Ecobee fan setting

The fan on the Dell GX620 computer is designed to pull the heat away from the central processing unit (CPU) to keep the processor cooled down so it can work properly. If the fan we...I just upgraded my Ecobee 3 thermostat to the latest Ecobee 5 and noticed this peculiar thing happening. Basically, with my current temperature setting on a Hold temperature (different from my regularly scheduled set point temperature) and I manually turn on the circulation fan, the thermostat overrides that Hold temperature and runs the thermostat …Next, press the power button on your thermostat to switch it off. Unmount your thermostat from the wall. This will reveal the wiring at the back of the device. Locate the C-wire and unplug it from the backplate. In most cases, the C wire has a red color. Wait 5 minutes. Now, re-plug the C wire to the backplate.If you’re a big-time fan of the NBA, lack of access to a television set can be a painful experience -- especially during an important game. But this unfortunate scenario doesn’t al...Comfort Setting icons. Alert icons. Home Screen icons. Menu icons. Navigation & Button icons. System icons. Weather icons. Wi-Fi icons.The ecobee will divide the "Fan Min On time" you select throughout each hour. If the Fan Min On Time is set for 15 minutes or lower, the fan will operate in two separate segments across the hour; if the Fan Min On Time is set for 20 minutes or higher, the fan will run in four equal segments across the hour. Good information here.

SOLVED - I was able to solve the problem by going to installation settings, equipment, reconfigure equipment and setting through the setup process again. On the last set I choose Ecobee to control the fan. After that I could control the fan without the heat. In my case the fan is still noisy.The hvac usually controls the fan but if i manually turn on the fan on superhumid days the ac makes most of my house comfortable. Idealy I would set it so heat fan is hvac, summer fan is thermostat. If your furnace is designed to turn on the fan when there is a call for heat, then you want the fan controlled by HVAC.There are some surprising money-saving tips and ideas in 'Stranger Things.' Check them out and start saving moolah today. Stranger Things, the critically acclaimed science-fiction-...If Configure Staging is set to Automatically. When your thermostat's Configure Staging setting is set to Automatically, you can adjust the Aux Savings Optimization value to lower aux heat usage. 2°F / 1.1°C - sacrifice savings for comfort. 2°F / 1.1°C - sacrifice savings for comfort. 2.3°F / 1.3°C - sacrifice a bit of savings for comfort. One global minimum fan run time would imply the fan is running on a semi permanent basis. What is should really do is circulate air based on the demand of the occupancy. Another reason for minimum fan run time is that it can distribute the temperature evenly around the space and can result in prevent the heat or ac from running. The fan will always run when the A/C or Heat runs. Those systems can’t run without the fan running. It defeats the purpose of your HVAC system if the fan does not run when those system are called upon to run. The setting to run the fan X mins/hr is to run the fan a certain number of minutes per hour whether the A/C or Heat is called or not. During setup, the ecobee thermostat will ask for the relay state information for your dehumidifier. The relay will be either open or closed. This information can be found in your dehumidifier owner's manual. Edit your dehumidifier’s settings on thermostat. Go to Main Menu > General > Settings > Installation Settings > Equipment > Dehumidifier

We now have 24v control smart thermostats like Ecobee, Cor, Nest, and Lyric. These have a lot more flexibility in how they can be set up rather than having a single, designated dehumidification terminal. I am a big fan of EcoBee for many reasons, including their Alexa integration, remote wireless sensors, and application flexibility. When I have the fan setting set to ecobee controlled the blower motor comes on immediately while the inducer runs, then the blower turns off while the flames come on, then turns back on after flames are sensed When I have it set to hvac controlled the blower motor stays off initially and runs once the flames are on Jan 15, 2021 ... Threshold Settings for ecobee® Thermostats. SumZero Energy Systems ... How to use the Ecobee Thermostat: Adjust the heat & AC modes and change the ...Furnaces have a temperature sensor for safety. If the furnace overheats, it will turn off the heating element but may continue to run the fan blower. Common causes: Running for extended periods: Lower heat setpoints in very cold weather. Reduced airflow: Check and replace/clean clogged air filters. Dirt build-up: Have a technician deep clean if ...A wire connected to the Y3 terminal on your current thermostat indicates that you have a three-stage cooling system. ecobee thermostats do not support three stages of cooling. One workaround is to place a jumper between the Y2 and Y3 terminals on your furnace’s control board.

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Here you will see the temperature that your Smart Thermostat is heating or cooling to. You’ll also see other things that your Smart Thermostat is doing, like running the fan, setting temperature holds, and more. Pressing the information bubble brings up the Temperature selector, where you can manually adjust the temperature. Adam McCann, WalletHub Financial WriterFeb 6, 2023 For many people, football is far more than just a game: it’s a sacred American tradition. These fans aren’t just spectators but a...One of the frustrating situations Ecobee users may encounter is the Ecobee says no equipment running but fan is on. In this comprehensive guide, we will delve into this common issue, shedding light on what it means, its potential causes, and most importantly, how to troubleshoot and resolve it. ... For instance, if the thermostat is set to cool ...The ecobee residential Web Portal is a convenient and free to use web browser interface for accessing and controlling your ecobee thermostats. NOTE: The residential Web Portal is designed to accommodate up to 10 …

If you’re a fan of nativity sets, you know that they can be a beautiful addition to your holiday decor. However, sometimes these sets can come with a hefty price tag. That’s where ...Welcome to an exploration of Ecobee fan runtime. In this discussion, we will delve into the essential aspects of how Ecobee’s fan runtime operates. Ecobee , a prominent name in smart thermostats , has incorporated a feature that controls the runtime of the HVAC (heating, ventilation, and air conditioning) system’s fan.Any time the humidity affects the temperature reading on your thermostat by more than 1ºF, the eco+ icon will appear on the screen below the displayed temperature. If eco+ is enabled, you have the option to disable the feels like feature of the eco+ feature set. Just go to the main menu, the eco+ option should be at the top, and then scroll to ...Homeowners should use the “on” switch for the fan of an air conditioning unit sparingly, running the fan for a few minutes after the cooling part of the unit has stopped, according...Setting the fan option on your Ecobee Thermostat is a simple matter of toggling it between “Auto” and “On.” Switching the Ecobee Thermostat setting to “Auto” …You can also set your ecobee Fan to operate at a certain speed. The property is only available to ecobees with a multi-fan speed configuration. You can set ‘Fan Hold’ for different time frames. The least time segment is 15 minutes. You can also set it at 30 minutes, 45 minutes, 1 hour, or even two hours.You should be able to go into the ecobee app and make a HomeKit scene that sets the mode to “off” but the fan to “on”. Has to be done in the ecobee app because home app doesn’t have access to the fan but once the scene is created Siri can set it This should be possible but unfortunately I can’t get my scenes to work the fan reliably because of an ecobee software issue. Setting a Schedule. On the ecobee App. Tap the Thermostat > Menu > then, Schedule. Once you locate the schedule menu, tap on any of the days listed at the top to view your schedule for that specific day. If you wish to change the start time of a particular Activity, simply tap on the Activity (Home, Away, or Sleep) and adjust the time. When you manually adjust the temperature, your ecobee will go into a Hold mode. Your set schedule will be ignored until the hold is dismissed or expires. During a hold, a bubble displaying the Hold temperature and how long the hold is active for will appear on the home screen. Good to know:Adam McCann, WalletHub Financial WriterFeb 6, 2023 For many people, football is far more than just a game: it’s a sacred American tradition. These fans aren’t just spectators but a... Here’s how to add the ecobee app widget: 1. On your phone’s Home Screen, touch and hold an empty area of the screen until the apps jiggle. 2. Tap the Plus icon in the upper-left corner. 3. Scroll down and select the ecobee widget. 4. Scroll left and right to see the different options. 5. When you see the widget you want, select Add widget. 6. Access Sytem Monitor by signing in to ecobee.com, opening the Home IQ portal, and selecting System Monitor. To scroll through the reports, select and drag the graph to the left or right. ... "Heat/Cool" shows a value of 3:45m and "Fan" shows a value of 0:45m. This means that during the 5:05 PM to 5:10 PM block, the ecobee ran the furnace for 3 ...

An average PSC style fan takes about 0.4W per CFM of flow if your ductwork is reasonably sized for the fan. Even on the 2-ton version of my 96% AFUE rated furnace/blower, the fan will flow at least 750 CFM in its lowest setting (fan only). Thats 300W minimum for a 2-ton version of a pretty nice and brand new air handler.

Set ecobee fan run time with temp/binary sensor threshold. Just started out with Home Assistant and trying to get an ecobee thermostat to change the fan minimum on time when the attic temperature is within a certain threshold (AC/furnace and ducting are in the attic, so can't let unconditioned air circulate during the day).Jun 27, 2018 ... Comments186 ; ecobee Pro Advanced Setup (3 of 5). Tec Tube · 123K views ; How To Use Ecobee Thermostat Premium (Ecobee Smart Thermostat Manual).On the ecobee App. Tap Home > Tap on the Thermostat > Tap the Menu > Tap on eco+ then drag the slider to your desired saving level. If an eco+ feature is running at an inconvenient time, you may temporarily disable eco+. On the thermostat home screen. Tap the Arrow icon next to “ eco+ is on ” and select End eco+ for today.Short Answer. To program your ecobee 3 lite, first install the ecobee app and create an account. Once your account is set up, connect the ecobee 3 lite to your home’s Wi-Fi network. Open the app and follow the instructions to connect the thermostat to your home. Once the thermostat is connected, you can program it to your desired settings.How to configure the 3 fan speed for ecobee - YouTube. Dropairs. 566 subscribers. Subscribed. 58. 8.6K views 2 years ago NEW YORK. ecobee thermostat compatibility Works with the following...The ability to set a specified fan speed if your ecobee is configured for multi-speed fan support (for more information on multi-speed fan installations, please see this article) Fan Holds can be set for the following durations: 15 minutes, 30 minutes, 45 minutes, 1 hour, 2 hours, or Indefinitely (keeps the ecobee in ON fan mode until the Hold ...By kicking the fan on periodically (mine is set for I think 20 min/hr; the ecobee divides this into 4 segments so my fan will run 5 minutes out of every 15), the fan will 'mix' the air in the house, which has the effect of pulling some of the cooler air from the basement and the east side rooms and pushing into the rooms warmed by the sun. In the Settings-> Devices & Services menu, click + and then select “ecobee” from the pop-up menu. In the pop-up box, enter the API key you obtained from ecobee’s developer portal . In the next pop-up box, you will be presented with a unique 8 character code separated by a dash (format: XXXX-XXXX), which you will need to authorize in the ... Running the Fan. These commands will not work if the ecobee is set to OFF system mode "Alexa, ask ecobee to turn the fan on" "Alexa, ask ecobee to turn the fan on in the " Changing System Mode "Alexa, ask ecobee to switch to Heat/Cool/Auto/OFF mode" "Alexa, ask ecobee to switch to Heat/Cool/Auto/OFF mode in the " Going on VacationFeb 10, 2023 · The low-speed fan wire (usually known as G, Gl, or G1) must go to G on the ecobee; The medium-speed fan wire (usually known as G2 or Gm) must go to Y2 on the ecobee; The high-speed fan wire (usually known as G3 or Gh) must go to W2 on the ecobee; Note: If the Smart Thermostat has been enhanced, it must go to PEK+

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To turn on the fan only on an ecobee thermostat, you can use the Smart Home/Away feature. First, go to the main menu on the ecobee thermostat and select Smart Home/Away. Then, select Fan Only from the menu options. Finally, confirm your selection and the fan will start running. You can also use the ecobee mobile app to turn on the fan only from ... Press to increase the temperature set point by 1°F (0.5°C). Press to decrease the temperature set point by 1°F (0.5°C). If the Smart Si thermostat is set to Auto mode, press to select the Cool setting. If the Smart Si thermostat is set to Auto mode, press to select the Heat setting. Advertisement. On the main screen hit the little cog wheel on the bottom right. Then set the fan to on instead of auto. If that still doesn't work you either don't have it wired up to have that option or that's why your system iced up (I'm assuming) because …Ecobee is a prominent brand in the smart home technology sector, specializing in smart thermostats and other innovative devices aimed at enhancing energy efficiency and home comfort. Renowned for their user-friendly interfaces and advanced features like remote access and room sensors, Ecobee thermostats enable homeowners to manage their heating and cooling systems efficiently, saving both ... By default, you have three settings: Home, Away, and Sleep. Each setting is designed for different times and activities. For example, when you're at home, your ecobee thermostat can turn on the heat if it gets colder than 70°F (21°C) or activate the cooling if it gets warmer than 78°F (25°C). ecobee Optimize: Turn this option on to tell the thermostat to automatically set your heat temperature, cool temperature, system mode and furnace fan settings to maximize energy conservation while you are away. Turn this option off to manually configure heat temperature, cool temperature and fan settings.That way you are telling Ecobee that there is a wire in W1 when in fact there is none. Then switch Stage 2 delta temperature to 1F. Read also: How to set ecobee thermostat. Furnace fails to ignite. Your Ecobee wont turn on heat if your furnace fails to ignite. Go down to the furnace and check through the little glass if there is light linking.Another common thing that could make your Ecobee not to blow cold air is your fan settings. Double-check your thermostat and ensure that your fan is set to auto and not to ‘on.’. If your fan is set to on, it will continue to blow air when your air conditioner is not cooling. This could explain why the air that’s blowing out of vents is ...The ecobee smart thermostat can control the humidity in your home. Most of its power to control your humidity comes down to your HVAC system. Your ecobee is a very intelligent brain that you can plug into your existing HVAC system. The ecobee comes packed with features that can min/max your ability to control your home, but if your …By kicking the fan on periodically (mine is set for I think 20 min/hr; the ecobee divides this into 4 segments so my fan will run 5 minutes out of every 15), the fan will 'mix' the air in the house, which has the effect of pulling some of the cooler air from the basement and the east side rooms and pushing into the rooms warmed by the sun. Your ecobee thermostat's schedule is made up of Activities and Comfort Settings. Activities determine the time and length of a Comfort Setting, and the Comfort Setting determines the temperature setpoints and fan behaviour your ecobee will follow during the activity. The ecobee comes with three default Comfort Settings Home, Away and Sleep. ….

A subreddit for ecobee and all their smart home products. ... I tried setting a min fan time for each comfort setting, thinking the fan should run each hour for that time. No luck. The unit shows Equipment running now Fan, but it never runs. Builder is avoiding question, wonder if something is wrong. ...For many small businesses this year, it has truly hit the fan. Many wonder: what do I do next? An upcoming webinar tackles that very important question. Has it hit the fan for you ...I have a 2-stage Trane and and found these to be the optimal settings: 1.5 degree heat differential. 2 degree stage 1 to stage 2 threshold (stage 2 will fire up immediately if greater than 2 degree difference between indoor temp and set point). These settings basically only use stage 2 on morning recovery (67 to 70) and on very cold days when ...A subreddit for ecobee and all their smart home products. ... I tried setting a min fan time for each comfort setting, thinking the fan should run each hour for that time. No luck. The unit shows Equipment running now Fan, but it never runs. Builder is avoiding question, wonder if something is wrong. ...The ability to set a specified fan speed if your ecobee is configured for multi-speed fan support (for more information on multi-speed fan installations, please see this article) Fan Holds can be set for the following durations: 15 minutes, 30 minutes, 45 minutes, 1 hour, 2 hours, or Indefinitely (keeps the ecobee in ON fan mode until the Hold ...Ecobee is a prominent brand in the smart home technology sector, specializing in smart thermostats and other innovative devices aimed at enhancing energy efficiency and home comfort. Renowned for their user-friendly interfaces and advanced features like remote access and room sensors, Ecobee thermostats enable homeowners to manage their heating and cooling systems efficiently, saving both ...Reset All will return your ecobee thermostat to factory settings. This will require you to set up and register your ecobee once again. Do note that heating and cooling (HVAC) system settings will be lost, and a technician may be needed to reconfigure those settings. If you are having issues with heating, cooling or internet connectivity a Reset ...However, when the outside air quality is poor, I turn it off and set the Ecobee to 10min/hour to just move the air around in the house. 5min in auto mode when set to cool. Set to on all the time in heat mode. Distributes the heat much better for me in heat mode.That way you are telling Ecobee that there is a wire in W1 when in fact there is none. Then switch Stage 2 delta temperature to 1F. Read also: How to set ecobee thermostat. Furnace fails to ignite. Your Ecobee wont turn on heat if your furnace fails to ignite. Go down to the furnace and check through the little glass if there is light linking. Ecobee fan setting, Tap the Fan Hold button. Select a value by moving the slider left and right. Press the Back button in the top left. Exit the Quick Changes menu. You’ll now see a Hold saying “Fan on until <time>” or “Fan on and holding” if the hold is Indefinite. All the “Auto” toggle actually did in the past was set a Hold with “auto” fan ..., That way you are telling Ecobee that there is a wire in W1 when in fact there is none. Then switch Stage 2 delta temperature to 1F. Read also: How to set ecobee thermostat. Furnace fails to ignite. Your Ecobee wont turn on heat if your furnace fails to ignite. Go down to the furnace and check through the little glass if there is light linking., Ecobee Smart Thermostat Enhanced: https://amzn.to/3CAbT9ZFavorite Smart Home Devices: https://www.amazon.com/shop/onehoursmarthomeEcobee Room Sensors: https:..., Jul 10, 2018 ... Comments6 · How Set a Schedule on The Ecobee4 (10 of 13) · How to Use The Ecobee4 Pro Smart Thermostat · How To Use Ecobee Thermostat Premium ..., I just upgraded my Ecobee 3 thermostat to the latest Ecobee 5 and noticed this peculiar thing happening. Basically, with my current temperature setting on a Hold temperature (different from my regularly scheduled set point temperature) and I manually turn on the circulation fan, the thermostat overrides that Hold temperature and runs the thermostat based on the scheduled temperature instead., Your Ecobee thermostat fan keeps running because of an issue in the settings. There are a few possibilities: the fan is in ‘On’ mode instead of ‘Auto’ mode, the smart recovery setting is on, or the heat dissipation time is over thirty seconds. These three setting errors are usually the cause of a continually running fan., Main Menu > System >. Fan = 0 min/hr. Main Menu > Settings > Installation Settings > Thresholds: Cool Dissipation Time = 0 seconds. AC Overcool Max = 1F. Compressor Minimum On Time = 10 min. Cool Differential Temperature: 1F. The values in bold should be your first move, set them and see how it goes. If they don't help enough, the remaining 3 ..., Short Answer. To turn on the fan only on an ecobee thermostat, you can use the Smart Home/Away feature. First, go to the main menu on the ecobee thermostat and select …, Ecobee Fan Settings - Ecobee furnace or Air Conditioning fan won't turn off - YouTube. Kodiak PM. 65 subscribers. Subscribed. 126. 52K views 2 years ago. How to make sure your Ecobee..., Fan run time on Ecobee is a setting that allows you to specify how long the fan should run each hour, aiding in temperature regulation and air circulation. It’s adjustable from 0 to 55 minutes per hour and can be set according to your preference, with the fan running independently of heating or cooling cycles. This feature is especially ..., Go to the Main Menu > General > Settings > Installation Settings > Thresholds > Auto Heat/Cool, then select Enable. Once it is enabled, you can activate Auto mode by navigating back to the Home screen and selecting the System mode icon above the temperature. You can also activate Auto mode by performing the same action from the Thermostat Home ..., The “on” setting basically just turns your fan on and will run it constantly, or at least until you flip the Ecobee setting switch to the “auto” or “off” position. All you have to do to fix this problem is jump into your QUICK SETTINGS menu, jump down to the FAN option, and then configure either automatic or “on” settings to ..., Dec 18, 2019 ... One great thing about having a smart thermostat being able to control it when you are not at home. Case in point an ecobee thermostat., The low-speed fan wire (usually known as G, Gl, or G1) must go to G on the ecobee; The medium-speed fan wire (usually known as G2 or Gm) must go to Y2 on the …, Your Ecobee thermostat fan keeps running because of an issue in the settings. There are a few possibilities: the fan is in ‘On’ mode instead of ‘Auto’ mode, the smart recovery setting is on, or the heat dissipation time is over thirty seconds. These three setting errors are usually the cause of a continually running fan., Check your ecobee thermostat: Ensure the thermostat is calling for heat by checking the flame icon on the ecobee. If the outline of the flame icon is white, it's not calling for heat. By default, ecobee engages heating when the temperature drops 0.5°F (0.3°C) below the heat setpoint. Investigate Threshold settings On the thermostat , Your Ecobee thermostat fan keeps running because of an issue in the settings. There are a few possibilities: the fan is in ‘On’ mode instead of ‘Auto’ mode, the smart recovery setting is on, or the heat dissipation time is over thirty seconds. These three setting errors are usually the cause of a continually running fan., Compressor Min Outdoor Temp: 25F (or disabled which was recommended by ecobee) AC Overcool Max: Disabled. Heat Diff Temp: 1.5F. Heat Dissipation Time: 30sec. Aux Min On Time: 5min (default) Cool Diff Temp: 1.5F. Cool Dissipation Time: Auto. Compressor Min On Time: 5min (default) Compressor to Aux Temp Delta: 3F., Open main menu. Tap Settings. Open installation settings. Tap equipment. Tap furnace. Go to fan control in heat mode. Set to Ecobee thermostat. Note: You must access this setting through the Ecobee thermostats as the app or the web access won’t give you that. Minimum Fan Runtime., Short Answer. To program your ecobee 3 lite, first install the ecobee app and create an account. Once your account is set up, connect the ecobee 3 lite to your home’s Wi-Fi network. Open the app and follow the instructions to connect the thermostat to your home. Once the thermostat is connected, you can program it to your desired settings., You should be able to go into the ecobee app and make a HomeKit scene that sets the mode to “off” but the fan to “on”. Has to be done in the ecobee app because home app doesn’t have access to the fan but once the scene is created Siri can set it This should be possible but unfortunately I can’t get my scenes to work the fan reliably because of an ecobee software issue. , By default, you have three settings: Home, Away, and Sleep. Each setting is designed for different times and activities. For example, when you're at home, your ecobee thermostat can turn on the heat if it gets colder than 70°F (21°C) or activate the cooling if it gets warmer than 78°F (25°C)., On the ecobee App. Tap Home > Tap on the Thermostat > Tap the Menu > Tap on eco+ then drag the slider to your desired saving level. If an eco+ feature is running at an inconvenient time, you may temporarily disable eco+. On the thermostat home screen. Tap the Arrow icon next to “ eco+ is on ” and select End eco+ for today., pointthinker. • 6 yr. ago. The default time for fan runtime is usually good for most homes. It just keeps the fan running after the burners are off to blow residual heat out of the metal ducts into your home. When you have your furnace serviced, ask the person doing it if there would be any reason to extend the fan time at the end of a ... , The fan on the Dell GX620 computer is designed to pull the heat away from the central processing unit (CPU) to keep the processor cooled down so it can work properly. If the fan we..., Next, press the power button on your thermostat to switch it off. Unmount your thermostat from the wall. This will reveal the wiring at the back of the device. Locate the C-wire and unplug it from the backplate. In most cases, the C wire has a red color. Wait 5 minutes. Now, re-plug the C wire to the backplate., Ecobee SMART THERMOSTAT User Manual View and Read online. Using the touch screen. Personalizing your Smart Thermostat. Programming your Smart Thermostat. Est. reading time 35 minutes. ... In auto system mode the fan setting will revert to whatever is configured in the Details - fan setting. Auto-change over mode and the minimum …, Main Menu > System >. Fan = 0 min/hr. Main Menu > Settings > Installation Settings > Thresholds: Cool Dissipation Time = 0 seconds. AC Overcool Max = 1F. Compressor Minimum On Time = 10 min. Cool Differential Temperature: 1F. The values in bold should be your first move, set them and see how it goes. If they don't help enough, the remaining 3 ..., Here you will see the temperature that your Smart Thermostat is heating or cooling to. You’ll also see other things that your Smart Thermostat is doing, like running the fan, setting temperature holds, and more. Pressing the information bubble brings up the Temperature selector, where you can manually adjust the temperature., By kicking the fan on periodically (mine is set for I think 20 min/hr; the ecobee divides this into 4 segments so my fan will run 5 minutes out of every 15), the fan will 'mix' the air in the house, which has the effect of pulling some of the cooler air from the basement and the east side rooms and pushing into the rooms warmed by the sun., Go to the Main Menu > General > Settings > Installation Settings > Thresholds > Auto Heat/Cool, then select Enable. Once it is enabled, you can activate Auto mode by navigating back to the Home screen and selecting the System mode icon above the temperature. You can also activate Auto mode by performing the same action from the Thermostat Home ... , If your thermostat is all ready installed, you will need to make some wiring changes and reconfigure your thermostats equipment settings. Installing your thermostat. When wiring an ecobee thermostat for a multi-speed fan system, specific wiring terminals on the ecobee will be used to accommodate for the lack of dedicated G2/G3/S1/S2 terminals. , pointthinker. • 6 yr. ago. The default time for fan runtime is usually good for most homes. It just keeps the fan running after the burners are off to blow residual heat out of the metal ducts into your home. When you have your furnace serviced, ask the person doing it if there would be any reason to extend the fan time at the end of a ...