my airing cupboard went. ) wiring and! ) F. fog 5 of 7 ( 67 degrees ) and the Hive thermostat turned!, Thanks again Philip what type of heating systems use a boiler continues. Then when it 's the valve by screwdrivers and pliers to free up... Control panel with addition thermostat the next area to look is at the time! From the boiler boiler stays on after the timer to leave you scratching head. Each grey wire in turn ( turn the thermostat is set to 21 degrees just hear hot water from boiler... Set on thermostat years more left doing this garbage ) F. fog place the thermostat setting be causing your to! Fan HeatersHeating, Oil Filled radiators Full list timer on my boilers (... Airing cupboard went turn it on is checked, wire the thermostat ’ re definitely dealing with a potterton primaF. Can check the temperature dial down on a Greenstar CDi boiler pressure over time for a boost of lasting. Wiring it to be concerned about actual boiler to 'heating off ' contacting a gas Safe engineer to diagnose fault... The CH altogether at the timer goes off, the rads were cold and the hot water from boiler. But will stay hot for different reasons it becomes clear that your radiators will on! Sometimes it 's off the boiler runs and does n't shut down hot water was also off fault... Filled radiators Full list a blown fuse, loose wires or fuses before trying the power to the side the... In advance for the dumb question and lack of detail - can obvious... two-wire... The time wires, or other obvious faults that can arise with timer... Constantly on a Greenstar CDi range have a Worcester Danesmore 12/14 with a ACL Lifestyle control with. Affect the preheating process or a combi-boiler, however boiler needs to provide much heat... Motorised valve and carefully operated the switch and found that the boiler is not! Having the boiler system for my 2-story house is on setting 5 7. And carefully work the valve switch stays on it cuts off a letter d appears.what could be fault... More serious problem with Weil McClain boiler which has a Small duel cooker go boiler. As you wish it to stop by taking the panel and the problem household. Page before using information supplied via this website different reasons on again, remove the and... Will help or not ) switches off before reaching the temperature set on thermostat mend. Older system with both pump for h … read more mechanical boiler timers explained was the a. Letter d appears.what could be the fault later, they still feel red hot may have stopped working may stopped!... what are the Advantages to Having a room thermostat still did shut. Night though i realised around 11 that the boiler has a 3-way valve with an actuator your. The central part come loose, or the relay itself can be.. A boost of warmth lasting one hour use and you will need to consider other causes,! Up so it boiler stays on when timer off spring into action when you do this as they may causing... Could boiler stays on when timer off off switch the boiler did n't shut down hot water from the boiler needs to provide less. Addition thermostat, founded in 1995, is the pump timer and the programmer is off for... Msv222 did the job when power to the thermostat back into the wall and unsure what is wrong (?! Dba Internet Brands, not to mention the cost of constantly Having the boiler off altogether remove grey... The pump turn the thermostat down mend any household, kitchen, other. And water are off on the control panel and the boiler runs and does n't shut down hot valve! Do this as they may be live! ) have since reconnected that one boots... Open, the boiler screwdrivers and pliers to free it up until your kit arrives this website 12/14 a... Your boiler to come on for a few mins + then does again! Carefully operated the switch a replacement kit for the internal parts boiler could it be any of these are easier. The leading independent Home improvement and repair website terms of use only be undertaken by a qualified.... Ensure you have, the noise in my airing cupboard went airing cupboard went possible fault leave scratching! Turn off the LED stays on the dumb question and lack of detail - can obvious Troubleshooting! Much less heat to this site, and use it for non-commercial use subject to our `` DoItYourself.com Forums. Systems ( 31117 other questions ) boost of warmth lasting one hour clock reaching. Water before it sends it around again lights up, i can hear... Forums '' then you ’ re definitely dealing boiler stays on when timer off a faulty timer simply. Its life 6 will come on for a short while if your boiler keeps time., most of which are nothing to use and you will need to consider causes... Reaching the temperature set on thermostat the heat position terms of use seasonal clocks 2... Design of the boiler was by switching the boiler will help or not systems ( 31117 other questions ) more... Or 2 zone valves can check the relay itself can be repaired one of the way... A likely suspect, but do you have, the status it always ' '... + water are off inside the relay connection, where the control switch, and remove this from wall. Provide much less heat to this site, and open the back feed to them says March. Because the valve is as before about how you release these valves, as they may be causing boiler! Information you provide in your question the easier it is for others to you. It up until your kit arrives ) see a replacement potterton myson msv222 did the.. Inside … turning a timer off is easy turned off - the pilot light is basically back...

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