Then, check to be sure that the thermostat is set to a temperature high enough to trigger the furnace to emit heat. Locate the power switch on the furnace … Adjusting the anticipator will go a long way in getting your thermometer to work again. With a gas furnace, it’s usually the limit switch tripping because the furnace … Power is now back on, but furnace does not respond to thermostat for heating or cooling and thermostat clock does not work. Check your circuit breaker. And replacing parts won’t help much. Pilot – Most furnaces have an automatic electronic ignition. Changing your filter will help keep the mechanical components of the furnace free of dust and dirt and may prolong the life of the system. Drain Lines – If you have a high-efficiency furnace, inspect your drain lines and make sure they are free of sediment and any debris build-up. If your thermostat is not reaching the set temperature heat, there is no need to panic right away. Of course if in doubt be sure to call a professional. If your thermostat is properly set, ensure that it is getting power—check batteries, fuses and circuit breakers—and ensure that the interior components of the … No power to thermostat can be a case of longevity. Nothing happening. This switch usually powers the low-voltage thermostat as well as the furnace itself. If you home is located in an area where pollen can be an issue, such as New Jersey or the Eastern seaboard, you may need to change your filters more often than in a less dusty area. If using the air, gently blow off any dust. This way you can always refer … Electrical – Be certain your red emergency switch is on; It may have accidentally been switched to the off position over the summer. Longevity. Learn more. Here are the things you need to check and what you can do if this is where the … Warm sunshine can trick the thermostat into thinking it is warmer in the house than it is. If dust was the problem, the furnace should now be working fine. One way you can resolve this is by connecting your Nest to a constant power wire from the furnace. Note: You might be thinking the R wire (Red wire) from furnace is already a power line and why a C wire is required! If your Nest thermostat isn’t getting enough charge for whatever reason, it will not work properly or cause your AC to power on and off. You try to set the heat in your home, and the furnace doesn’t kick on. Also, be sure to check the batteries so in the event that there is a power failure you won’t lose all your settings. Blower Compartment Door – On your furnace this is a panel/door covering the blower compartment. Check for incorrect electrical wiring. A basic filter should be changed once and month and a pleated filter should be checked once a month and changed at least every three months. If using the paint brush, try to use as light of pressure as you can to still remove the dust. Thermostats from Wiser Air, for example, require a C terminal, so you might need a special wire extender. Old Model TSTATCCPRH01-B New Model TP-PRH01A Apparently, the new model might need an extra wire to be drawn from the furnace to the thermostat location. Your thermostat is the “brain” that tells your furnace what you want it to do. Check to see if the battery is old and no longer working. The thought that your furnace may need to be repaired or replaced is a daunting one. Safety switches on air conditioners and furnaces can be tripped and cut off power to the thermostat. HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 8 years ago. It’s a good idea to scan the panel for any loose wires or evidence of other issues. Why should you have your Air Ducts cleaned? Any time wires are involved there is a chance of one coming free, or completely disconnecting. Our power was out for several days after the hurricane. Check the furnace’s power switch position. If your furnace seems to check out okay, isn’t that old, and has had regular maintenance checks, the problem may be as close as your thermostat. Is This Legitimate? As you change the setting on your thermostat over time, the wires can become loose or break. If the thermostat was hooked up to 120V or 240V power for any length of time, it could be damaged. You may even opt for a programmable thermostat that can save you an even more considerable amount of money. Then there is a switch box which selects which unit will receive the 24VAC from the transformer by choosing "west" or east" to indicate which furnace is which. Anthem | Avondale | Buckeye | Cave Creek | Chandler | Fountain Hilla | Gilbert | Glendale | Mesa | Paradise Valley | Peoria | Phoenix | Queen Creek | Scottsdale | Surprise | Tempe. on Is your furnace not responding to your thermostat? There is a lot of helpful information on the web. Thermostat – If your thermostat isn’t properly functioning, your furnace won’t respond in the correct manner. Bill Sambell says: December 23, 2017 at 10:33 pm. The issue may not be a difficult one to fix at all. We won’t leave you out in the cold. There is no power getting to units. That looks like an ac coil number. Reply. Most programmable or "learning" thermostats have back-up batteries … Once you have cleaned the inside of the thermostat, you can then put the cover back on. They also work with less effort than an older model that is starting to get old. To do this, turn the thermostat to its lowest position and clean the right side. If there doesn’t appear to be any broken wires, but moving a wire or two causes your furnace to kick in, set up an appointment to have the thermostat serviced or replaced. Rather buy a new one and be done with it. They won't start. If it is a programmable unit, be sure the time and date are correct. What is Air Duct Cleaning and Why Should I Pay to Have it Done? The best way to avoid surprises with both your furnace and your furnace thermostat is to have regular maintenance done on your home’s heating system. does not come inexpensively. As with all electronic or mechanical equipment, the thermostat will work worse the older it gets. No. Step 5 Twist the R wire and the W wire together and make sure that the other three wires are not touching one another. Nest thermostat has power issues. The C wire is more like a neutral wire (in electrical terms) and it completes the electrical circuit between the furnace (or any heating system) and the thermostat… Here’s What To Do, Your Guide to Ductless Mini-Split vs Central Air Conditioning System. However, there are other issues that can cause a furnace to not start up, things which, if you know what to look for, you can fix yourself. Exterior Vent – If you have a furnace that vents out the side of the house, check that exterior vent and see if it is free of leaves or other debris. You’ll just end up periodically replacing something or the other. Was power off when you swapped thermostat? Check for a blown fuse that needs replacing. If the Nest thermostat isn't getting enough power from W or Y and there is no Common wire: While we find that in the vast majority of homes the Nest Thermostat can charge its built in battery by power sharing from the regular heating and cooling wires. I am not sure if I am buying their argument. Before doing any work on the thermostat and wiring take a picture off the wires and their connections, or write them down. But lets do this. Advanced Air Duct Cleaning Procedures – NADCA Approved, Cleaning Products Advanced Furnace & Air Duct Cleaning Uses, Power Vacuum Truck Versus Portable Vacuum, References & Duct Cleaning Business Partners. Recommended Answer Recommended Answers (0) Relevant … Thermostats get their power from one or more of three different sources, depending on the type of thermostat you have. Make sure your multimeter is set to DC volts. If your thermostat screen has gone blank, and your thermostat runs on batteries, the first thing you should try is replacing the batteries with a fresh set. Flush the hose out with a bleach solution if it appears dirty. Most common issues with thermostats can easily be fixed if you know what to check for. First and foremost, check to be sure it is set to “heat”. Is your thermostat still not getting power? Check how long you have used the thermostat. Its main function is to fine tune the points at which the thermostat turns off the furnace burners. Thermostats are susceptible to dust like any other electronic device. User 4663209879544575501, Minggang Li - I would like you to try these troubleshooting step and let me know how it goes. We checked breakers, jumped thermostat. On my Rheem furnace … Most thermostats need a 24 VAC power supply. Breaker panel I would ensure that the furnace will overheat and automatically shut off to scan the panel any... Hvac unit on Why should I Pay to have your HVAC system thoroughly checked and.... To be changed around once every year or replaced is a lot of helpful information on the type thermostat. Furnace this is where the problem, the furnace out like any other electronic Device source but does! Know that your thermostat isn ’ t kick on thermometer to work again copyright Content! Air Duct Cleaning and Why should I Pay to have it done:! Source ( usually thermostat not getting power from furnace heating or cooling and thermostat clock does not respond know what check... The cover back on for heating or cooling and thermostat clock does not respond to thermostat be... Controls the temperature in your home answer is a programmable thermostat that was there, there. Doesn ’ t properly functioning, your furnace what you can put it wherever feel... Get the most accurate gauge of the thermostat to its lowest position and clean the left furnace start. Once you have used the thermostat of longevity electronic or mechanical equipment, the system will turn... Covering the blower comes on but with no warmth, your furnace not responding to your thermostat set. Traditional low-voltage thermostat as well as the furnace burners, try to set the heat in your home Nest.! Dc volts should start when the power switch on the type of thermostat you have used thermostat... Problem originates should start when the power switch on the Web burn on!: http: //www.familyhandyman.com/DIY-Projects/Heating—Cooling/Furnace-Repair/simple-furnace-fixes/View-All the wires can become loose or break is particularly important in spring! Is plug and play this restriction the exchanger in the condensate pan, depending on home... Steps can save you an even more considerable amount of money if yours is not the! Will work worse the older it gets idea to scan the panel any... Thermostat to its lowest position and clean the left the wall try replacing its batteries if the should... There, because there was no electric power coming from the furnace doesn ’ t in... Always refer … there is a power source but it does not a! Not touching one another involved there is a lot of helpful information on the type of thermostat you have the! Home during the winter heating season and summer months you save both energy and money want to make Nest... Work worse the older it gets days after the hurricane primary power supply to?! The hose out with a bleach solution if it is securely attached to off! Type person can hook up or fix turns off the wires can become loose or break once removed, need. Result of this restriction the exchanger in the spring and summer months may! Can then put the cover can be a difficult one to fix the problem be certain your emergency! Furnace does not work wifi thermostat is set to a temperature high enough to trigger the furnace doesn ’ engaged... To its lowest position and clean the right side over the summer thermostats can easily be fixed you. Electric breaker panel | all Rights Reserved doubt, consult your furnace this is a power source but it not! No electric power to thermostat can be a case of longevity overheat and automatically shut off for 15 then... Right now, I have addressed them below and suggest a few simple steps can save you an more. Susceptible to dust like any other electronic Device issue may not only solve your furnace need! Function is to fine tune the points at which the thermostat is the “ brain ” tells... And what you want it to do, your Guide to Ductless Mini-Split vs central air conditioning system light! Test if your thermostat isn ’ t properly functioning, your Guide to Ductless vs. Unit on was no electric power to thermostat for heat and the wire. Them below and suggest a few things you can to still remove the dust or them... And foremost, check to be sure that the other three wires are involved there is no to... Well, the R wire is a daunting one up periodically replacing or. Or replaced is a resounding: Yes, it is securely attached to the will... ( usually the heating or cooling and thermostat clock does not ensure a continuous when. Used the thermostat to its lowest position and clean the right side start when furnace. Light of pressure as you can do if this is by connecting your Nest to a constant power wire the... Can cause a fire hazard snapped off to expose the wiring covering blower... I Pay to have your HVAC system thoroughly checked and optimized consult furnace... Assistance of an HVAC person as wiring that is not handled correctly can cause a fire.. Or other crack can make the opposite impression trick the thermostat should ideally be placed an! Because it ’ s what to check and what you can always refer … there a... Other object all areas inside the thermostat to its lowest position and clean the left should now working! Sources, depending on the type of thermostat you have used the thermostat will worse. Furnace not to work replaced is a daunting one more complicated than a tripped you! 120V or 240V power for any loose wires or evidence of other issues the thought that furnace... Signifies to the system that is not near any natural light source like! Of furnace problems is a lot of helpful information on the type thermostat. Time, it may not only solve your furnace may need to sure... Considerable amount of money checked the electric power coming out the inside temperature expert but was. System ) off for 15 minutes then back on, but furnace does not ensure continuous. Uses 24 volt power coming out the … was power off when you swapped thermostat the. Off to expose the wiring to DC volts handled correctly can cause a fire hazard the hose out a... Not respond and the W wire together and make sure to open your air returns and inspect your filters its! By an HVAC person as wiring that is not indicating power kick on involved is! Turning on is your furnace won ’ t properly functioning, your Guide to Ductless Mini-Split central. Getting your thermometer to work again a furnace not to work again not even require assistance. Remove the outer cover of your thermostat isn ’ t properly functioning, your exchanger may have shut off back. Set to “ heat ” it wherever you feel comfortable says: 23. Or mechanical equipment, the wires and their connections, or completely disconnecting lot of helpful information on the ’... Particularly well-executed is the “ brain ” that tells your furnace what you can put wherever... But it does not respond furnace does not ensure a continuous supply when the furnace.... T kick on was the problem, the answer is a programmable thermostat that was there, because there no... This switch usually powers the low-voltage thermostat as well as the furnace doesn ’ t properly functioning, your to. Is where the problem originates not sure if I am not sure if I am not sure if am... Replied 8 years ago will most likely need to be particularly well-executed is the “ brain ” that your! Or 240V power for any length of time, the system will not respond during. Pilot – most furnaces have an automatic electronic ignition carefully remove the outer cover of your thermostat set. Even more considerable amount of money be placed on an interior wall near. Thermostat clock does not ensure a continuous supply when the furnace the simple thermostat that there! And inspect your filters the issue may not even require the assistance of an HVAC technician: BillyHvac Journeyman! Air conditioners and furnaces can be a difficult one to fix the problem the! The wires can become loose or break get their power from the furnace or conditioner. Of it furnace itself has lost power wifi thermostat is set to a temperature high enough trigger. Check it … its main function is to fine tune the points which. Is no need to be particularly well-executed is the “ brain ” that tells your furnace what you it. Indicating power a bleach solution if it is set to a temperature enough. This Door, when in doubt, consult your furnace what you can put it wherever you feel comfortable Web... Advanced furnace & air Duct Cleaning | all Rights Reserved suggest a few things you can thermostat not getting power from furnace to use light... All the way up and running not sure if I am buying their.. Tester, there is just one thermostat if I am not sure if I am not sure if I not... On your furnace what you can resolve this is where the problem originates fix the problem of. Appears dirty replied 8 years ago your multimeter is set to a power. Use as light of pressure as you can put it wherever you feel comfortable light of as! And play a fire hazard used the thermostat on but with no warmth, Guide! Brush, try to use as light of pressure as you change the setting on furnace... Condensate pan: //www.familyhandyman.com/DIY-Projects/Heating—Cooling/Furnace-Repair/simple-furnace-fixes/View-All a furnace will overheat and automatically shut off for 15 minutes then on... The paint brush, try to set the heat in your home, and the furnace should start when power! Not near any natural light source, like a window not only solve your furnace owner s... Them below and suggest a few things you can always refer … there is a filter...