The boiler has a Honeywell thermostat and relay switch model # R8285D-1026. Best Answer. 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. Apologies in advance for the dumb question and lack of detail - can obvious... Troubleshooting two-wire thermostat system. Including this, there are a number of other problems that can arise with the timer to leave you scratching your head. 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. 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. It seems to come on at random. A Boiler Question Tukisk/English plumbing. 1) Malfunctioning Check Valve. Turn off the power again, and remove this from the wall. Thanks. It could also, depending on the boiler, be feeding from there. Troubleshooting a Hydronic Heating Syste... Troubleshooting a Hydronic Heating System. If your boiler's not working, and it's simply low on pressure, you'll be back up and running in no time. To prevent … 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. Check for loose wires, and replace the fuse. Answers. Nothing lights up, I can just hear hot water rushing through the pipes. 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. To mend any household, kitchen, or other electrical appliance start here. The boiler has a Honeywell thermostat and relay switch model # R8285D-1026. Examine all of the wiring, and replace any loose wires or fuses before trying the power again. Place the thermostat face down on a counter, and open the back. boiler still runs even when thermostat is off Thanks for posting. Installing two heating 'stats in parallel? Once it becomes clear that your boiler is heating the house when it isn't necessary, you should turn the thermostat down. Should have added that the froststat is potterton prt100 and the boiler a potterton f60 primaF. Working with an older boiler, you may sometimes come across problems that seem unusual, or which don't correspond to anything in the manual. heatingforce says: March 5, 2018 at 11:24 am. Does anyone know what is wrong. 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! When we turn the heating off, it stays on for another couple of minutes, then we hear it click off - no problem. Older types of heating systems use a boiler that keeps water hot all the time. When it's off the LED flashes and then when it fires up the LED stays on. 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. This controls the operation of the boiler, even overriding the thermostat. The clock resettingdue to the power being out for a while (especially if you have an older boiler) 3. When it's off the LED flashes and then when it fires up the LED stays on. The radiators are hot. There are a few reasons your timer clock may have stopped working. A while after the timer goes off, the boiler boots up again. Hi all, Please someone guide me! Sometimes it's just a bit of grit stuck in the microswitch and can be cleared. I went downstairs to check, the rads were cold and the boiler not firing but making its usual humming sound. 70 months. frost stat is a likely suspect , but do you have a 3 port valve on your system or 2 zone valves? It did still register 11V on the external controls signal, which made no sense at all. The only way to stop it is to turn the actual boiler to 'heating off'. Switched off the CH altogether at the timer, but the boiler didn't shut down Hot water was also off. Be careful about how you release these valves, as they are powerful and can damage your fingers. It transpires that the forstat was fine and the problem was the switch a replacement potterton myson msv222 did the job. repairs can be dangerous. You may find a blown fuse, loose wires, or other obvious faults that can be repaired. I have an … it switches the boiler off … I went downstairs to check, the rads were cold and the boiler not firing but making its usual humming sound. ljs_85. Mechanical timers usually have a large round dial with a 24-hour clock printed in the central part. This is normal, and the length of time depends on the pipework, make of Boiler, and how it was set up, etc. 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. At times you might have found yourself questioning as to why my boiler stays on when timer is off. What Are the Advantages to Having a Room... What Are the Advantages to Having a Room Thermostat. 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. Ensure you have read our Small 1 to 10 of 10. buildersmate. 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. Eventually, the boiler will stop but the red light will still remain lit. That depends on the design of the boiler. Heating, Convector HeatersHeating, Fan HeatersHeating, Oil Filled Radiators Full list. I have a Worcester Bosch combi boiler controlled by Hive wireless room thermostat. Once it becomes clear that your boiler is heating the house when it isn't necessary, you should turn the thermostat down. 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. If the stat wasn't turning off the heating (or boiler) it (as i'm sure you will know) is being fed from the microswitch on a valve. However, when I came home this afternoon the boiler was again on despite the timer being off. My boiler continues to fire even though the heating and water are off on the control panel and the thermostat is turned to zero. ), (Enter your name as you wish it to be displayed.). Last night though I realised around 11 that the boiler hadn't gone off. 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. ljs_85. Turned it off at the wall and unsure what is wrong( costly?!) If the two devices don't match, try removing the control switch, and then retesting your boiler. Questions of a Do It Yourself nature should be I have an older system with both pump for h … read more 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. Your old mechanical clocknot automatically catching up with seasonal clocks changes 2. Turned it off at the wall and unsure what is wrong( costly?!) One such example of this is an older boiler that continues working even when the thermostat is turned down and the programmer is off. You can check the power to the thermostat by wiring it to another programmable device, and leaving it to go off. Check the Thermostat. 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. 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. I have just had this problem with a Potterton Netaheat 12/22. Wednesday 4th February 2015. When power to the valve is disconnected, a spring inside … The timer clock simply reaching the end of its life 6. Circulator continues to run because the valve piston (stuck down) cannot rise to switch off the pump. Once it becomes clear that your boiler is heating the house when it isn't necessary, you should turn the thermostat down. The hydronic heating system for my 2-story house is on one zone. 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. Turning a timer off is easy. 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. +1hr/Boost – Your heating will come on for a boost of warmth lasting one hour. +1hr/Boost – Your heating will come on for a boost of warmth lasting one hour. When I turn the power on at the panel and the boiler emergency shut off switch the boiler runs and doesn't shut off. Reply. So the boiler needs to provide much less heat to this water before it sends it around again. 2 2 Answers from MyBuilder Heating Engineers. A blown-out fuse 4. Plumb Services London. 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. American Standard Furnace 6 red flashes Code. Depending on what type of heating system you have, the radiator can stay hot for different reasons. Including this, there are a number of other problems that can arise with the timer to leave you scratching your head. 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. Basic here - but when you say 2 valve - I have two electric valves - one for the heating and one for hot water. However it just completely ignores this and stays on all the time! I burnt out the ignitor and just replaced it. Place the thermostat face down on a counter, and open the back. Mechanical timers usually have a large round dial with a 24-hour clock printed in the central part. A more serious problem with your boiler Could it be any of these? 1995-2018 MH Sub I, LLC dba Internet Brands. Logical as the Timer tells the valve to open, the valve confirms to the boiler it is open / fires it. (As the cylinder heats up, so will the hot water return. It fires up, stays on for a few mins, goes off for a few mins + then does it again. 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. When power to the valve is disconnected, a spring inside … 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. Reply. A while later it was back down to 0V. 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. 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. By firing I mean that the boiler stays on after the programmers turned off - the pilot light is basically coming back on again. suggestions. If, upon examination, the valves seem to be stuck, you should call in a professional to remove the system and fix the problem. 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. Older types of heating systems use a boiler that keeps water hot all the time. I have a Worcester Bosch combi boiler controlled by Hive wireless room thermostat. Really appreciated your advice.PaulineOct 2020. The boiler is a Worcester Danesmore 12/14 with a ACL Lifestyle control panel with addition thermostat. I have an IDEAL icos he28 boiler and even when the programme is off, the status it always 'C'. 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. Advance – This moves the timer to the next ‘on’ or … Recap There are two main reasons that your radiators will stay hot when your heating is off. 1) Malfunctioning Check Valve. Update: have tried the on off button at the mains. heatingforce says: March 5, 2018 at 11:24 am. I got it to stop by taking the panel off the boiler and turning the temperature dial down on the inside of the boiler. This can cause problems with overheating the house, not to mention the cost of constantly having the boiler running. 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. 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. 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. My boiler pump runs continuously and fires even when timer switch is off? I have an IDEAL icos he28 boiler and even when the programme is off, the status it always 'C'. In the end the only way I could shut off the boiler was by switching the boiler off altogether. 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). Recap There are two main reasons that your radiators will stay hot when your heating is off. Website operating 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. I had a plumber change my timer, which still didn't solve the problem. But it stays on when the heating is bein used .whats the possible fault . Raise it manually and you will hear the pump go off. Attempting 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. 2 2 Answers from MyBuilder Heating Engineers. 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). 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. 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. But it is not. 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. 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. Both thermostats are turned off. If the boiler is still not shutting down, then you will need to consider other causes. While each of these are much easier to fix. I got it to stop by taking the panel off the boiler and turning the temperature dial down on the inside of the boiler. 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. However, in some cases when a boiler keeps firing up every few minutes and then quickly turns off again it could indicate a fault. If no change occurs, we recommend contacting a Gas Safe engineer to diagnose the fault. Need to mend your Potterton home heating system? Hot water from the boiler rises and travels by natural convection up to the radiators. In many instances work should only be undertaken by a qualified The timer and the thermostat should not affect the preheating process or a combi-boiler, however. All information is provided "AS IS." Try to include as much detail as possible. I then turned my attention to the motor and found that the motor itself was not moving thus the microswitch was not being triggered. Also at the same time it clicked and became lose, the noise in my airing cupboard went. If so is it off. 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! Hot water from the boiler rises and travels by natural convection up to the radiators. It seems to come on at random. You … my friendly plumber disconnected the valve that enables or disables flow to the heating but I have since reconnected that one. When I turn the power on at the panel and the boiler emergency shut off switch the boiler runs and doesn't shut off. I don't have the eco button on. 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. The boiler is on setting 5 of 7 (67 degrees) and the Hive thermostat is set to 21 degrees. 11 posts. 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. BOILER STAYS ON AFTER TIMER ENDS? Read how to breath new life into a broken boiler that's losing pressure.. It’s super easy – one check and one tap turn. 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. submitted to our "DoItYourself.com Community Forums". Tam (Poor plumber with hopefully only another 10 or so years more left doing this garbage) F. fog. It’s literally warming up so it can spring into action when you turn on the tap or heating. In fact, half an hour later, they still feel red hot. professional. By firing I mean that the boiler stays on after the programmers turned off - the pilot light is basically coming back on again. 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. View our Privacy Policy here. I also have a switch on the return to the boiler which I guess is an overheat switch set a 60. Had same problem with Weil McClain boiler which has a 3-way valve with an actuator. I recently purchased a new home. but will stay on when the heating is on .when it cuts off a letter d appears.what could be the fault. 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. In the meantime, check the rest of the boiler. 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. 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). DoItYourself.com®, founded in 1995, is the leading independent Ordered a new sun valve as a result, thanks again Philip. 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. Click here for Frister & Rossmann repair information. 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. 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 pumps on the Greenstar CDi range have a permanent live feed to them. Hi. 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. to this site, and use it for non-commercial use subject to our terms of use. The heating valve remains loose now and the hot water valve is as before. 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. You … 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! Conclusion. One of the 2 way motorised valves had a switch problem that caused the pump to go and boiler to fire. My model no. This is completely normal, and is there to ensure you have hot water when you turn it on. 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. Plumb Services London. I opened up the motorised valve and carefully operated the switch and found that it put the pump off. This can come loose, or the relay itself can be damaged. 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. (The boiler fires up and down until the heating reaches the thermostat setting. In fact, half an hour later, they still feel red hot. Got an Eco option button on the boiler? However it just completely ignores this and stays on all the time! The heating valve remains loose now and the hot water valve is as before. Wednesday 4th February 2015. A thermostat fault may be causing your boiler to continue to fire up and stay on. Hi. 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. You may freely link Most manufacturers (Honeywell) see a replacement kit for the internal parts. Your room thermostat settingstelling the boiler not to come on 5. In the end the only way I could shut off the boiler was by switching the boiler off altogether. (Add your answer here. It has been doing it constantly day + night for the past couple of days. 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. boiler still runs even when thermostat is off Thanks for posting. Best Answer. Print page before using information supplied via this website. 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. 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. Below, I’m going to talk you throug…
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