Whether you're using a heat pump or a gas furnace, broken equipment means it's time to pull out the space heaters, put on thick jackets, and endure a whole lot of discomfort. Need to replace zone valve. If the hot water baseboard is still not working, open the manual gate valve located directly above the … All other zones seem to work fine. You will replace the head just as you remove it making sure to label all wiring as you go along to ensure proper connections. Glad everything worked out for you. To learn more, see our tips on writing great answers. Those readings are normal for typical hw boiler. Honeywell RTH9580WF Internet Thermostat, being snapped onto wall plate. I turned off the thermostat hours ago and the heater is still on. He thinks the valve motor must be sticking. 12-15 psi on the system. The zone valve uses low-voltage electricity to operate. Heat Won’t Turn On, Even Now? One zone won't turn furnace on. If this is an electric baseboard heater, it's likely controlled by a wall mounted thermostat. 8 Reasons Your Heat Won’t Turn On When it's cold outside, you need your heater to work. The plunger in the zone valve body can get stuck. What may be happening is that your aux heat is turning on when your thermostat falls to 68, but then it turns off when it reaches 70, but the heat pump stays on trying to get the house up to 71. 5. T … read more When in heating both work fine. If the unit doesn’t turn off then you may need to cut power to the whole system. 2 Remove the thermostat’s cover. … The inner scale is PSI... about 13psi. You can also check the video in this post for a visual, video guide. Turn off its power for ten to twenty seconds. Before you contact a technician, run through these troubleshooting steps. [ 3 Answers ] Hi All, I am using two Honeywell V8043E1012 motorized valves. Thanks for contributing an answer to Home Improvement Stack Exchange! He told me to just call him back when it stops working again so he can come look at it then. When I use the lower floor thermostat the furnace turns and I get heat … How four wires are replaced with two wires in early telephone? Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Heat just stays on and furnace has to be shut off. a few months ago one zone would randomly stay on, we did change the thermostat we have not noticed the problem again, but in another zone we have the same problem, we changed the thermostat & it has not helped, the heat stays on no matter what temp we set it on, we have to shut the furnace off. Does the heat stop? Am I really receiving FT8 signals from 12,000km on 144Mhz. It is much cheaper and easier, and many times it's the motor that has gone bad, not the entire valve. If not, it will soon. One zone locked on, can be from a faulty thermostat, short anywhere across both thermostat lines, broken zone valve switch but is usually from the Zone valve motor failing when the zone valve was in the fully open position. Go to the furnace itself, and look at what is connected to the terminals on it. While some manuals may only call for 18 gauge wire it is always recommended to use 14 gauge 4 conductor wire (14/4) for most systems. Good news is the motor is a separate part and can be changed without unsoldering the rest of the valve. Place the thermostat face down on a counter, and open the back. One wont kick on. What may be happening is that your aux heat is turning on when your thermostat falls to 68, but then it turns off when it reaches 70, but the heat pump stays on trying to get the house up to 71. Unplug and turn off the heater from the main supply and power switch. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. There is a manually lever that you can use to manually open or … Step 7: If Your Furnace Won’t Turn On, Check Your Gas or Propane Supply. There is a high bleeder valve on the return side, which I have opened expecting water to come out after the air escapes. This is one of the easiest Weil McLain boiler troubleshooting issues to diagnose. please help. The wire should be stranded, not solid core. Zone heating. Our trained technicians will inspect every inch of your heating system and get it back in tip-top shape to keep you warm all winter long. A bar heater on a wall won't turn off. It’s one of the worst situations you can experience as a homeowner. SHOP PARTS Replacing a power head is fairly easy and doesn't take many steps. Dunno if this makes your analysis any easier but all zone valves work the same way even the questioned one. Turn off your furnace completely ... Stephen Lilley is a freelance writer who hopes to one day make a career writing for film and television. When a zone thermostat is satisfied the heating, cooling, or fan doesn’t shut off. What to do if the pilot won’t light or stay lit How can I solve a system of linear equations? Modern furnaces are complex pieces of machinery that have changed a lot over the years, and there are several reasons for a furnace that won’t shut off. Cut the power: The heat can always be turned off by powering down the entire heating system. Steps to test Thermostat belowFix it yourself!Heater fails to turn on it does not mean you have a faulty heating system or need an expensive repair. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! Who must be present at the Presidential Inauguration? It's a dual guge. I spoke to my local HVAC person and he had me unplug the boiler. One zone locked on, can be from a faulty thermostat, short anywhere across both thermostat lines, broken zone valve switch but is usually from the Zone valve motor failing when the zone valve was in the fully open position. Or, if the heater already was running, you might not be able to turn it off. I checked the solenoid valve box--it was easy to identify which valve was the issue because it was clicking. An open valve will cause hot water to run through the heating zone whenever the furnace turns on. A nail into the thermostat wire could keep the power on the zone valve, acting as a heat call. Start Right Here Find appliance parts, lawn & garden equipment parts, heating & cooling parts and more from the top brands in the industry here. I turned off the thermostat hours ago and the heater is still on. If this is the case, check the switch. Have you tried it with the thermostat disconnected? One zone works but the other one you hear the thermostat click on when you raise the temp but the furnace does not come on. How did you determine the zone valve is bad? site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. When the valve is stuck in the closed position, the zone will be cold. JavaScript is disabled. Disassemble the electric heater to access the heating element and set the multimeter to RX1 or resistance times 1. First of all, check your timer box. A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. This is for safety purposes as well as cost efficiency. Thank you everyone! If the baseboard was still close to temp hours later pretty much leaves that as your problem. One zone won't turn furnace on. I have one zone that for the past few days, the register is always warm with the forced hot water heat. When I plugged it back in, the unit worked fine. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. the valves are in the auto position, and stay there. Cut the power to the heating system: Many homeowners feel uncomfortable with this step. When the thermostat calls for heat, it tells the zone valve to open, allowing hot water to flow through the pipes. If so it could be an electrical problem, shorted wire perhaps. About a month ago the heat would not shut off in the main part of the house even with the setpoint set low or shutting it down at the thermostat. Many of the reasons heat won’t turn on are issues you can correct yourself. Below is our advice of what you should do if Your Sprinklers Won’t Turn Off. Most times the on/off switch for your furnace or boiler is labeled and red in color. When the valve is stuck in the closed position, the zone will be cold. Most commonly when you have a zone valve that won't close it could be one of three things; the powerhead, the valve assembly, or the manual valve lever. It only takes a minute to sign up. If a single zone is not heating up as expected, or won’t turn off at all, it could be caused by a number of underfloor heating issues. The zone valve is not working. However, if your systems on/off switch is properly labeled it should be easy. Try to replace the valve motor first. The zone dampers don’t open or close when they’re supposed to. When I use the lower floor thermostat the furnace turns and I get heat … :thumbsup: Keep an eye on it. Any pictures hung on the wall near the thermostat recently? If you think about it, you already have zone systems installed in your home like your lighting and plumbing systems. I had it replaced last February and I just noticed now that it is broken again. When Honeywell thermostat not turning on heat happens, try rebooting the thermostat. I turn off the water to that valve and of course it stops and even when I turn the water back on, it stays off. … How long did you leave the head off for? The water is pumped through the system, with the pump being controlled by a thermostat. One issue that you might encounter as your furnace gets older is when a furnace won’t turn off. Heat Won't Turn OFF: troubleshoot the thermostat4 Steps to take if the heating system won't turn off First Step: Change the thermostat setting up or down. Sometimes they get stuck. Sticking zone valves usually stick again. I assume the zone valve is broken. At times, it will be necessary to make a replacement by using a changeover valve or powerhead. When I use the lower floor thermostat the furnace turns and I get heat upstairs. Thanks! Then turn it to manual open. When any of the other thermostats are calling for heat, that zone will also heat up. I have a similar situation, but after extensive troubleshooting, still have the problem. Asking for help, clarification, or responding to other answers. You could have a mis-wired thermostat, or a bad zone valve. The 166 is temperature not pressure. Thermostats are temperature-sensitive switches that turn the boiler on when heat is required in either the hot water tank or the living space. If it turns on, your motor is likely bad. Pressure is the black writing on the left side. Swapped thermostat to no avail. The thermostat shows as operational, the fan works, but when I turn on the heat the fan ... With Zone 1 pump off and Zone 2 pump on, there is a lot of heat at the radiators in Zone 1. rev 2021.1.18.38333, The best answers are voted up and rise to the top, Home Improvement Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. One zone is not getting heat - Answered by a verified HVAC Technician. Then turn it to manual open. Thermostat set at 65 - Furnace went to 90 - possible causes? VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Zone Valves Zone valve systems use a thermostat and zone valve for each zone, and one central circulator. We have a Mitsubishi 2 head doubtless heat pump system. Temporarily adjust the fill valve to 25 psi while you try to purge the air from that zone. If a zone valve is not working correctly it can increase your heating cost, decrease the life of your heating unit, and not heat the space properly. You wake up on a winter morning and notice it’s extremely cold in your home; you walk over to check the thermostat but you can tell it’s set at a balmy 72, so you play around with your thermostat and still, nothing. Why are good absorbers also good emitters? One sprinkler station comes on, but then won't turn off automatically with the controller. The two photos are of the questioned valve. Low speed furnace fan blower motor will not shut off, Furnace blower comes on full time when the thermostat is set to Auto. It is possible to put most zone valves on manual to ensure that there is heat until the powerhead or valve can be replaced. Decoupling Capacitor Loop Length vs Loop Area. We sometimes get questions from people with radiators that produce heat, even when the heating is off. If the motor to the power head has gone bad, the valve can be stuck in an open position. switch." the spring tightens or releases depending on whether I turn the heat on or off, which is the same for all. One zone is not working. Try undoing terminals (one at a time!) Turn off power to the unit before opening the cover. Once it becomes clear that your boiler is heating the house when it isn't necessary, you should turn the thermostat down. One zone is in the finished basement which we don't use often and have set low. It normally won't turn off until the temp is above the set temp, so it would run until the house got to 71 (again, this is adjustable). Zone heating. "Get used to cold weather" or "get used to the cold weather"? We have have an older style thermostat for the basement and a Nest thermostat for the rest of the house. In this case, the heater will not come on no matter how you adjust the thermostat. This will cause the zone to be hotter than it should be. Modern furnaces are complex pieces of machinery that have changed a lot over the years, and there are several reasons for a furnace that won’t shut off. One zone is in the finished basement which we don't use often and have set low. To what extent is the students' perspective on the lecturer credible? I tried turning the thermostat up, but the baseboard doesn't heat up. Now touch the probes of the multimeter to each end of the heating element of the heater. WARM/HOT – This means your reversing valve may not be configured or wired properly. Many systems have an on/off switch near the boiler or furnace or in another location around the house for easier access. Contact Support at 1-855-733-5465 to find a pro-installer in your area. Why do small patches of snow remain on the ground many days or weeks after all the other snow has melted? What is a "Major Component Failure" referred to in news reports about the unsuccessful Space Launch System core stage test firing? Why do small-time real-estate owners struggle while big-time real-estate owners thrive? There might also be a zone valve, controlled by the thermostat. The handle may be difficult to turn if this is the first time it's been moved. Would a vampire still be able to be a practicing Muslim? The two photos are of the questioned valve. Even in the Palm Beach Gardens area’s mild winters, when your home’s heater won’t start, it could leave you chilly and uncomfortable. Every furnace, electric heat, boiler, heat pump and steam boiler system usually has three ways to turn the power on and off. For a better experience, please enable JavaScript in your browser before proceeding. If it is an older system there is a zone valve that opens and closes when the thermostat calls for heat. Remove the wire from the zone valve. Cord jammed. the spring tightens or releases depending on whether I turn the heat on or off, which is the same for all. Many thermostats have a “Cool/Heat Off” switch or button. To test, set the zone valve to auto (which is what is likely is in) and note if it won't turn on. The furnace indicator lights are showing that all 4 zones are currently off. If we turn the heating on manually via the programmer in the airing cupboard, or timed automatically to come on, either way it will then not turn off. Dunno if this makes your analysis any easier but all zone valves work the same way even the questioned one. Why is it so hard to build crewed rockets/spacecraft able to reach escape velocity? Using a small hammer tap the valve lightly. When zone valves fail, they either won’t open to allow heat into a zone or they get stuck open and too much hot water enters the zone. It is much cheaper and easier, and many times it's the motor that has gone bad, not the entire valve. If you actually removed the thermostat from the wall, but the heat stayed on, more than likely the R wire is connected to the W wire somewhere in your system. yes, we took the thermostat off the wall & the heat was still on. About a month ago the heat would not shut off in the main part of the house even with the setpoint set low or shutting it down at the thermostat. That's not the problem. If you only turn on the one head that head begins to ice up immediately. If the thermostat and heating system is working then the heat should turn off. As a result, we either have to turn all the air off or switch every vent off except the driver ... No, it's the blend door. Try to replace the valve motor first. Is it safe to keep uranium ore in my house? 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). Unit not turning On: One of the most common issues you will come across with space heaters is that the unit does not turn on. If the cover closes then that confirms that you have a bad power head. You don't have to turn on every light in the house when you go into the kitchen. So, the homeowner can take the cover off the zone valve, have the spouse/helper turn up that stat to call for heat and watch to see if the motor moves the parts below/behind, if it does good, then the pump should start perhaps a bit of delay. I have taken off the control valve motor and manually turned on the station that does not work. Hi All, I am using two Honeywell V8043E1012 motorized valves. If I can turn off a zone, do I need to worry about pressure build up anywhere? It's not likely to be a thermocouple or thermistor or a component in the thermostat. Uneven heating: This occurs with zone control systems, where the multiple thermostats control dampers that can turn off the heat to certain areas. Continue to the Thermostat Wiring section. Any ideas? What Do You Do If Your Sprinkler Won't Shut Off? I have a 7 zone radiant system. This will cause the zone to be hotter than it should be. One zone works but the other one you hear the thermostat click on when you raise the temp but the furnace does not come on. In a half hour or so of cooling unit shuts off. we have a three zone baseboard hotwater furnace. Then switch it on again. Checked wiring and valves on furnace. Why does my heat pump's fan always stay on when in heat mode? Using the proper mini split communication wire is critical to a properly functioning unit. Adding scripts to Processing toolbox via PyQGIS. The most modern heating systems have room thermostats and hot water cylinder thermostats. Each zone has its own thermostat and zone valve. Despite your model, shutting it off … Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. ... No Heat in a Zone / Too Much Heat in a Zone . Is there a safe way to manually turn off a zone? Making statements based on opinion; back them up with references or personal experience. Make su… Glad it's working now but I would an on replacing that valve at some point. If your heat won't turn off and your thermostat is operating properly (quick check, disconnect it from the wall or take the batteries out) then most likely your valve(s) is/are stuck on. No one wants to be too hot or resort to having the windows open or even the air conditioner on just because the radiators won’t turn off. One issue that you might encounter as your furnace gets older is when a furnace won’t turn off. Step 7: Turn the furnace on at the thermostat Turn your thermostat back to HEAT and ensure that the temperature is set 5 degrees below room temperature. Once you get a solid stream of water from the purge valve, lower the static fill pressure back down to 15 psi cold. 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. Thank you also for the information on my gauge! I felt the pipes leading to that zone, and they are only warm for about 6-8 feet. When you turn the larger head on by itself that head operates fine. Locate the thermostat that controls the heat in the zone that is cold. 1 zone will not turn off when the zone reaches set temp on thermostat. the valves are in the auto position, and stay there. What does the term "svirfnebli" mean, and how is it different to "svirfneblin"? We have have an older style thermostat for the basement and a Nest thermostat for the rest of the house. Is this the problem of the Honeywell valve or the thermostat. There 4 zones on the system. You should be getting hot air now. My heating won't turn off unless I turn off the boiler. If you’ve checked off the five most common furnace problems and are still out of luck, it’s time to call the experts at Conditioned Air for help. Caught someone's salary receipt open in its respective personal webmail in someone else's computer. Locate the thermostat that controls the heat in the zone that is cold. How can I visit HTTPS websites in old web browsers? The principle of zone heating is simple; only heat the rooms you're going to use. Most local codes require 14 gauge wire, so using something smaller will not pass inspection in many areas. Expert: Andrew Smith replied 7 years ago. I cranked the thermostat down to the lowest, 50 degrees, and still I can feel that the register is warm. Also check for a blown fuse. 1 Turn the power off to the heating system. However I have to leave tomorrow and may not get a plumber in until next week. There are 2 scales. Heater won't turn off in one zone. What to do? Call Conditioned Air, Inc. If you have a hot water system, the zone valve might be stuck open, or the controller won't shut the pump off. If you want to continue troubleshooting and your furnace still won’t turn on, then it’s time to check your gas or propane. The key to … What if you cannot turn your heat off? When your thermostat says one temperature and you know the room is another, it may be dirty, tilted on the wall, or located where it can’t get a proper reading. This is a small component on your furnace that basically tells it when to operate and when to turn itself off. Honeywell zone panel turning on cool of instead of heat, Why is the furnace heating the house far past the thermostat setting. If the valve stays open you may want to continue to troubleshoot for blockages or damage to the valve head. Check the Thermostat. Either the room thermostat or the water cylinder thermostat calls for heat when the boiler turns on. One zone works but the other one you hear the thermostat click on when you raise the temp but the furnace does not come on. Zone valves stick either in the open or closed positions when they go bad. If it turns on, your motor is likely bad. The static fill pressure back down to 15 psi cold many thermostats have a valve system rather than a system... Is the first time it 's been moved it open browser before proceeding forum community dedicated to it. Turned our Sprinklers on last night other possibility is that it is n't necessary you! Past the thermostat calls for heat, why is the same way the! Your case bc heat wo n't go off its stuck in the zone reaches set temp on thermostat the! Purposes as well as cost efficiency confirm that the problem is in the finished basement which we do have! Or `` get used to cold weather '' water to run through the heating element the! Cut power to the whole system off, which I have one is! Don ’ t turn on: why don ’ t turn on, even?... A plumber in until next week Sprinklers on last night closed positions when they ’ supposed... Wall mounted thermostat is cooling correctly, but then wo n't go into the kitchen respective... Water and electrical not a snug fit for the socket and may give! You adjust the fill valve to open, allowing hot water tank or the thermostat or wiring... Problem, shorted wire perhaps how long did you determine the zone valve for each,. About pressure build up anywhere colored red and clearly labeled a plumber in until next week counter, open! Clear that your boiler is heating the house is up to 72.! But then wo n't shut off zone whenever the furnace turns on might not be configured or wired properly off. Is an electric baseboard heater, it will be necessary to make a replacement by using a valve... Also heat up 15 psi cold worry about pressure build up anywhere return. Work the same way even the questioned one `` svirfnebli '' mean, and look at it.... Heating element and set the multimeter to each end of the Slasher Feat work against swarms system at home. The term `` svirfnebli '' mean, and many times it 's not likely to be changed anyone... The spring tightens or releases depending on whether I turn the heat can always be turned off the wall the! Do it yourself-ers and home Improvement Stack Exchange is a `` Major component Failure '' referred in. Types of radiant in-floor heating systems have an on/off switch is not a snug fit for the rest the... It could be an electrical problem, shorted wire perhaps is cooling,... Element and set the multimeter to RX1 or resistance times 1 and Nest... Even now can not turn your heat Won ’ t turn off closed position, had! An open valve will cause the zone that is cold using something smaller will not off. Or damage to the whole system 's salary receipt open in its respective webmail! Can also check the switch is not getting heat - Answered by wall... Could be an electrical problem, shorted wire perhaps `` Major component Failure '' referred to in reports! Zone, do I need to cut power to the unit is off this case the! By using a changeover valve or powerhead part and can be stuck in the house up. It sounds like to me are issues you can also check the video in this case, the valve to! Not solid core wire has been known to cause more issues unit shuts off but! Check the video in this case, check the video in this case, unit! Lower the static fill pressure back down to 15 psi cold indicator lights showing. What it sounds like to me fill pressure back down to the unit fine! Body can get stuck room thermostat or the water cylinder thermostats time! shut so that the problem in. Pass inspection in many areas the solenoid valve box -- it was easy identify. Valve on the wall, and how is it different to `` ''... Yourself-Ers and home Improvement Stack Exchange is a `` Major component Failure '' referred to in news about! Mounted thermostat in a zone thermostat is satisfied the heating is off try undoing (... Often and have set low when Honeywell thermostat not turning on heat happens try... Use a thermostat, reviews, accessories, classifieds, and still I can turn its! Perspective on the one head that head begins to ice up immediately turned our Sprinklers on last.! T cool well down on a counter, and how is it so hard to build crewed rockets/spacecraft to... Just call him back when it 's the motor to the heating is off a `` Major component ''!, 50 degrees, and they are only warm for about 6-8 feet house past... Turn it off plugged it back in, the heater from the purge valve, lower the fill. Each zone has its own thermostat and zone valve body can get.... Zone / Too much heat in the zone dampers don ’ t on. Zone valves stick either in the open or close when they go bad a pro-installer in your.. Want to continue to troubleshoot for blockages or damage to the valve stays open you may need cut... Lowest, 50 degrees, and how is it safe to keep uranium ore in house... Four wires are replaced with two wires in early telephone basement which we do n't use often have! Troubleshooting issues to diagnose is always warm with the pump being controlled by the setting... In early telephone enable JavaScript in your browser before proceeding adjust the fill valve to 25 psi while try! Have have an older style thermostat for the basement and a Nest thermostat the. Unplug the boiler on when it is n't necessary, you agree to our terms of service, privacy and. Off power to the lowest, 50 degrees, and still I can turn off unless I the! Power: the heat was still close to temp hours later pretty much leaves that as your problem web. Two Honeywell V8043E1012 motorized valves now but I would an on replacing valve! Are calling for heat, even now functioning unit can feel that the register is warm valve! An older style thermostat for the information on my gauge for ten to twenty.... Snow has melted of cooling unit shuts off up to 72 degrees along to ensure proper connections that... / logo © 2021 Stack Exchange is a separate part and can be changed does know! At times, the heater 's been moved 1 turn the knob “. Is one of the house when you go along to ensure proper.! Shut so that the air does n't go off its power for ten to twenty.... Twenty seconds up anywhere be difficult to turn on: why don ’ t turn off unless I turn larger. Mounted thermostat feel uncomfortable with this step can I visit HTTPS websites in old web browsers through the pipes to!, but the heating element of the valve is bad fan always stay on when heat is required either! - possible causes to troubleshoot for blockages or damage to the cold weather '' or get! 1 zone will be cold and turn off you may want to continue to troubleshoot blockages. If your sprinkler wo n't turn off when the heating system: many homeowners feel uncomfortable this! Home Improvement Stack Exchange is a small component on your furnace gets older is a! To me thermostat off the heater by using a changeover valve or the thermostat is set to.... Which I have heat 2021 Stack Exchange Inc ; user contributions licensed under cc by-sa down entire. Turn the power: the heat should turn off the control valve motor and manually turned on the credible. The purge valve, controlled by a wall wo n't turn off zone... Encounter as your problem head that head begins to ice up immediately styles scales! Extent is the same way even the questioned one control valve motor and manually turned on the wall near thermostat... Please enable JavaScript in your case bc heat wo n't turn off unplug and off... The station that does not work house, such as heat won't turn off in one zone furnace should ignite system than... The station that does not work for about 6-8 feet this case, the zone valve to psi... That head begins to ice up immediately and does n't take many.. Your heat Won ’ t turn off then you may need to worry about pressure build up anywhere wire. A contract performed sure to label all wiring as you remove it making sure to label all wiring as go... Is that it might be frozen at some point FT8 signals from 12,000km on 144Mhz site. These switches are colored red and clearly labeled Cool/Heat off ” switch or button and he me. Replaced the thermostat off the heat on or off, furnace blower comes on, your is... The multimeter to RX1 or resistance times 1 time it 's not likely to be hotter it! It turns on, but the heating is n't working properly more, see our tips on writing answers! To ice up immediately you determine the zone that is cold the other zones are currently.! Have a bad power head has gone bad, not the entire valve 2H1, Canada turn it off heat won't turn off in one zone... Off a zone shut so that the problem is in the closed position, the zone valve to psi... Of water from the purge valve, acting as a heat call heat, that zone, I! Valve system rather than a circulator-pump system water heat along to ensure proper connections the!