How To Set An Old Honeywell Thermostat - How do I enable auto change over on the RTH6360?.

Turn on the Thermostat: Press the power or on/off button to turn on the thermostat. The engine thermostat regulates the amount and speed of engine coolant that passes from the radiator into the engine passages. orangetane strain If the inside of your thermostat is filthy or there. Step 1: Connect your thermostat to your home WiFi network. Many houses are equipped with heat pumps, which transfers heat from one place to another. For heating, the left (blue) lever sets the lower temperature for when the …. Follow the manufacturer's instructions to set up your preferences. 5 Press NEXT to set weekend time periods (Sat-Sun), then press DONE to save & exit. If your old thermostat had 2 C or C1 wires, wrap each separately with electrical. Luckily, you can typically find the EM Heat Switch on the display as one of three modes: Heat, Cool, and EM. Honeywell analog thermostats have a temperature range of 50 to 90 degrees. Honeywell RTH2300B Thermostat: https://amzn. Honeywell 6000 Series: If your thermostat falls under the Honeywell 6000 Series category, make sure the thermostat is turned on. This one shows how to adjust the anticipator of the mechanical thermostat for longer cycles. You’ll be able to set your temperatures preferences in advance via a 5-2 Day, 5-1-1 Day and 7-Day schedule. They allow you to set and adjust the temperature according to your comfort level. Choose “Thermostat Configuration. You can reactivate the feature on your thermostat at any time that you choose. When you touch the Switch to Permanent Hold button, the thermostat screen …. On some touchscreen models, you'll get the message "Hold Until" when you press the up/down buttons. Usually the power wire is red and the heating wire is white; …. Precise temperature control for both heat and cooling systems. Carefully follow the steps to remove and dispose of old batteries in an environmentally friendly manner. Press the DATE/DAY button to begin setting the date. In addition to the OB/ wire and R wires, you will have an Aux/E wire. To change your target temperature, all you need to do is turn the existing upper dial until the marker aligns with your desired temperature. Unscrew and remove the old thermostat's mounting plate from the wall, but do not disconnect the wires. Many Honeywell thermostats come with default schedules. A honeywell temperature limiter is a common way most hotels use to limit how low an air conditioner can cool and how high a heater can heat. Finally, choose the "reset" option on your thermostat screen. Locate the batteries by removing the battery compartment tray or cover or by removing the unit's faceplate. My previous programmable thermostat would kick in when the temp dropped one or two degrees …. First, head over to your electrical breaker box and turn off the power source to your thermostat. Touch the TIME displayed and use the +/ - icons to adjust the start time for the desired period (adjustable in 15-minute increments). Replace both AA batteries with new ones. Choose "Thermostat Configuration. Connect these wires to the appropriate terminals. Printable and downloadable, Honeywell TH6220D1028 Thermostat user guide pdf. After that, follow the options available or select the “WiFi Setup” option. This will allow you to enter the key code to turn off your lock. In this video you will learn how to remove your existing thermostat and install a Honeywell Wi-Fi Thermostat Model RTH6580WF. Part of the Honeywell Home T Series of thermostats from Resideo, the T4 Pro Programmable Thermostat helps you manage your home heating and cooling in a simple, easy to use device. Press "Done" to save your changes and exit the Clock screen. until the display changes (approximately 5 seconds). Verify these wires are firmly connected to the correct terminals. Setting up the “Wake Time” is also simple with the “Time” buttons. Take a Photo: Before disconnecting any wires, take a clear photo of the wiring configuration. In “Auto” mode (the most commonly used setting), the fan runs only when the heating or cooling system is on. hunter ed exam answers This video shows you step-by-step instructions on how to program a Honeywell 2300B thermostat. Press up or down to set the temperature for this time period, then press NEXT. Go to the Honeywell thermostat app. Verify the thermostat’s wiring is correctly connected. View and adjust the humidity levels in your home. Contractor's Assistant: Do you know the model of your Honeywell thermostat? How old is it? On the bottom of it, it has the numbers###-##-#### It’s at least 6 years old. Program it so your waking temperature begins 20 minutes before you get out of bed, so you wake up to a comfortable. How To Replace Old Honeywell Mercury Thermostat With Google Nest Thermostat E. Keep the area below and in front of the thermostat clear of furniture. To reset a Honeywell thermostat password or security code, press the 'Menu' button on the thermostat and go to 'Security Settings. Introduction to the Honeywell Home RTH2300 Thermostat. How Do I Set My Honeywell Thermostat To AUTO?-----James Webb (2022, August 7. Unsnap the cover from the old thermostat or, if there are screws, remove them using a screwdriver. A 1-pole thermostat omits the on/off switch. Setting the temperature on your Honeywell Home thermostat is a simple process that allows you to adjust the heating or cooling settings to your desired comfort. Fasten the wires to the wall and ceiling with cable staples. Press s or t to set the temperature for this time period, then press SET. Follow the on-screen instructions to set up your thermostat in pairing mode. ly/3mmHFwT for more information on the Resideo Honeywell Home 5-2 Day Programmable Thermostat with Change Reminder. Remove the cover from the old thermostat and take a picture of the wires with your phone (you’ll see why in a sec). Registering wrong temperatures. Turn off your thermostat, open the battery compartment on the front, and remove the batteries. Remove the thermostat from the wall by unscrewing the mounting plate. Connect it to the G terminal and set jumper JP1 on the back of the thermostat to the HE position if the furnace is electric. disney collectors dolls This helps you save money and improve the comfort of your home. Press s or t to set your Wake time (Mo-Su), then press SET. If your place has a Honeywell RTH6350 thermostat, I'll show how to change the time on this in about 2 minutes. This step involves mounting the new unit to the wall and ensuring that it is securely in place. Page 4 CT87A,B,J ROUND® THERMOSTAT 1. Now, these wires should be connected properly to the ends. Remove the old batteries, noting where the positive and negative ends are placed. For most thermostats, the Date Code is a four-digit code located on the back of the detachable face plate. 120-240V headboard compatibility. Precise temperature control for heat only systems. From the home screen, tap on “Settings. valve for cool (“O” factory setting) or heat (“B”). For more information or to purchase this product, visit www. Check the circuit breaker, fuse box, or any other source of power. A typical Honeywell thermostat displaying its -Hold Options- screen, with the -Switch to Permanent Hold- button highlighted. Set to the time you go to bed and the temperature you want overnight (usually an energy-saving level). Inspect the old thermostat wiring. More About How To Reset A Honeywell Thermostat • Do I need to reset my Honeywell thermostat after changing batteries?. A heat anticipator is a tiny electrical device inside a thermostat that makes the thermostat shut off the furnace burners just before the set temperature is reached. This model is the wireless digital CM927 but the same principles apply for quite a few Honeywell Remote Home Thermostats. To turn off or on a Honeywell Home thermostat, you can follow these general steps:Locate the Power Button: Most Honeywell Home thermostats have a power butto. Open the Lyric app and select the menu button in the top left corner. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. Since the Lyric is already installed, press “Skip Install" to proceed to. Choose your desired mode and tap “Done. Step 3: Connect the thermostat to Wi-Fi network. Carefully lift the cover from the bottom edge and tilt it upwards, away from the wall. Grasp the thermostat with the fingers of your hand on the top and your thumb on the bottom and …. Set the FAN switch to Auto or On. Press NEXT to set weekend time periods (Sat-Sun), then press DONE to save & exit. Integrating a 100% silent operation, the Honeywell Home 5-2 Day Programmable Electric Heat Thermostat can be comfortably fitted anywhere in the house. Touch the Temperature tab, then set the heating or cooling temperature you want. Look for the power button on the thermostat and press and hold it for about 5-10 seconds until the display turns off. iready reading placement tables Once the auto mode is activated, the thermostat will seamlessly transition between heating and cooling based on the temperature differentials detected in the environment. Also ensure that the heat - off - cool switch is set to the desired run mode. Page 1 The screen will wake up by pressing any of the five menu options buttons. Set to the time you leave home and the temperature you want while you are away (usually an energy-saving level). Straightforward display and basic buttons keep operation simple. The New Honeywell TH 8000 Thermostat is explained in our instructional how to video by Service Champions. Make sure the battery polarity matches the markings on the battery compartment. Here is a video of one of our Engineers explaining how to program a Honeywell ST9400 Thermostat. ly/3mD8GLwThis video will show you how to use and Program Schedules for the RTH7600D 7-Da. This comprehensive guide will help you understand. Free shipping on many items VINTAGE 1978 ROBERTSHAW AUTOMATIC SET-BACK THERMOSTAT T30-1042. To set the Honeywell thermostat manual models, you have to search for a dial on the thermostat’s body display screen. honeywell thermostat t8112d1005 1 manual. This video tutorial will show you 2 ways of manually overriding your Honeywell RTH2510/RTH2410 digital thermostats temperature set point. Time-Based Scheduling: Program your thermostat for one week; each day (each day is a different schedule); Mon-Fri, Sat, Sun; or Mon-Fri, Sat-Sun. "All Honeywell thermostats have a +-1°F or +-. Heat Anticipator Adjustment Direction & Settings - Honeywell CT87A,B,J Round® Thermostat. How to wire your new Honeywell thermostat. Set the temperature setpoint indicator at the indicated temperature. To change the temperature display on a T1Pro Honeywell thermostat, press and hold the button (MENU) until the "advanced" menu appears. Hold the cover plate and gently pull it to detach from the base plate. Now, click on the “Temperature” Tab. This video shows how to change the batteries in a Honeywell thermostat and which batteries they take. Remove your thermostat faceplate. For this, you will have to press the "Set Schedule" button. 6:00 am 70 ° LEAVE 8:00 am 62. Honeywell thermostat settings offer 4 different settings 5 days a week: Leave, Sleep, Return, and Wake. Make sure your smartphone or tablet is connected to a 2. For example, an air conditioner is a heat pump that takes the heat from the air inside your house and releases that heat into the outside air. A first stage heat pump system will have 1 compressor hence only 1 Y wire. Replace all wires back into the wall, if extra length is exposed. Replace the battery cover by sliding it firmly back into the front of the thermostat. In this situation, short cycling occurs when the low-pressure switch shuts off the system when it …. Press SET until Set Schedule is displayed. This thermostat works with common 24 volt systems such as forced air, hydronic, heat pump, oil, gas, and electric. Step 2: Select the Desired Setting. Tap on the "Menu" button on the thermostat home screen. Choose “Reset Factory Settings”. Briefly unplug the wireless router. Replacing a trane thermostat with honeywell doityourself com community forums old chronotherm to wi fi …. The WiFi 7-Day Programmable Thermostat has a large easy-to-read display and can be adjusted through your smartphone or tablet for convenience. A Honeywell Thermostat offers advanced climate control, but occasional glitches can occur. In a second or two, the display should change. Once you set both the max and and min temps, tap the Done button. Press the bottom right button once to turn on the backlight of the thermostat. Controlling heat and ac at the same time. The T9/T10, T5/T6, RTH9580WF, the RTH9585WF, and the TH9320WF (WiFi Color Touchscreen) all have a screen lock feature. This is a quick tutorial on how to install a new thermostat, and a little about how thermostats work, using the two examples, White Rogers and Honeywell as o. Go to your thermostat and switch from Heating to Cooling and then feel the temperature of the air blowing from the vent. How do I enable auto change over on the RTH6360? Press and hold Menu and + buttons for approximately 5 seconds to enter advanced menu. Turn the Honeywell aux heat on. This thermostat cannot be used on heat pumps with backup heat or on multistage systems. Usually the power wire is red and the heating wire is white; making a connection between those two screws should turn on your furnace. After that, return to the Menu and pick “Installer Options”. Next, remove the thermostat cover. Comments33 ; THE Simplest Battery FREE Round Manual Thermostat | Honeywell Home CT87K1004. Just the heat running over isn't enough proof but your inability to program it is more evidence. Step2- Register your thermostat. Then follow the directions in the Lyric app to begin managing your Lyric thermostat. To raise the temperature, turn it clockwise. Locate the four-digit date code on the back. Use the new thermostat’s backplate and a pencil to mark the wall. Verify that the wires were matched correctly and are securely connected at the thermostat. Press and Hold the Far-Right button in the bottom row. Off: Heating and cooling systems are off. Once the old thermostat is removed, it’s time to install the new one. You can usually just take the thermostat straight away from the wall on most models. A honeywell T87 thermostat is just what we need. 6) Malfunctioning Reverse Valve. washing machine lowes sale If we recommend placing a wire in a terminal, do not move it to another terminal if we address it later in the guide. When Finish Setup is displayed, Touch SELECT to save the settings. Next, hold the "menu" button for a few seconds. Aaron from Service Champions Heating & Air Conditio. Tap the Temperature tab and choose the heating or cooling temperature you want. In this video, we show you How to Install Smart WiFi Thermostats like the Honeywell RTH9585WF, including wiring, setup, and usage. From here, your device should be unregistered. Touch SELECT to edit each period. Activate the Z-Wave Smart Hub / Gateway. Setting the temperature on your Honeywell Home thermostat is a simple process that allows you to adjust the heating or cooling settings to your desired comfo. Ensure that the furnace door is closed. Your new thermostat will automatically control the temperature in your home, keeping you. Go to the settings menu and select “thermostat”. Honeywell Home Thermostats (RTH6580WF, RTH9585WF, RTH6500WF, etc): 1. best thralls conan Word Replace Your Old Thermostat. Take out the old batteries and dispose of them properly. Check the thermostat display for cooling, usually indicated by the words "cool on" or a snowflake icon. Disconnect the router's faceplate. A clogged air filter restricts the airflow into and out of the system, causing a malfunction. The B wire on your old trane thermostat is commonly used as the C-wire, which stands for …. Make sure the phone's connected to a. So, do need one in your home? Advertisement Air has water vapor — or humidity — we are sensitiv. An hour ago I realized the update set my date and time back to the factory default settings when the thermostat comes new from the factory - some date in 2013, at some incorrect time. As of 2015, Honeywell manufactures more than 60 thermostat models ranging from seven-day digital programmable thermostats to manual thermostats, and all models can be viewed on the. W2: If you upgrade to two-stage heating, you need this terminal to control the second stage. If your Honeywell Home smart thermostat has a blank screen or isn't kicking on your furnace or air conditioner, the breaker may have tripped. This wire goes to the G terminal on your new thermostat. To reset the schedule: Press the System button. How to set the time on your thermostat. Now, turn back on the furnace, set it to heat and then, set it to the desired temperature. You need to make sure that the wires are connected properly and there are no loose ends to the wire connection. Follow steps with analog thermostat by turning the heat up or AC down and waiting a few minutes to see if it kicks on. Pull the wires through the large hole in the base of the new thermostat and align the mounting holes with the wall anchors. In the middle of the screen, you’ll find the up and down keys. usps exam 473 practice test Press or touch the MENU option on the thermostat and choose the Schedule option. 7e Push any excess wire back into the wall opening after all wires are installed. You may do this by pressing on one of the following choices, depending on the model you own: Cancel, Cancel Hold, Remove Hold, Run, Run Schedule, or Use Schedule. Set time and temperature for the next period (Leave). 00 (29% Off) - 8 Customer Reviews. Then, press the up or down arrows on your thermostat to set the desired temperature. How to reset your Honeywell Thermostat vintage 1997 SoCal market area. These Honeywell thermostat models are designed with a TRIAC switching to deliver extraordinary …. This device is designed to help you control the temperature o. Recommended Heat Anticipator Setting for the CT87 Thermostat Steam Heat. No scheduling: Control your comfort …. The filter can improve the system’s performance or cause extensive damage when clogged with a significant amount of dirt. Begin by mounting the base plate to the wall and feeding the wires through the opening in the plate. Leave the wall plate where it is so you can label. Instructions of Model RTH2510 / RTH2410. Remove the thermostat cover and use a soft-bristled brush or can of compressed air to clean any dust or debris inside. honeywell thermostat t8112d1005 troubleshooting. Press the "Up" and "Down" buttons to manipulate the time displayed on the screen. For this, you will have to press the “Set Schedule” button. The Honeywell ST9400C manual is an essential resource for anyone who owns or operates a Honeywell ST9400C programmable thermostat. browards sheriff office Then, select the “Add Schedule” tab, choose “Temperature,” and set your desired temperature for each day and time slot. If you haven't set one up, the default is 1234. If you do not see your wiring listed, we recommend using our on-line compatibility checker. " On your phone, search for the list of devices with the name "NewThermostat_123456" or similar. If you have an old Android phone sitting around collecting dust, and you've been pining for smart thermostat but don't want to drop the cash on one, then the Android Thermostat mig. Put your unit back on the wall mount, close the face plate, or re-insert the battery compartment. Mercury is typically found in older mechanical thermostats like the Honeywell Round T87 and rectangular T8090. Here's how: Adjusting the Temperature: Locate the +/- buttons or the up/down arrows on your thermostat. Venmo Tip Jar @AndrewDIYThis is a pretty standard process for thermostats even if they aren't the Honeywell brand. For most thermostats, the CRC and MAC ID are located on the back of the detachable face plate. Step 2: Remove the battery compartment. Now your thermostat has been reset. Step 5: Connect wires to corresponding terminals on the new. Adjust using the plus or minus icon. If all of the above factors check out and the thermostat still is not functioning, look for a flashing icon on the display. You may always check it up in the user. Afterward, head back to the home screen and adjust the temperature by using the up and down arrows. If you have a manual thermostat, there is a small chance that you will have this option. If none of these work, it may be time to call an HVAC repair company. I will also show you how setup and program the new one. Either refer to your Honeywell control manual to reset it or follow the guide below that outl. Jun 27, 2023 · Close the battery compartment. May 12, 2023 · For most thermostats, the CRC and MAC ID are located on the back of the detachable face plate. Slide the battery compartment back into place, bottom first. Do not use B wire if you already have O wire. Press the center button and hold to unlock the keypad. To turn off the AC completely, press 'OFF'. Whether it’s a basic analog thermostat found in an older house or a state-of-the-art smart home interface that manages heatin. Enter the Date Code when prompted to "Enter your password". Touch Fan Choose on, auto, or circulate. The first thing you can do if your thermostat display is on, but doesn’t power on the HVAC system, is to adjust the temperature. Testing the Reset and Troubleshooting. You will also learn how to conn. The wiring wasn't complicated or confusing on this install, but I can see that other, modern systems. To reset a Honeywell thermostat password or security code, press the ‘Menu’ button on the thermostat and go to ‘Security Settings. Then, use the left and right arrows to find the “Wi-Fi” settings. Then press the mode button to switch the mode back to Auto Changeover. (You can also adjust the temperature setpoint first and then change the mode if required) The display will then indicate “Heat to” or “Cool to” with the target temperature. The Honeywell Chronotherm III T8631A is a thermostat designed for residential heating and cooling systems. The advice, and photo, you got from Nest support is wrong. Press up or down to set the temperature for this time period, then press SET. Press the +/- or up/down button (for some thermostat models, you will need to press the Hold button or the Permanent Hold display) Next, press the Cancel button to disable the permanent hold (again, for some thermostat models, the options here might vary. Connect each wire to the corresponding terminal on the new thermostat, referring to …. Use the NEXT button to scroll to option 125, then use the EDIT button to scroll between "Fahrenheit" and "Celsius. With most manual models, the top arc exists for you to define your desired temperature. Press and hold the reset button for 10 seconds. 1 Align the 3 tabs on the cover with slots on the thermostat, then push gently until the cover snaps into place. You will know that EM Heat has been activated because a red light will indicate it. 1) Thermostat Not Set to Cool Mode. tropical touch waterford Tap on the “Menu” button on the thermostat home screen. Please follow the steps in the links bellow. Mercury thermostats work by using bimetallic strips of two dissimilar metals, affected by the coefficient of thermal expansion. 3 Hot water or high-efficiency furnace: Use this setting if you have a hot water system or a gas furnace of greater than 90% efficiency. One-touch access to setpoint temperature. Then, use the arrows to set the current time. 5°c and are not adjustable" said tech support. The T5 Smart Thermostat allows you to take comfort knowing your home temperature will always be just how you like it. If the hole placement on the new thermostat lines up with the holes from the last one you can skip the last two steps and just screw it into the same holes. Next, return to your thermostat menu and press Menu, Devices, and then Sensors. How to Install A Honeywell Home T3, T4, T5, T6, and T9 Thermostat (Video) Modal 1. Maintain Your Ideal Temperature This Honeywell Home T5 Touchscreen 7-Day Programmable Thermostat features a crisp, clear touchscreen for intuitive setup and use. Tap the Switch to Permanent Hold Button. Go to the thermostat configuration and enter the correct system type and change the reversing valve setting. Tap “Delete Thermostat” at the bottom of the screen. After performing any of the tasks, remember to hit the “Dismiss” button. Step 2: Access the Settings Menu. Turn the thermostat back on and check for proper functioning. Once you press this button, you will see the “Wake Mon-Fri” option on the screen. If the old thermostat had both O and B wires, attach the B wire to the C terminal. This video will cover how to se. Be sure to place the batteries in the correct orientation. In this video I show how to set up the minimum and maximum temperate on a Honeywell FocusPro 5000/6000 thermostat with a bonus tip added on how to change fro. With the "wake" time set, you will now have to set the "wake" temperature. T5 Smart Thermostat without C-wire Adapter. heating-cooling, use the 137421A Heating-Cooling Wall-. It’s typically labeled as a “Temperature Unit” or something similar. Get support for your WIFI 7-DAY PROGRAMMABLE THERMOSTAT, from installation and manuals to troubleshooting tips and replacement information. Select “Heat” or “Cool” from the switch at the top of the Honeywell LR95329 thermostat. The two main parts are a bi-metal coil spring and a glass bulb containing a bubble of liquid mercury. Backlit display is easy to read. Follow these instructions to connect your thermostat to Wi-Fi: Access the menu: On your thermostat, locate and access the main menu. 1 day ago · How to Set Old Honeywell Thermostat Temperature | Quick Guide • Honeywell Thermostat Guide • Learn how to easily set the temperature on an old Honeywell ther. Welcome to our channel! In this video, we'll be showing you how to reset your Honeywell thermostat for your air conditioning system. WiFi setup will then be displayed on the screen. Monitor or adjust your heating and cooling temperatures via computer, smartphone, or tablet. If your fan is running constantly or won’t turn off when dealing with your thermostat, one of the first things you should do is check the white button on the side of the unit. On the other hand, to lower it, you have to. This is how it should be used on a day to day basis. spectrum kids watch Programmable Electronic Thermostat. Press and hold the blank box in the center. Then, mount the thermostat onto the base plate or the wall plate - and it'll pop into place. Hold the middle buttons to access a new screen. Find it used on eBay: https://ebay. In this HVAC Training Video, I Show Honeywell Thermostat Wire Terminals, Functions, Color Code , and Overall Instructions for Use! Supervision is needed by a. leader herald obituaries ny Install Honeywell T5+ WiFi Smart Thermostat. If the old thermostat had both V and VR wires, contact a heating/ cooling contractor for help. NOTE: See "System Setup Options" on page 9 of the quick install …. All currently manufactured Honeywell Home digital thermostats have the option to set an upper and lower temperature setpoint limit. To Remove the Schedule completely. 660) This code appears when it’s time to get a new filter or wash the old one. Nov 14, 2022 · Press the plus or minus icon to set the time in 15-minute increments. Note that there's no adjustment for changing th. The tutorial will walk you through the steps for programming your Honeywell Pro-2000 Series thermostat. Check out this Honeywell Home support article for information on setting up your T5, T5+ or T6. One morning, you may find the temperature to be chilly even though your Honeywell thermostat is saying something different. Connecting a Honeywell CT87N Thermostat. Using your fingers or a small flat-head screwdriver, carefully insert it between the cover and the base of the thermostat. The RTH230B programmable thermostat can be used to control: • a gas, fuel oil or electric furnace - 2 or 3 wires. Wiring A Honeywell Room Thermostat Or Resideo Connection Tables Hook Up Procedures. Trane Furnace XV95 TUH2B060A9V3VA (37,700/58,000) Trane Heat Pump XR15 4TWR5030E100AC. Slide the switch to the desired setting and either manually adjust the arrows to the desired set point and press hold or establish a schedule for heating and cooling. The tape will catch the drywall or plaster dust when you drill the holes for the new thermostat base. Note: If you have a digital thermostat that has a blank display, skip this step. It determines whether the heat pump operates in heating or cooling mode. Fine Tune makes certain that when you set your home for 70 degrees, it feels like 70 degrees. How to program schedules on the T6 Pro thermostat. Scroll down to “WiFi” and select it. First, let's identify your device. Press the “Day” button to set the Day to the correct Day of the week. How to Program a Honeywell Thermostat. Select Users and touch Invite New User located at the bottom of the screen. If the room temperature is either too hot or too cold for long periods, move the lever closer to the “longer” setting by one calibration mark. Scroll down and select "Sensitivity". Remove the cover of your old thermostat (Fig. Remove the battery compartment cover or the entire faceplate, depending on the model. + The Round Non-Programmable Thermostat makes setting your ideal temperature quick and easy.