Lock out or Reset. I bought it after researching its capabilities, including the data available. Heating or cooling system does not respond • Touch SYSTEM to set system to Heat. Nest uses wi-fi only and gets the outdoor temp from the nation weather service which gets the temp from the local airport. It seemed to work fine. The aux heat wire is connected to W2 Aux. Yes... we are 20 years old. Help online: http://support.nest.com/certified, Nest Certified Professional support: 1-855-VIP-NEST (1-855-847-6378). Connect your Nest Thermostats, Nest Cams, Nest Doorbell, or Nest devices and add Nest … I remember the earlier Nest stats (version 1 or 2), would not allow you to lock out the back up heat very low, maybe 50 degrees or so. High balance point is the temp at which you don't need the aux heaters to help the heat pup maintain set temp. That actually worked to keep the compressor running into lower temps. ... For instance, you'll see the Nest Leaf to let you know that you've selected an energy-saving temperature. Compressor lock out temp is calculated by Nest and outdoor temp, but seems set to 40F (cannot be changed). Could be 15, 20, 24 degrees F etc. If you want to be able to keep the compressor running and lock out the backup heat, you need the wi-fi so that the thermostat will "know" the outdoor temperature. Nothing could get the fan to turn in other than heat mode. Add a PIN From the Nest Thermostat To set up a passcode right from the Nest Thermostat itself, start by pushing on the unit to bring up the home screen main menu and select “Settings”. http://hvac-talk.com/vbb/showthread.php?t=1241, http://hvac-talk.com/vbb/showthread.php?t=116113. than the heat pump compressor) is referred to as the "Compressor Lockout" setting in the website and app interfaces. I have just begun using the new Device Access API, and I find the list of traits returned for the Nest Thermostat to be extremely limited compared with what Nest provided when I purchased my Thermostat before Google took over. Otherwise it has no idea when to keep the backup heat from coming on. Heat pump compressor lockout temperature? Select “Lock” when … So lets say Balance point is 25* F and Compressor lockout is 5F*, then: Above 25*F Only Heatpump stage 1 and 2 can run, Aux heat will not engage to help meet temperature setpoint. In other words if your aux lockout doesn't go lower than 40 degrees then your compressor lockout is set at 30 degrees. 1 Like seannymurrs (Sean Murray) November 5, 2014, 12:31pm It is on a split system Trane heat pump. I have a NEST thermostat and for some reason it is not turning on our air conditioner. For heatpump systems, its also crucial to know and set the minimum outdoor temperature that the heat pump can run with - otherwise the thermostat will lock out the heatpump and change over to aux heat as the weather outside will be too cold to run the heatpump unit that's sitting outside. Basically automation is part of a subject called control systems. There are two serial numbers for each Nest – one for the base half and one for what I assume is the LCD half. Smart thermostats have many advanced features that include internet connectivity, downloadable energy tools and access to weather data. Low setting is suppose to be the temp at which your heat pump uses more electric then the strip heaters. In modern days where automation has reached the residential and is no longer the norm of only industries and factories there are certain terms or technical jargon that people still struggle with. What does compressor lockout mean? You can view them via the “Settings->Technical Info” menu on the Nest itself or … The Food Stamp Program, administered by the U.S. Department of Agriculture, is proud to be distributing the greatest amount of free meals and stamps EVER. When it is damaged, it will … The #1 question asked by NEW MEMBERS. OK, thanks. It squeezes the refrigerant from your unit and raises its pressure and temperature, thus pushing out to cool the air in your unit. Wait 5 minutes for the system to restart safely, without damage to the compressor. • … 6 Indicates a malfunction with the system. The nest itself switches to away mode when I tap the “Present” button, but the button does not toggle in the app, and pushing the button again does not switch the Nest back to home mode. For Nest users who have migrated to a Google Account, the Nest Web APIs work only when the home.nest.com session stays active (you should not log off from your active session, but you can close the browser or turn off desktop/mobile ). You will need to lower the compressor lockout function 350 to lower the aux lockout on 360. Nest – Smart Thermostat for Heat Pumps Nest 3rd gen model will turn ON the aux heat system only when it is necessary (only when the outside temperature falls below the aux heat lockout temperature). These features provide homeowners with increased control of their home’s heating and cooling energy usage. GitHub Gist: instantly share code, notes, and snippets. Both options are untested, as I only have one nest. But on the Nest Thermostat itself, the term "Lockout" is not used, instead you see "Use the heat pump compressor when the outdoor temperature is above". The idea is that you have a control parameter(in our case temperature) and […] By default, Nest will lock out the Setting compressor and auxiliary heater when the outdoor temperature is above 50°F but will not lock out auxiliary lockout temperatures the compressor at any temperature. One is to use the “–index” argument. Get contact info, branch hours, directions, and find out whats happening at the branch. # 7 Last night I was awakened by what sounded like the compressor getting ready to explode. Compressor Damage. Sign in to the Nest app in your web browser with your Google Account or non-migrated Nest Account. I’ve been seeing more Wifi issues recently with my Nest thermostats. Compressor lock-out switches are also sometimes used in heating and air-conditioning devices. I've had my Nest for 2 years now and generally it does what I want. The second is the heat pump lock out temperature, when the location is below this temperature, it will not use the heat pump, and just use Aux. GoogleNestDataFields1. Hours: 5am-9pm (pacific), 8am-midnight (eastern). Last summer I installed a customer supplied Nest thermostat. I had Nest support go through this with me and he just went off "Nest Sense" and to manual system where I set the compressor lockout … Units might come with a switch that automatically shuts the unit down when a home or other structure reaches, or drops to, a certain temperature. Post photos, respond to polls and access other special features. Ask Our Pros-Owner Assistance - NO DIY advice will be given. Click to see full answer. I don’t see a pattern to the problem, and it seems to randomly affect all of them (sometimes at the same time, but often just one). One minor point regarding the base serial number you mention that you said isn’t correct. The temperature below which you want to use Auxiliary heat (rather than the heat pump compressor) is referred to as the "Compressor Lockout" setting in the website and app interfaces. If Wi-Fi is not enabled, Auxiliary heat will come on automatically when it takes longer than expected to reach the current target temperature There may be one or more loose wire connections in … The lockout temperatures are only enforced when the Nest Thermostat is connected to Wi-Fi so it can track outdoor temperatures. What you would have to do is fool the thermostat and tell it that you were a few hundred miles south of where you really were. The Thermostat belongs to me. But on the Nest Thermostat itself, the term "Lockout" is not used, instead you see "Use the heat pump compressor when the outdoor temperature is Participate in over 40 different forums and search/browse from nearly 3 million posts. The first is the Aux lock-out temperature, when the location is above this temperature, it will not use Aux. The system seems to be running the heat pump down to the teens or below and when the unit ices up it must be running in reverse to try to de-ice. Maybe on anything but a Nest. Some decisions for some systems are made based on outdoor temperature (heat pump Compressor lockout, heat pump Emergency heat lockout, Window frost protection, ventilation lockout) and, if connected to Wi-Fi, the thermostat will pick up outdoor temperature and humidity from the internet. RULES for AOP - Owner Assistance and Contractors, The ARPA Zone/Open Membership Discussion Forums, Energy Efficiency and Building Performance Discussion NEW, Carnak Zone/Locked Areas - For Professional Member Only, Pro Forum: Refrigerants and EPA regulations **NEW, Pro Forum: Residential Refrigeration and Appliances **NEW, Pro Forum: Equipment Recalls and Bulletins **NEW, Pro's Forum: Building Science Discussions, Educational Forums - Open for all in the industry, Welcome to HVAC-Talk's Educational Forums, How to Submit Links, Articles and Quiz Questions, Frequently Asked Questions About Submissions, Physics, Thermodynamics, Fluid Flow and Combustion, Educational, Training & Reference Information, Manufacturer's Technical Information Links, Electrical Theory, Circuits and Electronics, HVACR Equipment, Components & Accessories, Accessories – Humidifiers, Air Cleaners, HRUs, Fans, Filters, etc. Scroll to the right and select “Lock”. My settings were just to monitor and adjust as the system worked in various temps. Therefore, the thermostat is likely to sense that the room is already cool and will turn the AC OFF. Our 20th year anniversary is May 21, 2020. The more reliable way is probably to use the “–serial” argument, as this would be tolerant if nest ever changes the ordering of the thermostats in the list. The compressor is a kind of “refrigerator” that dehumidifies and cools your interior. If the Nest is set to operate in the Airwave mode, the compressor gets turned OFF but the fan continues to keep running and dispersing cooled air. Components – Coils, Heaters, Motors, etc. 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. I’ve provided two ways to do it. Thanks for sharing these details and I'm sorry to hear you've been experiencing issues with your Nest Thermostat. There are two different lockout temperatures that are set on the Nest. AFAIK, the Nest only supports WIFI outdoor temps over the interweb. After I installed the stat I ran it through the modes to make sure it would function. By default Nest will activate the heat pump balance, which then automatically determines the aux heat lockout temperature. For example, “–index 1” to use the second nest. Gain access to our free AOP (Ask a Professional) Section to get real answers for your questions. No problems with heat or cool until this morning. Overheating caused ... Snowflake and Flame are displayed (flashing) if the thermostat is in lockout mode to prevent the compressor from cycling too quickly. There is a 10 degree dead zone between the aux lockout and compressor lockout. Make sure the temperature is set higher than the Inside temperature. • Compressor protection feature is engaged. Welcome to Grainger Branch #232 in Madison Heights,Michigan. Manual will be automatically added to "My Manuals", nest Learning Thermostat Installation Manual, Thermostat nest Learning Thermostat Installation Manual, Thermostat Nest Learning Thermostat Installation Manual, Thermostat nest Learning Installation & Configuration Manual, Thermostat nest Learning Thermostat D3 Installation Manual, Thermostat nest Thermostat E Installation Manual, Page 10: Wiring Diagrams: Conventional Systems, Page 14: Wiring Diagrams: Heat Pump Systems, Page 16: 2 Stage Heat Pump (Aux/Emergency Heat), Page 17: Wiring Diagrams: Humidifiers And Dehumidifiers, Page 21: How Do You Configure Special Systems, Page 26: Wiring Error Quick Reference Guide, Page 33: Quick Troubleshooting Reference Guide. In this video we go over the heat pump balance feature in the programming of the NEST thermostat. With this extreme cold, however, I've hit a problem. 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