Favorite Answer Sounds like you have a heat pump system and your compressor is not working. I tried resetting the Ecobee completely to no avail. Switched to emergency heat, still did not come on. Aux on the thermostat stands for auxiliary heat. However, if those ducts are leaky and travel through unconditioned areas, like the attic, they will pull in cold, dusty air, making it difficult for your heat pump to properly heat the air.The fix? AUX heat can also start if the pump can’t handle the outside heat on cold winter nights. Lockout is at 35. If the valve is malfunctioning, your heat pump will only work like an air conditioner—just cooling. Clean the outside unit and ensure that you’re not surrounding it with a fence or cover. From what I have read the Aux heat strips are supposed to turn on when this happens so cold air isn't blowing into my house. Check to see if your thermostat is set to ON or AUTO. If so, everything is fine. ecobee3 Lite Smart … Shovel away any snow that’s surrounding your heat pump's outdoor unit. I created this video with the YouTube Video Editor (http://www.youtube.com/editor) 1) Dirty outside unitIn heat mode, the heat pump’s outdoor unit uses liquid refrigerant to absorb heat from the air, and then transports that refrigerant inside to heat your home air.However, the outdoor unit struggles to absorb heat from the air if dust, leaves/grass or a fence block airflow over the unit’s refrigerant-filled coils.The fix? Your body is playing tricks on you (no, seriously). If so, reset it. But if your thermostat is not holding temperature then your home will feel cooler than it should. Participate in over 40 different forums and search/browse from nearly 3 million posts. The amount of heat just isn’t going to make a difference. Winter hit, and temps went into the 10s; auxiliary heat did not come on. Auxiliary heat kicks on when your heat pump can’t produce enough heat to warm your home by itself. Heat Pump Troubleshooting Problem #3: BLOWING COLD IN HEAT MODE. Heat pump works fine, as it should. But this problem im having only seems to happen when my thermostat is in away mode. The hot water cylinder should have the immersion heater wired independently, you should switch it on for hot water. It becomes necessary once the temperature drops below a certain point. Auxiliary heat/ Emergency heat helps the heat pump keep up when cold outside or the temperature differential on the thermostat is large. I got my heat set to 20C but its looking like its not kicking on until about 19 rather than 19.7 (threshold is set to .3). This is different from a furnace, which can blast hot air over 100°F.Do this: Go to your thermostat and see if your home’s temperature is reaching the set temperature and shutting off. Heat Pump Balance can automatically turn the heat on early to reduce AUX heat use as much as possible and get to your target temperature on time. If you have an older furnace with a standing pilot light, it’s possible … Invest a few dollars in new high-quality air filters before you try anything else. Auixiliary Heat will turn on automatically when heat can no longer efficiently transfer heat from the outside air to heat pump. Using a heat pump for cooling and heat down to about 40ºF works well but when the weather gets colder a back up auxiliary system -- preferably gas or oil -- kicks in and the house warms comfortably. If your aux heat indicator is on, it means your heat pump needs a little help reaching its target temperature setting. But to help you understand this switch better, let’s take a quick look at how a heat pump works... A brief explanation of how your heat pump works During the winter, your heat pump is basically an air conditioner in reverse. Opting for a chillier home can oftentimes make a major difference in whether your auxiliary heat constantly runs or not. But this morning I looked at the display and it says "aux heat on", but there is no heat blowing. So it relies on an auxiliary (AUX) heat coil (like the ones you see in a toaster) or a furnace to heat your home. Watch this video on how a heat pump works, 11 Ways Pippin Brothers Can Help You Reduce Your Energy Bills. A technician will need to repair the auxiliary heat. Does Auxiliary Heat Cost More to Run? 11-26-2010, 10:48 PM #5. hedtedjr. Auxiliary heat is the electric heat strip in your air handler that is supplemental heat. When my outside unit is defrosting on heat mode my inside unit is blowing air conditioned cold air into my house. POSSIBLE PROBLEM & DESCRIPTION Clogged Air Filter/Dirty Coil/Restricted Ductwork. Next, check your outdoor unit is not iced over (see Heat Pump Troubleshooting Problem #1). Your heat pump has one job in winter: Keep you warm. The fix? The furnace has a difficult time generating heat if there isn’t enough airflow into the unit. Components – Coils, Heaters, Motors, etc. First of all, just check and make sure your unit was not accidentally switched to a/c mode. If the heat pump is unable to produce sufficient heat to satisfy the thermostat temperature setting, the auxiliary heat (2nd stage) is activated to work in conjunction with the heat pump. I double checked wiring and it is all as I left it. Repair guy came out, said the drain tub from my fan, the nipple on the end was clogged. The fix? This is when the outside is around 35-40 degrees and the indoor temperature is around three degrees cooler than the thermostat setting. I have a Trane single stage heat pump and an Ecobee 3. If the heat pump turns on when you want cool air, but not for heat, this is likely the cause. It generally takes 30 minutes for the defroster to do its job, but it needs air flow to do so. If you live in colder states with harsh winters, the outside temperature can mess with your heat pump. Mastertherm. But this morning I looked at the display and it says "aux heat on", but there is no heat blowing. Aux heat comes from the same heat source as emergency heat, but aux heat works together with your heat pump, so it’s less expensive than emergency heat. A Honeywell thermostat not turning on heat can happen for many reasons. Gain access to our free AOP (Ask a Professional) Section to get real answers for your questions. Auxiliary heat is when the secondary heat source turns on automatically. you possibly hooked it up wrong. ecobee3 Lite 2 Generation Smart Thermostat – The Budget Option. But if you have low refrigerant charge (due to a leak, most likely) then it’s not bringing in enough heat to warm your air. As we mentioned above, AUX heat usually costs up to 50% more than heat transfer , which means if your system is running on AUX heat when it shouldn’t be, your heating bill is likely going to be a lot higher than you’d like it to be. The auxiliary heat (electric resistance heat, or back-up heat) is minimized since it is more expensive. AC worked fine all summer, but not the heat. Too bad it’s failing spectacularly! Think of it like trying to pour a thimble of hot water on a glacier. And, in cold weather, heat pumps tend to blow warm air out at 95°F.While that’s warm enough to raise the temperature of your home, it feels cool relative to your body temperature. Common problem in residential HVAC air handlers is the auxiliary heating has a contactor that will go bad and start making a loud buzzing noise. Sometimes thermostats will display “auxiliary heat” or “aux heat” on the wall display in your home when this occurs. 661CJ036-C AUX heat light is on at thermostat and no heat from heat pump, light stays on only in heat mode. If you are not experiencing one of the 3 situations listed above but your heat pump is running on AUX heat, your heat pump likely needs a professional repair. Problem. Snow and ice will prevent that. An ‘*’ should have moved from Auto to your new selection. The fix? As the name indicates, auxiliary heat, or emergency heat depending on your system, is just a secondary heat source. Ask Our Pros-Owner Assistance - NO DIY advice will be given. Thermostat - Answered by a verified HVAC Technician Clean the pilot ignitor Aux heat not turning on during defrost cycle. It will also need to be replaced by a technician. Sign up for our newsletter to receive seasonal updates, news and tips. A Honeywell thermostat can help keep your home at a comfortable temperature. A faulty thermostat, a broken heating system, power losses, damaged wiring, et al. A technician will need to find the leaks and seal them. Here’s how it works. Emergency heat is when you turn on a secondary heat source manually. If that isn’t the problem, call a technician for help.4) Auxiliary heat is malfunctioningBelow 40 degrees, your heat pump struggles to heat your home. (Note: when doing my humidifier work, I … Broken reversing valve: As the name suggests, the reversing valve allows the heat pump to work as both a heater and an air conditioner by reversing the direction of the refrigerant. fixed. Suggestions? Our 20th year anniversary is May 21, 2020. Press down button (-) to go to Aux or Add Heat. The fix? Let’s explain each of these.Why your body may be tricking youYour heat pump may be working fine, but the air just feels cool to lukewarm.Here’s why: The average body temperature is around 98.6 °F. Post photos, respond to polls and access other special features. Suggestions? Heat pump not heating Emergency heat is the same thing as auxiliary heat. Add a few layers to your outfit or sleep with an extra blanket to keep your furnace from working so hard. A technician will need to repair the reversing valve.6) Low refrigerant chargeTo warm your cold inside air, the heat pump’s outdoor unit uses liquid refrigerant to absorb heat from the outside air. A technician will need to find the refrigerant leak and add a refrigerant charge.7) Return duct leakageReturn ductwork is the series of pathways that return the cold air from your home back to the heat pump to be heated. Meaning no hot air for you.The fix? The problem occurs when the temperature drops below freezing at 32° F, as there isn’t enough heat in the air. Your heat pump switches to AUX heat because it can no longer pull in heat from the outdoor air to warm your home. When the heat pump can no longer maintain the desired temperature setting, then the auxiliary heat must come on to assist. Because AUX heat is so expensive, running the heat pump longer can be cheaper than using AUX heat. Check the Standing Pilot. Here, we list some of these causes, and offer repair tips to solve these no-heat issues. 5) Bad reversing valveA reversing valve is the part that allows the heat pump to move from “COOL” to “HEAT” mode. Similar to when you turn on the faucet before you get into the shower, you may need to wait for a bit for that air to heat up. If you just turned on the heat, hot air may not yet be flowing through your air ducts. When I have the heat on, the Ecobee indicates that the "running equipment" is the fan AND heat (even though the heat is not on). Mastertherm Units do not have this function. Let’s say it is 28 degrees outside, the heat pump is running 100% as designed, the home is maintaining 72 degrees and all the heat made so far is cheap heat. The AUX heat setting on an HVAC unit usually turns on when you need heat fast. 4) Auxiliary heat is malfunctioning Below 40 degrees, your heat pump struggles to heat your home. If not, read the next section about common heat pump malfunctions.7 common reasons a heat pump blows cold airBEFORE READING FURTHER: Watch this video on how a heat pump works. Therefore, if it’s below 40 outside and the auxiliary heat isn’t working, then your heat pump will just blow lukewarm or cool air. The last time I used the heat, on the honeywell screen, it displayed "heat on" and worked. But if the outdoor unit has no power, your blower just blows cold air over a cold coil. My thermostat says heat on but nothing is blowing from the vents. Unlike a furnace, a heat pump doesn’t create its own heat but takes heat from the outside air. 3) No power to the outdoor unitThe outdoor unit nabs heat from the outside air and transports it to the inside coil where the blower then distributes your cold air over that hot coil. It will make all our explanations make way more sense. Honeywell says aux heat on, but no heat, help? Yes... we are 20 years old. The majority of the "no heat" calls with a heat pump, the auxiliary heaters have failed to operate. If not, your system may have a valve problem, a refrigerant charge issue, or a compressor problem. Press right button to select. I'm quite technically inclined but what is the first - Answered by a verified HVAC Technician We use cookies to give you the best possible experience on our website. Contractors call it “duct sealing”.Need a heat pump repair in Lawton, OK area? Accessories – Pumps, Cooling Towers, Evap Condensers, etc, Components – Valves, Motors, Condensers, Evaporators, etc, Duct Systems Design, Installation & Practice, Piping Systems Design, Installation & Practice, Control System Design, Installation & Practice, Welcome from the Editor & Electrical Forum Rules, Pro's Forum: National Electrical Code (NEC), Pro's Forum: Calculations & Electrical Theory, Pro's Forum: Electrical Business & Marketing. 207 SE D Avenue - Lawton, Oklahoma 73501 | 580-699-5660, © Copyright 2021, Pippin Brothers Home Services | Privacy Policy, 7 common reasons a heat pump blows cold air. For the most part, you can stop the auxiliary heat from coming on by making a few lifestyle changes in your daily routine. Now let’s say it cools to 26 degrees outside. If the heat pump ices over, AUX heat will kick in more often, in order to compensate and raise the temperature to the desired levels. Need a heat pump repair in Lawton, OK area? Your Fan Is On. 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All new … First, we look at what might have happened with the Honeywell thermostat itself. There are a few reasons a thermostat may not be maintaining its heat setting which can be … This means, when the temperatures start to drop and your heat pump cannot produce enough hot air to warm your home the aux heat will turn on. When that happens, your system switches to emergency heat, … Emergency heat works. When the weather is really cold (<35 degrees), the thermostat says "aux heat source" (or something like that) when the heat pump can't support the heating needs in the cold weather, as it's trying to use the aux heat source (gas), but the furnace does not kick on with gas heat. The #1 question asked by NEW MEMBERS. It’s also possible that a … If this secondary heating system is constantly running, it may mean that the weather outside is very cold or that the thermostat is set higher than normal. Check the breaker box to see if the outdoor unit’s circuit breaker was tripped. 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On heat mode my inside unit is defrosting on heat can happen for many reasons is in away mode for... Blowing air conditioned cold air into my house, this is likely the cause heat! The wall display in your home can oftentimes make a major difference in whether your auxiliary heat, this when... Cools to 26 degrees outside respond to polls and access other special features also need to be replaced a!

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