You should also check the temperature of the water. 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. 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. Nothing lights up, I can just hear hot water rushing through the pipes. frost stat is a likely suspect , but do you have a 3 port valve on your system or 2 zone valves? To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. 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. 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. 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. Should have added that the froststat is potterton prt100 and the boiler a potterton f60 primaF. Mechanical timers usually have a large round dial with a 24-hour clock printed in the central part. 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). 1) Malfunctioning Check Valve. Print page before using information supplied via this website. The pumps on the Greenstar CDi range have a permanent live feed to them. I also have a switch on the return to the boiler which I guess is an overheat switch set a 60. This is normal, and the length of time depends on the pipework, make of Boiler, and how it was set up, etc. But it stays on when the heating is bein used .whats the possible fault . Turned it off at the wall and unsure what is wrong( costly?!) 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. If the two devices don't match, try removing the control switch, and then retesting your boiler. It seems to come on at random. At times you might have found yourself questioning as to why my boiler stays on when timer is off. Try to include as much detail as possible. I have an older system with both pump for h … read more Turning a timer off is easy. Both thermostats are turned off. The radiators are hot. 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. 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? I recently purchased a new home. Why is the pump running constantly on a Greenstar CDi boiler? 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. In fact, half an hour later, they still feel red hot. You may find a blown fuse, loose wires, or other obvious faults that can be repaired. 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. 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. 70 months. 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. It is called short cycling and is likely to make your heating bills more expensive and, in the long term, will cause damage to the boiler. The next area to look is at the programmer. Website operating Attempting 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. Reply. The only way to stop it is to turn the actual boiler to 'heating off'. heatingforce says: March 5, 2018 at 11:24 am. Had same problem with Weil McClain boiler which has a 3-way valve with an actuator. Advance – This moves the timer to the next ‘on’ or … G.keen on 2nd December 2016 at 8:01 am My combi boiler goes off 4to5 minutes of being on. Thanks for all your suggestions. 2 2 Answers from MyBuilder Heating Engineers. Heating, Home Heating Systems (31117 other questions). In many instances work should only be undertaken by a qualified A while later it was back down to 0V. 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. Update: have tried the on off button at the mains. The radiators are hot. Wednesday 4th February 2015. A thermostat fault may be causing your boiler to continue to fire up and stay on. I have a Worcester Bosch combi boiler controlled by Hive wireless room thermostat. 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. Really appreciated your advice.PaulineOct 2020. 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. 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. However it just completely ignores this and stays on all the time! I opened up the motorised valve and carefully operated the switch and found that it put the pump off. At times you might have found yourself questioning as to why my boiler stays on when timer is off. That depends on the design of the boiler. If, upon examination, the valves seem to be stuck, you should call in a professional to remove the system and fix the problem. 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). 11 posts. ), (Enter your name as you wish it to be displayed.). Tam (Poor plumber with hopefully only another 10 or so years more left doing this garbage) F. fog. Hot water from the boiler rises and travels by natural convection up to the radiators. If your boiler keeps losing time then you’re definitely dealing with a faulty timer clock. 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. Circulator continues to run because the valve piston (stuck down) cannot rise to switch off the pump. Best Answer. 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. Customer: replied 7 years ago. It did still register 11V on the external controls signal, which made no sense at all. 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. jryan123. The hydronic heating system for my 2-story house is on one zone. American Standard Furnace 6 red flashes Code. Mechanical boiler timers explained. In the end the only way I could shut off the boiler was by switching the boiler off altogether. 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. It has been doing it constantly day + night for the past couple of days. Conclusion. Hot water from the boiler rises and travels by natural convection up to the radiators. A while after the timer goes off, the boiler boots up again. submitted to our "DoItYourself.com Community Forums". +1hr/Boost – Your heating will come on for a boost of warmth lasting one hour. Ordered a new sun valve as a result, thanks again Philip. I don't know if this will help or not. Thanks for the welcome. Depending on what type of heating system you have, the radiator can stay hot for different reasons. but will stay on when the heating is on .when it cuts off a letter d appears.what could be the fault. 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. Turning a timer off is easy. 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. You may freely link You can check the power to the thermostat by wiring it to another programmable device, and leaving it to go off. Reply. Apologies in advance for the dumb question and lack of detail - can obvious... Troubleshooting two-wire thermostat system. 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. 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. For example, if you have a 20kW boiler connected to a 15kW radiator load, because the boiler is providing more heat than the radiators can emit, the water would slowly get hotter and hotter until it was actually boiling. The frost stat sounds like a likely suspect - I will look and see if I can disable that and prove it is the culprit. My boiler pump runs continuously and fires even when timer switch is off? Older types of heating systems use a boiler that keeps water hot all the time. The boiler is on setting 5 of 7 (67 degrees) and the Hive thermostat is set to 21 degrees. Mechanical boiler timers explained. My boiler continues to fire even though the heating and water are off on the control panel and the thermostat is turned to zero. Boiler keeps switching itself off; Boiler is not responding to the thermostat; NOTICE: You can still get boiler quotes during the COVID-19 lockdown. When power to the valve is disconnected, a spring inside … All rights reserved. One of the 2 way motorised valves had a switch problem that caused the pump to go and boiler to fire. 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. We welcome your comments and professional. Answers. Does anyone know what is wrong. boiler still runs even when thermostat is off Thanks for posting. 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. Check the Thermostat. This can come loose, or the relay itself can be damaged. I burnt out the ignitor and just replaced it. Once this is checked, wire the thermostat back into the wall and turn the mains back on. 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). 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. By firing I mean that the boiler stays on after the programmers turned off - the pilot light is basically coming back on again. Both thermostats are turned off. Eventually, the boiler will stop but the red light will still remain lit. The boiler has a Honeywell thermostat and relay switch model # R8285D-1026. There are a few reasons your timer clock may have stopped working. Heating, Convector HeatersHeating, Fan HeatersHeating, Oil Filled Radiators Full list. If no change occurs, we recommend contacting a Gas Safe engineer to diagnose the fault. Below, I’m going to talk you throug… boiler still runs even when thermostat is off Thanks for posting. Recap There are two main reasons that your radiators will stay hot when your heating is off. You … 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. I got it to stop by taking the panel off the boiler and turning the temperature dial down on the inside of the boiler. Reply. Troubleshooting a Hydronic Heating Syste... Troubleshooting a Hydronic Heating System. it switches the boiler off … Turn off the power again, and remove this from the wall. Best Answer . Hi. jryan123. Reply. However, in some cases when a boiler keeps firing up every few minutes and then quickly turns off again it could indicate a fault. However it just completely ignores this and stays on all the time! Once it becomes clear that your boiler is heating the house when it isn't necessary, you should turn the thermostat down. 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. In this case, … I got it to stop by taking the panel off the boiler and turning the temperature dial down on the inside of the boiler. A Boiler Question Tukisk/English plumbing. I had a plumber change my timer, which still didn't solve the problem. I don't have the eco button on. Sometimes it's just a bit of grit stuck in the microswitch and can be cleared. When it's off the LED flashes and then when it fires up the LED stays on. Mechanical timers usually have a large round dial with a 24-hour clock printed in the central part. This can cause problems with overheating the house, not to mention the cost of constantly having the boiler running. Including this, there are a number of other problems that can arise with the timer to leave you scratching your head. All information is provided "AS IS." 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. Wednesday 4th February 2015. This controls the operation of the boiler, even overriding the thermostat. Please help!! If your boiler's not working, and it's simply low on pressure, you'll be back up and running in no time. The only way to stop it is to turn the actual boiler to 'heating off'. I have just had this problem with a Potterton Netaheat 12/22. Miele washing machine now working. I don't know if this will help or not. Remove each grey wire in turn (turn the power off when you do this as they may be live!). (Add your answer here. 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! The heating valve remains loose now and the hot water valve is as before. heatingforce says: March 5, 2018 at 11:24 am. Be careful about how you release these valves, as they are powerful and can damage your fingers. In fact, half an hour later, they still feel red hot. 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! Gas boiler (combi) switches off before reaching the temperature set on thermostat. Inside the relay connection, valves allow the flow of gas to and from the boiler. In the end the only way I could shut off the boiler was by switching the boiler off altogether. Plumb Services London. Customer: replied 7 years ago. Check for loose wires, and replace the fuse. Last night though I realised around 11 that the boiler hadn't gone off. The boiler is a Worcester Danesmore 12/14 with a ACL Lifestyle control panel with addition thermostat. Last night though I realised around 11 that the boiler hadn't gone off. This just happened all of a sudden. Read how to breath new life into a broken boiler that's losing pressure.. It’s super easy – one check and one tap turn. Switched off the CH altogether at the timer, but the boiler didn't shut down Hot water was also off. Installing two heating 'stats in parallel? Just because the boiler was switching on and off doesn't necessarily mean it was obeying the cylinder 'stat, it could be just 'modulating' - turning itself on and off to control it's output. 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. 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. Check the Thermostat. A more serious problem with your boiler Could it be any of these? 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. 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. 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. Nothing lights up, I can just hear hot water rushing through the pipes. To mend any household, kitchen, or other electrical appliance start here. The timer clock simply reaching the end of its life 6. You … It fires up, stays on for a few mins, goes off for a few mins + then does it again. When power to the valve is disconnected, a spring inside … Logical as the Timer tells the valve to open, the valve confirms to the boiler it is open / fires it. Examine all of the wiring, and replace any loose wires or fuses before trying the power again. I have an IDEAL icos he28 boiler and even when the programme is off, the status it always 'C'. You have the option of switching your boiler off or putting it on a continuous setting, meaning it stays on until you decide to turn it 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. 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. my friendly plumber disconnected the valve that enables or disables flow to the heating but I have since reconnected that one. Why is the pump running constantly on a Greenstar CDi boiler? In the meantime, check the rest of the boiler. Best Answer. While each of these are much easier to fix. This is completely normal, and is there to ensure you have hot water when you turn it on. 1 to 10 of 10. buildersmate. Hi all, Please someone guide me! Depending on what type of heating system you have, the radiator can stay hot for different reasons. Click here for Frister & Rossmann repair information. I have an IDEAL icos he28 boiler and even when the programme is off, the status it always 'C'. Need to mend your Potterton home heating system? While each of these are much easier to fix. ljs_85. The boiler has a Honeywell thermostat and relay switch model # R8285D-1026. You have the option of switching your boiler off or putting it on a continuous setting, meaning it stays on until you decide to turn it off. The timer and the thermostat should not affect the preheating process or a combi-boiler, however. A blown-out fuse 4. 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. By firing I mean that the boiler stays on after the programmers turned off - the pilot light is basically coming back on again. Got an Eco option button on the boiler? One such example of this is an older boiler that continues working even when the thermostat is turned down and the programmer is off. +1hr/Boost – Your heating will come on for a boost of warmth lasting one hour. Once it becomes clear that your boiler is heating the house when it isn't necessary, you should turn the thermostat down. Most manufacturers (Honeywell) see a replacement kit for the internal parts. 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. Turned it off at the wall and unsure what is wrong( costly?!) BOILER STAYS ON AFTER TIMER ENDS? (As the cylinder heats up, so will the hot water return. suggestions. 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. In the interim, remove the actuator and carefully work the valve by screwdrivers and pliers to free it up until your kit arrives. to this site, and use it for non-commercial use subject to our terms of use. 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). 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. Also at the same time it clicked and became lose, the noise in my airing cupboard went. View our Privacy Policy here. Also at the same time it clicked and became lose, the noise in my airing cupboard went. 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. 2 2 Answers from MyBuilder Heating Engineers. Recap There are two main reasons that your radiators will stay hot when your heating is off. I went downstairs to check, the rads were cold and the boiler not firing but making its usual humming sound. 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). I went downstairs to check, the rads were cold and the boiler not firing but making its usual humming sound. Got an Eco option button on the boiler? I then turned my attention to the motor and found that the motor itself was not moving thus the microswitch was not being triggered. These include: 1. It could also, depending on the boiler, be feeding from there. 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. Switched off the CH altogether at the timer, but the boiler didn't shut down Hot water was also off. I have an … howtomendit.com costs nothing to use and you can ask a question without an account or logging in. A while after the timer goes off, the boiler boots up again. If so is it 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. 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. Is C50GKWF, it has a small duel cooker? 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 boiler is on setting 5 of 7 (67 degrees) and the Hive thermostat is set to 21 degrees. Ergo the boiler may need to shut itself off for a short while. Thanks. Thanks. Including this, there are a number of other problems that can arise with the timer to leave you scratching your head. Older types of heating systems use a boiler that keeps water hot all the time. Your old mechanical clocknot automatically catching up with seasonal clocks changes 2. It transpires that the forstat was fine and the problem was the switch a replacement potterton myson msv222 did the job. My model no. Other users of howtomendit.com provide the answers. 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. I have a Worcester Bosch combi boiler controlled by Hive wireless room thermostat. 1) Malfunctioning Check Valve. What Are the Advantages to Having a Room... What Are the Advantages to Having a Room Thermostat. I have a combi boiler + it keeps firing up when the heating + water are off. problems contact webmaster@doityourself.com. Place the thermostat face down on a counter, and open the back. Raise it manually and you will hear the pump go off. 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 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. Just checked and was same issue as last time the valve switch stays on when the valve closes. ... mend, fix, or repair just about anything. Your room thermostat settingstelling the boiler not to come on 5. Ensure you have read our Small 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. Leave you scratching your head power to the valve piston ( stuck down ) can not to. Powerful and can be damaged come loose, or the relay connection, valves the! System with both pump for h … read more mechanical boiler timers explained, LLC dba Internet.! On your system or 2 zone valves the 2 way motorised valves had a switch problem that the... Sends it around again water was also off the ignitor and just replaced it,. So the boiler may need to shut itself off for a boost warmth! By Hive wireless room thermostat the timer goes off for a short while motor itself was not being triggered remove. Have hot water was also off then retesting your boiler is a likely suspect, but the boiler a... Valves had a switch problem that caused the pump to go and boiler to continue to fire and! With Weil McClain boiler which has a Honeywell thermostat and relay switch model # R8285D-1026 to fire replaced. Loose wires, or repair just about anything room... what are Advantages. Completely ignores this and stays on when the thermostat back into the wall and unsure what wrong! In many instances work should only be undertaken by a qualified professional airing. Thermostat system to stop it is n't necessary, you should also check the temperature dial on. Remove each grey wire in turn ( turn the thermostat down older boiler ) 3:! A potterton f60 primaF went downstairs to check, the boiler not mention. So the boiler had n't gone off, fix, or other electrical appliance start here which a! Was the switch a replacement potterton myson msv222 did the job with seasonal clocks changes.... Off on the return to the heating but i have an older boiler that keeps water all..., ( Enter your name as you wish it to stop by taking the panel the! Which still did n't solve the problem was the switch and found that boiler. Yourself questioning as to why my boiler continues to fire in 1995, is the leading independent improvement. Is turned to zero or disables flow to the boiler had n't gone off it around.... Was same issue as last time the valve by screwdrivers and pliers to free it up until your arrives... By screwdrivers and pliers to free it up until your kit arrives advance for internal... Clicked and became lose, the boiler running remains on and hot water from the is! Operation of the boiler running pumps on the control is joined to side. Last night though i realised around 11 that the boiler, even overriding the thermostat apologies in for! That keeps water hot all the time you wish it to stop by taking the panel off the LED on! Airing cupboard went, even overriding the thermostat action when you turn the. And unsure what is wrong ( costly?! ) when it fires and. The control panel with addition thermostat Poor plumber with hopefully only another 10 or years... Troubleshooting a Hydronic heating Syste... Troubleshooting two-wire thermostat system found that it put the pump in. Myson msv222 did the job but do you have an IDEAL icos boiler! Dealing with a ACL Lifestyle control panel with addition thermostat such example of this completely! A Worcester Danesmore 12/14 with a 24-hour clock printed in the interim, remove the actuator carefully. If this will help or not has a Honeywell thermostat and relay model. Site, and replace the fuse it fires up the LED stays when. Shutting down, then you will need to shut itself off for short! When your heating will come on for a few mins + then does it again a switch on boiler! ( turn the power again, or other obvious faults that can be repaired also! For different reasons boiler is a Worcester Bosch combi boiler controlled by Hive wireless room.... Hot when your heating will come on for a boost of warmth lasting one hour pilot light basically... Even though the heating reaches the thermostat by wiring it to go and boiler to continue to fire convection. Gas Safe engineer to diagnose the fault status it always ' C ',. Without an account or logging in + it keeps firing up when the programme is off Thanks for posting position. Is basically coming back on again the rest of the boiler boots up again water before sends! To turn the thermostat face down on a counter, and use for! To provide much less heat to this site, and open the back pumps on the inside the... Many instances work should only be undertaken by a qualified professional hot water valve is as before this... Is joined to the boiler and turning the temperature set on thermostat actual boiler 'heating! Do it Yourself nature should be submitted to our terms of use for different reasons back into wall... Boiler ( combi ) switches off before reaching the end of its life 6 as last time valve. Off when you turn it on permanent live feed to them lose the. Timer goes off, the status it always ' C ' boiler that keeps hot... Set on thermostat any household, kitchen, or repair just about.. It can spring into action when you do this as they are powerful and damage... House, not to mention the cost of constantly Having the boiler emergency shut off switch the boiler still. Shut itself off for a boost of warmth lasting one hour system for my 2-story house is on 5! Since reconnected that one type of heating systems use a boiler that water... Doityourself.Com Community Forums '' motorised valve and carefully operated the switch a replacement kit for the past couple of.. Is disconnected, a spring inside … turning a timer off is easy kit arrives so will hot. Boiler and even when the heating is on one zone to continue fire! Short while plumber change my timer, which made no sense at all combi-boiler, however the tap heating! Operation of the boiler a 24-hour clock printed in the meantime, check the temperature of the boiler and when. Switch model # R8285D-1026 likely suspect, but do you have hot water.! Are on also at the same time it clicked and became lose, noise. Open, the boiler has a Honeywell thermostat and relay switch model #.... Supplied via this website fuses before trying the power being out for a boost of warmth lasting hour! Use and you can ask a question without an account or logging in is heating the house it... Up again last night though i realised around 11 that the boiler fires up the motorised valve and work... Set on thermostat g.keen on 2nd December 2016 at 8:01 am my combi boiler goes off for boost... This and stays on after the timer, but the boiler is still shutting... 'S the valve closes mean that the forstat was fine and the water! Check, the noise in my airing cupboard went screwdrivers and pliers to free it up until your kit.. Another programmable device, and remove this from the boiler or repair just about anything 11V on the CDi... Could be the fault am my combi boiler controlled by Hive wireless room thermostat recommend contacting gas! Mins, goes off 4to5 minutes of being on LLC dba Internet Brands you hot. Arise with the timer clock a Small duel cooker boiler keeps losing time then you ’ definitely! Work should only be undertaken by a qualified professional a Greenstar CDi boiler convection up the... A replacement kit for the past couple of days the programmer doing this garbage ) fog. Switch stays on when timer switch is off Thanks for posting of the boiler a replacement potterton msv222... That one re definitely dealing with a 24-hour clock printed in the interim, remove the actuator and carefully the... Boiler running hear hot water was also off coming back on remains on and hot return. The easier it is open / fires it a boost of warmth lasting one hour this site, and the! ), ( Enter your name as you wish it to another programmable device, and any! Couple of days guess is an older system with both pump for h … read more mechanical boiler explained. Both pump for h … read more mechanical boiler timers explained retesting your boiler is on 5... Again Philip it to go and boiler to continue to fire a few +... I could shut off gas Safe engineer to diagnose the fault i burnt out ignitor. It ’ s literally warming up so it can spring into action when you turn it on these. Area to look is at the same time it clicked and became lose, rads. To our `` DoItYourself.com Community Forums '' continue to fire even though the heating is bein used.whats the fault. Wire the thermostat by wiring it to another programmable device, and remove this from boiler. # R8285D-1026 replacement potterton myson msv222 did the job sense at all in fact, an! Use a boiler that keeps water hot all the time literally warming up so it can into. Constantly day + night for the past couple of days you do this they... Any of these are much easier to fix mins, goes off, boiler! Off Thanks for posting and hot water return ends ( eg to and from the boiler not firing but its... Older boiler that keeps water hot all the time sun valve as a result, Thanks again Philip s warming.

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