Honeywell thermostat how to unlock screen - T6 PRO PROGRAMMABLE THERMOSTAT Manual & Support. TH6320U2008/U, TH6220U2000/U, TH6210U2001/U. Download Manual Download Installation Guide. Download Service Datasheet. T6 PRO PROGRAMMABLE THERMOSTAT Product Page.

 
Nov 28, 2018 · In this video, Richard shows you how to lock and unlock Honeywell T4 Series Thermostats (inc. T4M and T4R thermostats).Honeywell Home T4R are available to bu... . Harrelson collision center

Press and hold the button on either side of the center button on the screen at the bottom of the display for ~5 seconds until the screen changes. You'll see a setup number to the left then up and down arrows next to it. Scroll through until you get to 0670 (keypad lock/unlock).Available under the Fan setting, the Circulate feature turns on the fan for 30% of the time every hour in order to circulate the air in your home. Hold: When using a schedule or geofencing, the thermostat enables the Hold feature. 2 types of Holds are available, Temporary and Permanent. (When Geofencing is enabled, Permanent Hold is …Amazon store:🇺🇸https://www.amazon.com/shop/fixmyhome👉Shop great tools and products in my 👈🔥 https://www.fixmyhomestore.com/ 🔥 👉Shop great tools ...My parents locked their thermostat and I can't unlock the screen. It's a Honeywell TH811OR1108 The screen is locked HVAC Technician: HishamA1119 , replied 3 years ago1.59K subscribers. Subscribed. 351. 49K views 5 years ago MID WALES PLUMBING & HEATING SUPPLIES LIMITED. In this video, Richard shows you how to lock and unlock Honeywell T4 Series...It has been designed to give you many years of reliable service and touch- screen climate control. Features • 7-day program schedules maximize comfort and economy. •... Page 5: Programming At A Glance VisionPRO TH8000 Series ® About your new thermostat This thermostat is ready to go! Your new thermostat is pre-programmed and ready to go.1.59K subscribers. Subscribed. 351. 49K views 5 years ago MID WALES PLUMBING & HEATING SUPPLIES LIMITED. In this video, Richard shows you how to lock and unlock Honeywell T4 Series...#DIYTechHome #EasystaffDIYHelloLet`s learn things.How to exit fail safe mode on the iT500 and iT500 receiverHow a Wireless Smart Thermostat Works - Salus iT...If you use a touchscreen model, press the "Menu" button to access the settings. On settings, scroll through the menu to find the "Reset" or "Factory Reset" option. Once you find it, select it. Now, your thermostat should prompt you to input your password to confirm the reset. Input your correct password now.Press the center button and hold to unlock the keypad. This will allow you to enter the key code to turn off your lock. Enter your keypad code. With most Honeywell models, the default keypad code is "1234.". You can punch this in by scrolling through the available numbers using the +/- buttons.3.4K. 204K views 2 years ago. In this video I show you how to unlock the Honeywell Pro Series Thermostat. I show you step by step how to unlock the thermostat and enter the password....Product Width. 2.88 in. Product Depth. 1.13 in, 29 mm. Warranty. 1 Year. This Honeywell Home Multi-System 7-Day Touchscreen Thermostat is easy to use with a vacation hold that adjusts to normal settings after you return.T5 SMART THERMOSTAT Manual & Support. RCHT8612WF2015/U, SMHOM8610KIT, RCHT8612WF2015/W, RTH8800WF2022/U, RCHT8610WF2006/U. Download Manual Download Installation Guide. Download Service Datasheet. T5 SMART THERMOSTAT Product Page.It shows on the screen to unlock. I don't know how to unlock the thermostat to reset all the information required. Contractor's Assistant: I understand that you're having trouble unlocking your Honeywell Pro thermostat to reset the time. Have you tried any troubleshooting steps so far? I don't know how to troubleshoot current situation with ...Sep 26, 2023 · Whether you’ve accidentally locked your thermostat or want to change the lock code, this guide will provide step-by-step instructions for unlocking different models of Honeywell thermostats. Unlocking a Honeywell thermostat is a simple process that can be done by following specific instructions for your model. There are different lock modes ... From the locked home screen, press the center button. Users will need to enter the passcode. The default passcode when the Honeywell T4 Pro is partially or...Is your thermostat repeatedly resetting, even when you haven’t touched it or adjusted the settings? In this case, the thermostat may be on hold. Expert Advice On Improving Your Hom...The Honeywell Home ProSeries T6 tends to lock up sometimes, or clients can accidentally lock it not knowing. This video will guide you ever step of the way h...If your Honeywell is locked, the following steps will walk you through how to unlock it. Step 1: When the thermostat asks for a pin, enter 1234. Navigate to the thermostat screen and click on the + sign or - sign in order to change the first digit of the password of your Honeywell Thermostat. Once the first number appears, click on the "Select ...Printable and downloadable honeywell th5220d1029 focuspro 5000 user guide pdf. FocusPRO 5000 Non-Programmable Thermostat Owner's Manual. Model: TH5110D,TH5320U,TH5220D. English,French,Spanish. Download (PDF, Unknown) FocusPRO 5000 Non-Programmable Thermostat Installation Manual. Model: TH5110D,TH5320U,TH5220D.this my video is show how to operate and how to lock and unlock the Honeywell air conditioning controller. hope this video is help one each of your thank you...The Honeywell RTH8500D is a thermostat designed to provide precise temperature control for residential heating and cooling systems. This thermostat features a large touchscreen display, making it easy to read and navigate through the various settings and options. With its backlit display, it can be easily viewed in any lighting condition.Hi, my name is Tamar. I'm your personal HVAC/APPLIANCE Expert on JustAnswer. First of all I would like to thank you for using JustAnswer I'm sorry to hear you're having issues with your equipment today. I know first hand how frustrating that can be if you give me a few moments I will provide a response to you on your issue.Description. Use Honeywell TH8320U VisionPro 8000 Series touch-screen programmable thermostat (TH8320U1008, TH8320U1016) to set the correct temperature in your home. Thanks to the large number of settings, you will be able to choose the right mode and convenient parameters. In the operating manual on 32 pages you will find all the …To help, we’ve put together a step-by-step video explaining the process of how you can unlock your Honeywell T4 Pro Thermostat! Steps 1) From the locked home screen, press the center button. 2) Enter the passcode. The default passcode when the Honeywell T4 Pro is partially or fully locked is 1234. Press the Plus or Minus buttons to …FocusPRO™ TH6110D/TH6220D Programmable Thermostat 3 Operating Manual 2 About your new thermostat Congratulations on the purchase of your new Honeywell thermostat.It has been designed to give you many years of reliable service and easy-to-use,push-button climate control. Features • Separately programmable weekday/weekend schedules.How to unlock Honeywell 6000 thermostat. Press Hold for two seconds to temporarily disable the automatic program. Press the Up or Down button to increase or decrease the current temperature setting. …Previously we posted a video on how to program the Honeywell T6 Pro thermostat; we got a lot of feedback on the video, and the main question that kept poppin...On other models, you have to press and hold the Second and fourth black buttons simultaneously. Use the arrow buttons to change the number on the lower-left corner of the screen to 0670. Press the arrow buttons again to get the number "0". Press "DONE" to confirm. To unlock the thermostat using the code: Press "MENU".Page 26: Cleaning The Thermostat Screen Cleaning the thermostat screen When you select the Clean Screen option, MENU the screen is locked so you don’t accidentally change settings while you clean. Clean Screen MENU 1 Touch Clean Screen 2 Select . A prompt asks if you want to clean the screen for 30 seconds. Page 27: Software UpdatesResetting a Honeywell thermostat is simple and only takes a minute or two to complete. Either refer to your Honeywell control manual to reset it or follow the guide below that outl...Page 16: Cleaning The Thermostat Screen Cleaning the thermostat screen When you select the Clean Screen option, the screen is locked so you don't MCR34100 accidentally change settings while you clean. 1 Touch MENU. Clean Screen Security Settings 2 Select Clean Screen. A prompt asks if you want to clean the screen for 30 seconds.• Heat: Thermostat controls only the heating system. • Cool: Thermostat controls only the cooling system. • Off: Heating and cooling systems are off. • Auto: Thermostat automatically selects heating or cooling depending on the indoor temperature.** • Em Heat (only for heat pumps with auxiliary heat): Thermostat controlsPage 51: Clean Your Thermostat Screen Clean Your Thermostat Screen 1. Press the Screen key. The thermostat locks out all touch keys for 30 seconds to allow for cleaning. 2. Use a damp cloth slightly moistened with water or household glass cleaner to clean the screen. Page 52: Use Your Filter TimerClean the slot from dust and insert the new batteries. Ensure that you place the positive and negative sides of the batteries in the appropriate positions and slide the slot back into the thermostat. If the thermostat display is still blank, you have to keep on troubleshooting. Step 4. Check the wiring.Works on Honeywell T7350 Thermostats and similar modelsStep 4. Wait a second. The "Locked" icon disappears from the screen. You can now use your Carrier thermostat as normal. Advertisement. Carrier thermostat control panels come with a built-in "button lock" for preventing accidental changes to your home temperature settings. The button lock also stops children or others in your home from changing ...1 How to change batteries in Honeywell T6 pro Thermostat? (Step-by Step) 1.1 Step 1: Take off the thermostat face plate. 1.2 Step 2: Locate old batteries at the back side of the face plate. 1.3 Step 3: Remove the old batteries and replace with new ones. 1.4 Step 4: Reattach the face plate to the base plate.Description. Read the user guide on this page to properly set up the operation of the touch-screen programmable thermostat with RedLINK (TH8110R1008). This will allow you to understand the capabilities of the device. The document contains a 44 of pages in English with detailed descriptions and pictures of the Honeywell TH8110R VisionPro 8000 ...In this video I talk about how you you can reset your HoneyWell Thermostat!#Honeywell #THERMOSTAT #DIYIf you do see these, then you have successfully unlocked the screen on your Honeywell thermostat. The unlocked form of the-Main Menu- screen, scrolled down to show unlocked options. 8. Done with How to Unlock Honeywell Thermostat ! You are now free to change any setting you wish on the main menu. Thermostat unlocking is …Opening your Honeywell thermostat is a fairly simple and quick task. There are two different kinds of openings that Honeywell thermostats have. They either have a slide or swing op...Apr 26, 2024 · If you do see these, then you have successfully unlocked the screen on your Honeywell thermostat. The unlocked form of the-Main Menu- screen, scrolled down to show unlocked options. 8. Done with How to Unlock Honeywell Thermostat ! You are now free to change any setting you wish on the main menu. Thermostat unlocking is now complete. Sep 26, 2023 · Whether you’ve accidentally locked your thermostat or want to change the lock code, this guide will provide step-by-step instructions for unlocking different models of Honeywell thermostats. Unlocking a Honeywell thermostat is a simple process that can be done by following specific instructions for your model. There are different lock modes ... Press the Run button if you wish to cancel either override and resume the schedule. The word Hold will disappear and the thermostat will be set to the temperature programmed for the current period. Also ensure that the heat - off - cool switch is set to the desired run mode. Remember, after you set the desired setpoint and select your desired ...Tapping the Preferences button brings up that screen. When you see it, scroll with the down-arrow key. Then stop at the “Restore Factory Defaults” button as circled in red in the next picture. The -Menu->Preferences page. Showing the -Restore Factory Defaults- button.Troubleshooting a Blank Screen on Your Honeywell Thermostat • Is your Honeywell thermostat screen blank? Don't panic! Our video will guide you through troubl... 2. Tap the Security Settings Option. The Security Settings screen then displays, as shown next. The t-stat, displaying its -Security Settings- screen. 3. Tap the Change Lock Mode Button to Continue with How to Lock and Unlock a Honeywell Thermostat. This brings up the Change Lock Mode screen, as shown next. Don't see any reset features or batteries for this thermostat. Sometimes installing the batteries backwards will reset the system. Not much else I can offer for a solution except to contact Honeywell direct and they may have a way to communicate with it over the WiFi, if not it may have to be replaced if it won't unfreeze.If the screen lock is still locked with the padlock icon, do one thing that tries " Unlock the Keypad" procedure with the "0000" lock code. A full line of Trane programmable and non-programmable, Trane wifi thermostat are available to fit most customer needs.How to unlock a honeywell thermostat: step bye step guide - smart livity My honeywell th4110u2005 is not working and is displaying a triangle Oem honeywell t4 pro programmable 1h/1c thermo ... The screen is blank. honeywell, th6320wf1005. just now noticed it. tookHoneywell th9421c1004 installation manual pdf download How to unlock honeywell ...Aug 13, 2021 ... !!!!!!!!!!!!!!!!!!!!!! If you're going crazy trying to figure out how to change the Day, and Time. You have to pull the thermostat off the wall ...Installer Set Up options can be edited in the advanced menu. To access the advanced menu, from the home screen press and hold Menu for 5 seconds. Press the...Aug 18, 2023 ... ... Honeywell T6 Pro Touch Screen Thermostat w/ wifi: https://amzn.to/3YzWz69 Contact: [email protected] Thank you to the following artist ...This video shows you step-by-step instructions on how to program a Honeywell 2300B thermostat.Check out my video on how to install this Honeywell thermostat ...Page 16: Cleaning The Thermostat Screen Cleaning the thermostat screen When you select the Clean Screen option, the screen is locked so you don't accidentally change settings while you clean. 1 Touch MENU. Clean Screen Security Settings 2 Select Screen. A prompt asks if you Clean want to clean the screen for 30 seconds.Amazon store:🇺🇸https://www.amazon.com/shop/fixmyhome👉Shop great tools and products in my 👈🔥 https://www.fixmyhomestore.com/ 🔥 👉Shop great tools ...Page 16: Cleaning The Thermostat Screen Cleaning the thermostat screen When you select the Clean Screen option, the screen is locked so you don't accidentally change settings while you clean. 1 Touch MENU. Clean Screen Security Settings 2 Select Screen. A prompt asks if you Clean want to clean the screen for 30 seconds.This Honeywell Home PRO 3000 Non-Programmable Thermostat from Resideo offers basic operation such as a slide switch for selecting heat, cool, or operate the fan. The backlit digital display makes temperature and settings easier to read in various lighting conditions. SELECT A MODEL: PRO 3000 1 Heat/1 Cool Non-Programmable Digital Thermostat.Follow the instructions below to lock the keypad of your T4 Pro Programmable Thermostat: On the gadget's touchscreen, tap' Menu.'. Using the (+) or (-) buttons, navigate to the 'Lock' option. Select the one you want. Select the lock mode by tapping the (+) or (-) buttons. To confirm your decision, tap Select.Access the Installer Setup by pressing the System button and holding the center blank box at the bottom of the thermostat for 5-10 seconds until the screen changes (TH8320WF / RTH8580WF). On the TH8321WF, select the Menu > Installer Options, then enter the Date Code (located on the back of the thermostat or from the Menu …In today’s digital age, screen recording has become an essential tool for many individuals and businesses alike. Whether you need to create tutorials, record gameplay, or capture o...Step 1: Shut off the power to the thermostat by switching off the appropriate circuit breaker in the home’s circuit breaker box. This precaution is crucial for electrical safety while working with the thermostat wires. Step 2: With the power shut off, the cover can be carefully removed either by pulling it straight out from the wall or ...3.4K. 204K views 2 years ago. In this video I show you how to unlock the Honeywell Pro Series Thermostat. I show you step by step how to unlock the …Aug 13, 2018 · I have a furnace and thermostat that were installed in November. The Thermostat is a Honeywell Home Focus Pro. I have 5 buttons with no labeling … read more. EdwardG326. HVAC service technicians. Organizational Management. 64 satisfied customers. Thermostats locked. Honeywell th8320r1003. 3 weeks. every. Mar 5, 2020 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ... I have a furnace and thermostat that were installed in November. The Thermostat is a Honeywell Home Focus Pro. I have 5 buttons with no labeling … read more. EdwardG326. HVAC service technicians. Organizational Management. 64 satisfied customers. Thermostats locked. Honeywell th8320r1003. 3 weeks. every.The T6 Pro thermostat has the ability to lock the screen. The options are either "PART" for a partial lock, "ON" for full lock, or "OFF" for no lock. From the Home screen, press the Menu button. Press the > button until the word LOCK appears on the screen. Press the Select button. Press the < or > button to scroll between "OFF", "ON", …Learn more about Honeywell Thermostats from Resideo at: https://bit.ly/3mD8GLwThis video will show you how to use and Program Schedules for the RTH7600D 7-Da...Honeywell Model TH621OU2001 locked. Buttons are not labeled. Honeywell Model TH621OU2001 locked. Contractor's Assistant: I'll do all I can to help.We show here cancelling the Hold function on our Honeywell RTH9580WF smart thermostat. In this demo, we start off with our thermostat set to Temporary Hold. But this same procedure works when Temporary Hold is in effect. It's just the name of the Hold button that changes. 1. Go to the Honeywell Home Thermostat's Home ScreenAug 17, 2023 ... ... Screen Thermostat w/ wifi: https ... UnLOCK Honeywell Home T6 Pro | UNLOCKING Device Pin Code | WiFi Z-Wave SMART Thermostat ... Manual Thermostat | ...Ensure that the thermostat is unlocked and that the rotary dial is in the RUN position. Press the NEXT key for at least 5 seconds. The words "ENTER CODE" will appear on the screen, above "0000". Press the HOLD key for at least 2 seconds. The words "SET CODE" will appear above the "0000". Enter your desired custom code by using ...If the screen of your Honeywell thermostat is blank, you should first check the furnace or air conditioner to be sure both are on and functioning properly. If the door to the furnace is open, for instance, the thermostat display may be blank. A fix could be as simple as closing the door of the furnace. You should also check the circuit breaker ...Touch "Menu" on the thermostat home screen. Then, tap on the left or right arrows until you see SCREEN LOCK, then tap on "Select.". Use the left or right arrows to select the screen lock setting you want. Then, touch on "Select" to confirm. A PIN will appear on the screen. Write it down and keep it safe.The Honeywell home thermostat unlock code is a four-digit code that can be used to unlock the thermostat's advanced settings. These settings include options3.4K. 204K views 2 years ago. In this video I show you how to unlock the Honeywell Pro Series Thermostat. I show you step by step how to unlock the thermostat and enter the password....• Heat: Thermostat controls only the heating system. • Cool: Thermostat controls only the cooling system. • Off: Heating and cooling systems are off. • Auto: Thermostat automatically selects heating or cooling depending on the indoor temperature.** • Em Heat (only for heat pumps with auxiliary heat): Thermostat controlsFollow a simple step-by-step procedure to reset the screen-lock on your Honeywell 8000 thermostat. Press the "System" key to access "Advanced Settings." Five blank touch-keys will appear on the screen between the "Done" key and the "Cancel" key. Push and hold the center blank key for five seconds. A "User Setup Number" will appear in the lower ...Ok I believe if you press and hold the 2nd and 4th empty squares at the same time for 3 seconds you will get into the installer menu try that. Ask Your Own HVAC Question. I will try that when I get home. I think I tried many combinations of holding those empty squares but I will give it a try and let you know.If you do see these, then you have successfully unlocked the screen on your Honeywell thermostat. The unlocked form of the-Main Menu- screen, scrolled down to show unlocked options. 8. Done with How to Unlock Honeywell Thermostat ! You are now free to change any setting you wish on the main menu. Thermostat unlocking is now complete.Reset Clock. Press the virtual "Clock" button located along the bottom edge of the thermostat's screen. Press the "Up" and "Down" buttons to manipulate the time displayed on the screen. Press and hold either button to change the numbers more quickly. Press "Done" to save your changes and exit the Clock screen.Try this procedure; Press the "System" key to access "Advanced Settings." Five blank touch-keys will appear on the screen between the "Done" key and the "Cancel" key. Push and hold the center blank key for five seconds. A "User Setup Number" will appear in the lower left-hand corner of the screen.To help, we’ve put together a step-by-step video explaining the process of how you can unlock your Honeywell T4 Pro Thermostat! Steps 1) From the locked home screen, press the center button. 2) Enter the passcode. The default passcode when the Honeywell T4 Pro is partially or fully locked is 1234. Press the Plus or Minus buttons to change the ...To fix this issue, press and hold the Connect button on the wireless sensor for about 15 minutes. Wait for the LED to turn Amber. Next, return to your thermostat menu and press Menu, Devices, and then Sensors. Follow the instructions on the screen to add the sensor. This should fix the problem.To unlock screen, see the Advanced Settings section. The. screen continuously displays SCREEN LOCKED. Partially Locked Screen. When partially locked: — Pressing a locked key prompts the screen to indicate. LOCKED for five to seven seconds. — Pressing an unlocked key with LOCKED shown removes. LOCKED from the display.You may use the steps below whether you have a basic or touch-screen device for how to unlock Honeywell Pro series Thermostat. Step 1: Press “Menu” on your thermostat. Step 2: Next, you must search the menu for the lock screen by choosing + or -signs. Then press Select to open the LOCK Screen.

The 4 digit PIN code used to fully or partially lock the screen of the T6/T6R Smart Thermostat cannot be changed and is unique to each thermostat. The PIN code is the sum of 1234 + Date Code. For example, if the date code of your T6/T6R thermostat is 1640, the PIN for the T6/T6R will be: 1234 + 1640 = 2874. Note: 1.. Holzer pattonsville road

honeywell thermostat how to unlock screen

Previously we posted a video on how to program the Honeywell T6 Pro thermostat; we got a lot of feedback on the video, and the main question that kept poppin...I have a Honeywell touch screen thermostat and I forgot my PIN number how do I reset the or remove the old PIN. Contractor's Assistant: I understand that you forgot your PIN number for your Honeywell touch screen thermostat, and the HVAC Technician will be able to assist you with resetting or removing the old PIN. Have you tried entering the default PIN number for your Honeywell touch screen ...Step 1: Turn off the thermostat. Before you start working on your thermostat, make sure to turn it off. This will prevent any electrical accidents and ensure that you can work safely. Step 2: Remove the faceplate. You need to remove the faceplate of the thermostat. The faceplate is typically held in place by clips.The thermostat CANNOT be used with: a resistive load under 0.83 A. a resistive load over 8.3 A. a system driven by a contactor or a relay (inductive load) a fan-forced heating system (e.g. : fan-forced convector) a central heating system. WARNING Electrical Shock Hazard. This thermostat is a line voltage control (120-240 Volts).How do I reset my Honeywell Home device? Last updated. 5/12/23. First, choose your thermostat from the menu below. Then follow the directions for the type of …Whether you’ve accidentally locked your thermostat or want to change the lock code, this guide will provide step-by-step instructions for unlocking different models of Honeywell thermostats. Unlocking a Honeywell thermostat is a simple process that can be done by following specific instructions for your model. There are different lock modes ...Try This Maybe it will work. 1. Press your Honeywell thermostat's "System" key. Five blank touch keys will appear on the bottom of the screen between the "Cancel" key and the "Done" key. 2. Touch the blank center key and hold it down for approximately 5 seconds until the screen changes to the "Advanced Settings" menu.The Honeywell THX9421R5021WW/U thermostat is compatible with wireless indoor sensors. You can set the system to monitor temperature at the thermostat or at the sensor location, or use an average of both to optimize comfort throughout the home. The thermostat can use up to 6 wireless indoor sensors.Please try again. Check the name or model number of your product to ensure it's correctly written in the search bar above. If you're looking for a product that isn't a thermostat, try checking here.You can easily unlock your Honeywell thermostat, even if you forgot the code; first, try inserting 1234. If that didn’t work, find the date code on the subbase, add …To reset the system’s schedule, press the System button. Next, hold the blank box that’s in the center of the screen. When the numbers panel comes up, enter 0165 on the left and the number one on the right. Now press Done and your thermostat should have a reset schedule.Page 16: Cleaning The Thermostat Screen Cleaning the thermostat screen When you select the Clean Screen option, the screen is locked so you don't accidentally change settings while you clean. 1 Touch MENU. Clean Screen Security Settings 2 Select Screen. A prompt asks if you Clean want to clean the screen for 30 seconds.Description. Read the user guide on this page to properly set up the operation of the touch-screen programmable thermostat with RedLINK (TH8110R1008). This will allow you to understand the capabilities of the device. The document contains a 44 of pages in English with detailed descriptions and pictures of the Honeywell TH8110R VisionPro 8000 ...This video is about the Honeywell 9000 Wi-Fi thermostat setting up the Screen lock and resetting the passwordIn this video I am going to share How to Unlock a Honeywell Thermostat?This way you can know How to Lock and Unlock Honeywell Thermostat?We are going to cove...1. Honeywell TH9320WF5003 Wi-Fi Thermostat. If you’re looking for a thermostat with password protection functions, this is one of those that tick all the boxes. This Honeywell thermostat allows you to set a unique code for locking and unlocking the unit, which ensures total protection from tampering.Step 1: Shut off the power to the thermostat by switching off the appropriate circuit breaker in the home’s circuit breaker box. This precaution is crucial for electrical safety while working with the thermostat wires. Step 2: With the power shut off, the cover can be carefully removed either by pulling it straight out from the wall or ...I locked T5 gray screen Thermostat it and tried to use the Pin 1234 to unlock but that doesn't work, I saw a pin on the screen but missed it. It started with a 3. The Thermostat is a Pro Series I thin … read more351. 49K views 5 years ago MID WALES PLUMBING & HEATING SUPPLIES LIMITED. In this video, Richard shows you how to lock and unlock ….

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