Three wires to the living space allows for easy equipment upgrade without having to run additional thermostat wire. However, the gas heat w/fan worked fine. Find helpful customer reviews and review ratings for Honeywell THM5421C-1008 Interface Module at Amazon. 3 possible causes and potential solutions. and an outside temp sensor for the heat pump. I just assumed a newer house (~10 yrs old) wouldnt have any issue with having the thermostat replaced. The ENERGY STAR® certified smart thermostat lets you choose the temperature, schedule, display color and the devices you use to control it all. going to an interface module, using a heat pump with aux backup. Replace Honeywell THM5421C with Emerson Sensi I want to install an Emerson Sensi replacing a Honeywell THM5421C. Honeywell TH9421C1004 Visionpro IAQ Thermostat. Thermostat Honeywell VisionPRO THM5421C1008 Quick Start Manual Iaq total home comfort system (4 pages) Thermostat Honeywell FocusPRO TH5220D Operating Manual Non-programmable digital thermostat (20 pages) Thermostat Honeywell FocusPRO TH5220D Installation Manual Non-programmable digital thermostat (20 pages). My current HVAC is a Trane XV80 - Gas heat variable fan CleanEffects whole how filtration air cleaner XL Series Heat Pump Aprilaire Humidifier - model 550. The Prestige IAQ thermostat kit can control humidification, dehumidification, ventilation, heating and cooling. They are operating a high efficient gas furnace and a heat pump. The LR43 is a small but powerful alkaline button cell battery that can be used to power a number of different devices, such as laser pointers, watches or cameras. Honeywell THM5421R1021 Equipment Interface Module. The honeywell thm5421c is the interface for the honeywell VisionPRO IAQ. Turn off the main power to your system at the breaker box Before you turn off the power, make sure each wire coming to your thermostat is a different color. THM5421C is a 3-wire thermostat that is connected to the unit via the EIM. Honeywell TH9421C1004 Installation Manual. Equipment Interface Module. Installing Ecobee4 - Bypassing Honeywell EIM Clinton James Brown 130 subscribers Subscribe 172 Share 23K views 5 years ago Bypassing the Honeywell EIM. 2 Link the thermostat to the equipment interface module. There’s nothing worse than when a power transformer fails. The thermostat is only using the red, white and blue wires. TRY THE TOOL WIRING COMPATIBILITY FAQS What is a C Wire? What if I dont have a C Wire? STILL NEED HELP?. Finally, it occurred to me to jump the red and yellow on the furnace--and sure enough the a/c came on. The TH8321R1001 is a suggested replacement for YTH9421C1002. This product does not include the EIM module (THM5421R1021) which was included with YTH9421C1002. I then carefully checked all wiring to the THM5421C equipment interface module. THM5421C1008: -30°F to 150°F (-34°C to 66°C). Thermostat connects with Equipment Interface Module or EnviraZONE panel to control temperature, humidification, dehumidification and ventilation from a single point in the home. Honeywell thm5421c Wiring 1h/1c Question. Wiring for Honeywell Equip Interface Module THM5421C to Thermostat RTH8500 9561 Views 6 Replies 3 Participants Last post by hvactech126 , Dec 2, 2013 W wgordon Discussion Starter · Dec 2, 2013 So on the interface module and old thermostat everything is wired to 1, 2, and 3. Honeywell THM5421C-1008 Interface Module by Honeywell Write a review How customer reviews and ratings work Search Sort by Top reviews Filter by All reviewers All stars Text, image, video 5 total ratings, 3 with reviews From the United States Michell A. Honeywell PRESTIGE THX9421 Manuals. THM5421C1008 Honeywell - THM5421C1008 VisionPRO IAQ interface module, premier white, for the Vision Pro IAQ Total Home Comfort System. JustAnswer Custom AboutPressCopyrightContact. This thermostat is on the 1st floor and controls that level. This interface is discontinued but is supposed to be replaceable with the thm5421r. Check Compatibility APP STATUS Your issue may be related to a system outage on one of our applications. For up to 4 Heat/2 Cool systems with Honeywell THM5421C or equivalent. Hello Gurus! Im in the middle of switching out my current THM5421C thermostat with a new one and was hoping to get some direction on how. Im not very good with electric, but I have replaced thermostats in the past with no issue, but have never dealt with an EIM. Database contains 1 Honeywell thm5421c Manuals (available for free online viewing or downloading in PDF): Installation manual. Install NEST Thermostat to replace Honeywell 7. Thermostat Honeywell VisionPRO THM5421C1008 Quick Start Manual Iaq total home comfort system (4 pages) Thermostat Honeywell FocusPRO TH5220D Operating. Compare with similar items Product Description Product Description The Remote Indoor Temperature Sensor is used to sense temperature remotely. Wiring for Honeywell Equip Interface Module THM5421C to. Honeywell THM5421C-1008 Interface Module by Honeywell Write a review How customer reviews and ratings work Search Sort by Top reviews Filter by All reviewers All stars Text, image, video 5 total ratings, 3 with reviews From the United States Michell A. RedLink is their wireless link that allows you to have buy a honeywell Internet Gateway and push all your settings to their cloud. HONEYWELL THM5421C-1008 THM5421C1008 DISCONTINUED BY MANUFACTURER INTERFACE MODULE HUMIDITY CONTROL 4 HEAT / 2 COOL STAGES Documents CLICK HERE for Manufacturer Datasheet $53. MANUALS ( 1) Install Instructions Direct Replacement: Equipment Interface Module (EIM) for all Prestige IAQ and new RedLINK VisionPRO Thermostats Brand: Honeywell Home SKU: THM5421R1021 ( 7) In Stock Get 463 Fri, May 5. Honeywell thm5421c Installation manual (16 pages) Pages: 16 / Size:. Notes on the furnace indicate each thermostat is a separate zone. My current HVAC is a Trane XV80 - Gas heat variable fan CleanEffects whole how. They want me to replace all the control units with their new 5421 replacement that has RedLink and all the thermostat with the new fancy ones. Product Description Warranty THM5421C1008 DISCONTINUED BY MANUFACTURER INTERFACE MODULE HUMIDITY CONTROL 4 HEAT / 2 COOL STAGES FACTORY WARRANTY MAY NOT APPLY. THM5421C to>Wiring for Honeywell Equip Interface Module THM5421C to. HONEYWELL PRESTIGE THX9421 Manuals. System Types CAUTION: ELECTRICAL HAZARD. Replacing th9421c1004 with th8110r1008 where does the three wires hook up RobHVAC satisfied customers satisfied customers Rick I have a Honeywell thermostat TH9421c1004 with 3 wires … Tamar D Mechanic II Vocational, Technical or Tra satisfied customers … Twa252842 I have a Honeywell TH9421C1004 thermostat with a three wire … >. This interface is discontinued but is supposed to be replaceable with the thm5421r. Dehumidification Setting Range: Heating: 40% to 80% RH. Enter it here for your fast and easy solution: Need help finding your model number? or Let Us Diagnose The Problem Select “Common Problems” below and we’ll help you discover the cause of your problem. I want to install an Emerson Sensi replacing a Honeywell THM5421C. Honeywell THM5421C1008 User Manual. Terminals are labeled 1, 2, and 3 on EIM and labeled data, R, and C on the current thermostat HVAC Technician: Tamar D how old is this EIM? the new prestige systems use 2 wire. Humidifier Repair Help Videos. The TH9421C1004 is a VisionPRO IAQ touchscreen universal programmable thermostat that provides electronic control of 24 Vac heating and cooling systems in addition to humidification, dehumidification and ventilation all with just 3 wires to the thermostat. None of the thermostats have a C wire. Turns out I have a Honeywell THM5421C EIM interface that will need to be bypassed if I want to do any sort of thermostat upgrade. Inventory Details Order by 5PM, receive Friday MANUALS ( 1) Install Instructions This item replaces: THM5421R1005, THM5421R1013 Free Shipping On orders over $99 Easy Returns No restocking fee for 90 days Product Highlights – 4 Heat/2 Cool Heat Pump, 3 Heat/2 Cool 24v Description – Overview. Hello Gurus! Im in the middle of switching out my current THM5421C thermostat with a new one and was hoping to get some direction on how to properly connect it to my current unit setup. Honeywell EIM: retrofit, upgrade or replace? : r/homeassistant. 5 volts and measures approximately 11. It looks like you have heat pump, so you need at least 6 wires (R,W/Aux,Y,G,O/B,C). Apart from taking labor costs out of the equation, you can work on your window on your own terms and timeline and get work done just the way you want it. Keith Specialty Store - Small Company - Great Service - reviews. 97 Four sensor inputs for wired sensors or dry contact devices Three sets of IAQ contacts to control humidification, dehumidification, and ventilation. Having a cracked windshield makes it harder to see the road and is also a safety hazard. I have not been able to determine if this unit works with my. Honeywell VisionPRO IAQ Installation Manual. THM5421C1008 Honeywell - THM5421C1008 VisionPRO IAQ interface module, premier white, for the Vision Pro IAQ Total Home Comfort System. Device Replacement and Specifications. Here is the installation of a Honeywell thermostat. Does Honeywell manufacturer a thermostat that will allow me. HONEYWELL THM5421C INSTALLATION MANUAL Pdf …. Inventory Details Order by 5PM, receive Friday MANUALS ( 1) Install Instructions This item replaces: THM5421R1005, THM5421R1013 Free Shipping On orders over $99 Easy Returns No restocking fee for 90 days Product Highlights – 4 Heat/2 Cool Heat Pump, 3 Heat/2 Cool 24v Description – Overview. OBSOLETE - REPL With TH8321R1001 + THM5421R1021 OBSOLETE - REPL With TH8321R1001 + THM5421R1021. Accessories / Replacement Parts: Part Number: Equipment Interface Module: THM5421R1021: Equipment Remote Module (outdoor unit or boiler) ERM5220R1018*. If you don’t hear the system turn on within 5 minutes, the power is off. Thm5421c ReplacementThermostat Honeywell VisionPRO THM5421C1008 Quick Start Manual Iaq total home comfort system (4 pages) Thermostat Honeywell FocusPRO TH5220D Operating Manual Non-programmable digital thermostat (20 pages) Thermostat Honeywell FocusPRO TH5220D Installation Manual Non-programmable digital thermostat (20 pages). The breakers in your home stop the electrical current and keep electrical circuits and wiring from overloading if something goes wrong in the electrical system. You can test wire continuity using a continuity tester. Thermostat Honeywell VisionPRO THM5421C1008 Quick Start Manual Iaq total home comfort system (4 pages) Thermostat Honeywell FocusPRO TH5220D Operating Manual Non-programmable digital thermostat (20 pages) Thermostat Honeywell FocusPRO TH5220D Installation Manual Non-programmable digital thermostat (20 pages). So on the Equipment Interface Module from furnace I have coming in: R Red C Blue W1 White W2 Yellow G Green Wires from Thermo to Equip. Product Description Warranty THM5421C1008 DISCONTINUED BY MANUFACTURER INTERFACE MODULE HUMIDITY CONTROL 4 HEAT / 2 COOL STAGES FACTORY WARRANTY MAY NOT APPLY. Change the temperature on your old thermostat to be above room temperature in heat mode or below it in cool mode. The honeywell thm5421c is the interface for the honeywell VisionPRO IAQ. Bypassing Honeywell EIM to install Nest. Honeywell THM5421C 1008 IAQ interface module. 1 Honeywell THM5421R1021 Equipment Interface Module Installation Guide 2 1 Install thermostat 3 2 Install equipment interface module 4 3 Power optional RedLINK accessories 4. Your small, hometown-attitude company Keith Specialty Store 6791 Rt 119 Hwy N, Marion Center, PA 15759 US callers: 800-705-8838 FAX: 724-397-2228. Computer dictionary definition of what replace means, including related links, information, and terms. THM5421C cannot be used with any other model of the thermostat. Replacing a breaker is an easy step-by-step process, according to Electrical-On. Honeywell THM5421R 1021 equipment interface module, use with all Prestige IAQ and RedLINK VisionPro thermostats to control up to 4 stages of heat and 2 stages of cooling in a heat pump system or 3 stages heat and 2 stages cooling in a conventional system, has 3 sets of Universal IAQ contacts for humidification. Honeywell thm5421c: Frequently viewed Manuals Heatmiser DT-WTS1 User Manual Operation & user’s manual (13 pages) Lennox ELITE Series Installation Instructions Manual Installation instructions manual (50 pages) Center 340017 Installation Manual Installation manual (4 pages) Silvercrest RT2000 Operating Manual Operating manual (54 pages). If it is above thirty degrees the heat pump is activated. 2-6) SYSTEM 0120 HEAT 6:00 Inside AUTO DONE Inside SYSTEM DONE CANCEL HEAT Function Setting 6:00 0120. 800-705-8838 or 724-397-8838 View Cart. My home has a honeywell thermostat (THM5421C)! It has 3 wire: DATA,R and C. Other replacement batteries for the L736 include the LR736, G3, V3GA, LR41 and RW47. See current status of Resideos mobile applications below Total Connect Comfort App NOT THE DIY TYPE? Contact a local professional partner. Identify a thermostat wire. These guidelines will show you how to replace a transformer and get eve. Account & Lists Returns & Orders. Condition: Used HONEYWELL THM5421C-1008 THM5421C1008 DISCONTINUED BY MANUFACTURER INTERFACE MODULE HUMIDITY CONTROL 4 HEAT / 2 COOL STAGES Documents CLICK HERE for Manufacturer Datasheet. Customer reviews: Honeywell THM5421C. Note: If you have a digital thermostat that has a blank display, OFF ON OFF Switch Breaker box skip this step. THM5421C-1008 Controls & Indicators from HONEYWELL 2-Year Warranty - DISCONTINUED BY MANUFACTURER, INTERFACE MODULE, HUMIDITY CONTROL, 4 HEAT / 2 COOL STAGES Shop Online Search Product. Humidity Display Range: 0% to 99%. HONEYWELL THM5421C-1008 THM5421C1008 DISCONTINUED BY MANUFACTURER INTERFACE MODULE HUMIDITY CONTROL 4 HEAT / 2 COOL STAGES Documents CLICK HERE for Manufacturer Datasheet $53. × This is an official Honeywell replacement part. Follow these steps for front windshield repla. Replacement batteries for the L736 silver-oxide type battery include the SR41W, SR736, 280-13, L736S and AG03 batteries. 1Follow prompts on the screen to select appropriate options. Find helpful customer reviews and review ratings for Honeywell THM5421C-1008 Interface Module at Amazon. The EIM is Honeywell THM5421R actual wiring before fix After fix according to OhighOent suggestion 2 Related Topics HVAC Skilled trades Careers 5 comments Add a Comment OhighOent • 1 yr. The WiFi Smart Color Thermostat works seamlessly with Amazon Alexa and Google Home, as well as our mobile app, so you can control the temperature anywhere inside or outside your home. One of the sites listed the VisionPro 8000 as a replacement unit for less than have the price as the discontinued model. While I try most of the time to keep my pol. Replace Honeywell THM5421C with Emerson Sensi I want to install an Emerson Sensi replacing a Honeywell THM5421C. After they receive your request, the company first verifies that the Tupperware piece is under warranty and can be replace. 4th thermostat is a Honeywell IAQ on the 1st floor. Thermostat Controller Control Unit Security Camera Accessories. My home has a honeywell thermostat (THM5421C)! It has 3 wire: DATA,R and C. Find helpful customer reviews and review ratings for Honeywell THM5421C-1008 Interface Module at Amazon. Thermostat can be mounted on 2 x 4 J box or on drywall or plaster using included wall. Use our tool to determine which thermostats work with your home’s existing wiring. THERMOSTAT WIRING COMPATIBILITY Unsure if Honeywell Home thermostats from Resideo are compatible with your home? Use our tool to determine which thermostats work with your home’s existing wiring. Lots of conversation yesterday about President Obama’s $500,000 cap on senior executive pay for the distressed financial institutions receiving bailout money. The WiFi Smart Color Thermostat works seamlessly with Amazon Alexa and Google Home, as well as our mobile app, so you can control the temperature anywhere inside or outside your home. Alternatively referred to as Search and Replace, Find and Replace or Replace is finding tex. Inventory Details Order by 5PM, receive Friday MANUALS ( 1) Install Instructions This item replaces: THM5421R1005, THM5421R1013 Free Shipping On orders over $99 Easy. 9561 Views 6 Replies 3 Participants Last post by hvactech126, Dec 3, 2013. Smart response technology learns your schedule and temperature preferences to take the guesswork out of programming. My home has a honeywell thermostat (THM5421C)! It has 3 wire: DATA,R and C. Must be installed by a trained, experienced technician. Im trying to connect a TH8320R1003 thermostat to a THM5421C…. Hello Gurus! Im in the middle of switching out my current THM5421C thermostat with a new one and was hoping to get some direction on how to properly connect it to my current unit setup. Disconnect power before beginning installation. Installing Ecobee4 - Bypassing Honeywell EIM Clinton James Brown 130 subscribers Subscribe 172 Share 23K views 5 years ago Bypassing the Honeywell EIM (Equipment Interface Module) to install the. My current HVAC is a Trane XV80 - Gas heat variable fan CleanEffects whole how filtration air cleaner XL Series Heat Pump Aprilaire Humidifier - model 550 I have an eight wire run. The Right Parts for the Job We carry more than 4 million parts from over 150 major brands, so chances are, weve got the part you need. 1 Install batteries in RedLINK accessories. Was hoping you could assist me in finding a newer model that works. THM5421C1008: -30°F to 150°F (-34°C to 66°C). The thermostat it self only has 3 wire connection coming from your THM5421c which is also called a EIM. Sorry, but this item is now OBSOLETE with no replacement. You need to eliminate the module and draw wires to the thermostat to use a Wi-Fi enabled model. Summary of Contents for Honeywell TH9421C1004 Page 1 Page 2 Installation Guide Installer setup Inside 2 Press and hold for 5 seconds 1 Press SYSTEM Press DONE to. The RCH9310WF, RCH9300WF, TH8732WF and the TH8732WFH can control humidity as well as heating and cooling. Im not very good with electric, but I have replaced thermostats in the past with no issue, but have never dealt with an EIM. A window replacement project can be a very rewarding DIY project in more ways than one. Failure to follow these instructions can damage the product or cause a hazardous condition. THM5421C1008 has been discontinued Discontinued April 13, 2022 This product was discontinued by the manufacturer. com: Customer reviews: Honeywell THM5421C-1008 Interface Module. Then there is C,R,RC,RH (The R, RC and RH are jumpered together) G,Y2,Y,W3-AUX2,W2-AUX,W-o/b. I have 3-heat zone, 2-cool zones system with three TH9421C1004 keypads and a Honeywell THM5421 controller (EIM, equipment interface module). anchors (drill 3/16 holes for drywall; 7/32 holes for plaster). What Are Some Replacement Batteries for an L736 Battery?. Learning how to replace your car’s headlights is a relatively easy task, and can save you time and money by not having to go to a professional to do it for you. Wiring for Honeywell Equip Interface Module THM5421C to Thermostat RTH8500. Product Description Warranty THM5421C1008 DISCONTINUED BY MANUFACTURER INTERFACE MODULE HUMIDITY CONTROL 4 HEAT / 2 COOL STAGES FACTORY WARRANTY MAY NOT APPLY. More Details This is an official Resideo (Honeywell Home) replacement part. com/home/products/thermostats/The tool I useshttps://www. If the crack is too large to repair, you may need to remove the damaged windshield and install a new one. You would test across R and C, and another terminal and C when there is a thermostat call. Id like to upgrade it or replace it completely, maybe with a competing or retrofitting kit. I have 3-heat zone, 2-cool zones system with three TH9421C1004 keypads and a Honeywell THM5421 controller (EIM, equipment interface module). I have a red, white and blue wire read more. Replace Honeywell THM5421C with a new WiFi thermostat. Replace may refer to any of the following: 1. com/ythiJustAnswer Customer: I have a TH9421C1004 Thermostat connected to a THM5421C Equipment Interface Module. Honeywell thm5421c Manuals and User Guides, Thermostat. Replace Honeywell THM5421C with Emerson Sensi I want to install an Emerson Sensi replacing a Honeywell THM5421C. ago U terminals are dry contacts. Alternatively, you can replace both the thermostat and the module with RedLINK enabled thermostat and module. Honeywell thm5421c: Frequently viewed Manuals Heatmiser DT-WTS1 User Manual Operation & user’s manual (13 pages) Lennox ELITE Series Installation Instructions Manual Installation instructions manual (50 pages) Center 340017 Installation Manual Installation manual (4 pages) Silvercrest RT2000 Operating Manual Operating manual (54 pages). Honeywell PRESTIGE THX9421 System Installation Manual (28 pages) Honeywell thm5421c ; Honeywell th8320wf1029 ; HONEYWELL Categories. Humidification Setting Range: Heating: 10% to 60% RH. This thermostat is on the 1st floor and controls that. 00 WARNING: CHOKING HAZARD -- Small parts. Just trying to replace thermostat TH9421C1004 with new TH8320R1003 There are 3 wires connected to my current thermostat (TH9421C1004). R to u3-1 u3-2 to hum1 hum2 to C. The IAQ has 3 wires labelled 1 (red), 2 (white), 3 (green). Turns out I have a Honeywell THM5421C EIM interface that will need to be. It is attached to a Honeywell Equipment Interface Module THM5421C on the second furnace. Honeywell THM5421C-1008 Interface Module by Honeywell Write a review How customer reviews and ratings work Search Sort by Top reviews Filter by All reviewers All stars Text, image, video 5 total ratings, 3 with reviews From the United States Michell A. Honeywell THM5421C 1008 IAQ interface module, now obsolete Honeywell THM5421C 1008 Vision Pro IAQ total home comfort solution equipment interface module. HONEYWELL HOME Equipment Interface Module: …. Ive seen previous posts with similar issues so I get the basic gist that Ill have to disconnect wires from the EIM and go directly to the Nest. So on the interface module and old thermostat everything is wired to 1, 2, and 3. To replace broken Tupperware, contact the company’s customer care center directly through its toll-free phone number. I would like install wifi thermostats. I have not been able to determine if this unit works with my current THM5421C EIM. Replace Honeywell THM5421C with a new WiFi thermostat. Device Replacement and Specifications. You can test for power using a multimeter that can read AC voltage. Equipment Interface Module for TH9421C1004 Terminals for up to 4H/2C w/ humidifier dehumidifier and vent control. Furnace: Trane XV95 Thermostat: Honeywell TH9421C1004 Control Module: Honeywell THM5421CThe center third of my … read more Rick Supervisor 38,986 satisfied customers I a. 99 In Stock Add To Cart FIND A RETAILER Works with Total Connect Comfort App. Zone Panel Installation Guide for wiring diagrams. Bypassing Honeywell EIM to install Nest : r/Nest. THM5421C1008 Honeywell - THM5421C1008 VisionPRO IAQ interface module, premier white, for the Vision Pro IAQ Total Home Comfort System. Utility Rewards Available SELECT A MODEL: WiFi Color Touchscreen Thermostat $179. THM5421C1008 has been discontinued Discontinued April 13, 2022 This product was discontinued by the manufacturer. HONEYWELL THM5421C INSTALLATION MANUAL Pdf Download. If below thirty degrees the furnace is activated. It is attached to a Honeywell Equipment Interface Module THM5421C on the second furnace. THM5421C cannot be used with any other model of the thermostat. This interface is discontinued but is supposed to be replaceable with the thm5421r. 1 Honeywell THM5421R1021 Equipment Interface Module Installation Guide 2 1 Install thermostat 3 2 Install equipment interface module 4 3 Power optional RedLINK accessories 4. Honeywell THM5421C ou équivalent. 00 Out of stock Quantity Out of stock Buy 5, save 5% 2-Year Warranty Quality Guarantee Free Standard Shipping. They want me to replace all the control units with their new 5421 replacement that has RedLink and all the thermostat with the new fancy ones. Replace Honeywell THM5421C with Emerson Sensi I want to install an Emerson Sensi replacing a Honeywell THM5421C. RADWELL 2-YEAR WARRANTY INCLUDED Radwells 2 Year Warranty Radwell provides a 2-year warranty on every item we sell and repair. How to Replace a Transformer. (1) integration with home assistant is super important to me; I want to be able to automate the home/away. THM5421C1008 Honeywell - THM5421C1008 VisionPRO IAQ interface module, premier white, for the Vision Pro IAQ Total Home Comfort System. Humidifier is Aprilaire 700 Series and Furance is Armstrong A97USMV! furnace side: The wire connection as below: Is it compatible. thm5421c Thermostat Installation manual PDF View >Honeywell thm5421c Thermostat Installation manual PDF View. It is attached to a Honeywell Equipment Interface Module THM5421C on the second furnace. com/ythiJustAnswer Customer: I have a TH9421C1004 Thermostat connected to a THM5421C Equipment Interface Module. Equipment interface modules (EIMs) allow components of HVAC systems to communicate wirelessly, so wireless thermostats can be relocated or upgraded without opening walls and running new wires. Honeywell PRESTIGE THX9421 System Installation Manual (28 pages) Honeywell thm5421c ; Honeywell th8320wf1029 ; HONEYWELL Categories. Wiring for Honeywell Equip Interface Module THM5421C to Thermostat RTH8500 9561 Views 6 Replies 3 Participants Last post by hvactech126 , Dec 2, 2013 W wgordon Discussion Starter · Dec 2, 2013 So on the interface module and old thermostat everything is wired to 1, 2, and 3. Thermostatic Controls - Replace Honeywell THM5421C with Emerson Sensi - I want to install an Emerson Sensi replacing a Honeywell THM5421C. Honeywell Home THM5421R1021 IAQ Equipment Interface Module, Multicolor Brand: Honeywell 106 ratings -19% $9339 Was: $115. The interface is using the red, white and blue wires hooked up to the 1,2,3 for the thermostat. Use our tool to determine which thermostats work with your home’s existing wiring. Honeywell THM5421C 1008 IAQ interface module, now obsolete Honeywell THM5421C 1008 Vision Pro IAQ total home comfort solution equipment interface module. The honeywell thm5421c is the interface for the honeywell VisionPRO IAQ. I have an eight wire run from the Honeywell control unit to the thermostat in the hall but only three are being used (red,white,blue). Thermostats Security Air Quality Water Leak Detector Apps. Not getting 24VAC to humidifier solenoid valve from. Honeywell thm5421c Manuals & User Guides User Manuals, Guides and Specifications for your Honeywell thm5421c Thermostat. Ross but I like to tinker and it was very Reviewed in the United States on June 8, 2016. NOTE: Make sure accessories are at least 2 feet away from the EIM during the linking process. If two or more wires are the same. MERCURY NOTICE: If this product is replacing a control that contains mercury in a sealed tube, do not place the old control in. Plus, the full-color display is completely. Replacing th9421c1004 with th8110r1008 where does the three wires hook up RobHVAC satisfied customers satisfied customers Rick I have a Honeywell thermostat TH9421c1004 with 3 wires … Tamar D Mechanic II Vocational, Technical or Tra satisfied customers … Twa252842 I have a Honeywell TH9421C1004 thermostat with a three wire … >. More Details This is an official Resideo (Honeywell Home) replacement part. Honeywell TH8321WF1001 Touchscreen Thermostat WiFi Vision Pro 8000 with Stages Upto 3 Heat / 2 Cool 1,227 61 offers from $89. Humidifier is Aprilaire 700 Series and Furance is Armstrong A97USMV! furnace side: The wire connection as below: Is it compatible with 3rd generation nest? My guess wire connection as below: But still not sure: P1 - OB and P5 - * has been connected to the same wire!. The main reason is everything stops working. I have a Honeywell thermostat TH9421c1004 with 3 wires running to a EIM THM5421C and I want to install a new Honeywell RTH9585WF Thermostat. Replace Honeywell THM5421C with a new WiFi thermostat. 2 possible causes and potential solutions. Read honest and unbiased product reviews from our users. Here are the images of the Honeywell. Connect 1, 2, 3 terminals on thermostat to 1, 2, 3 terminals on EIM or Zone Panel; see EIM or. honeywell wifi thermostat. Honeywell THM5421R 1021 equipment interface module. I checked lots of things breakers, connections, relay on condenser etc. Honeywell IAQ troubleshooting. Product Description Warranty THM5421C1008 DISCONTINUED BY MANUFACTURER INTERFACE MODULE HUMIDITY CONTROL 4 HEAT / 2 COOL STAGES FACTORY WARRANTY MAY NOT APPLY. Operating Relative Humidity (Non-condensing): VisionPRO ® IAQ Thermostats: 5% to 90%. 4Connect each RedLINK accessory. Replace Honeywell THM5421C with Emerson Sensi I want to install an Emerson Sensi replacing a Honeywell THM5421C. Replace Honeywell THM5421C with Emerson Sensi I want to install an Emerson Sensi replacing a Honeywell THM5421C. com: Customer reviews: Honeywell THM5421C-1008 Interface Module. SKU OBS-67-THJ More Details This is an official Honeywell replacement part. I need to replace my honeywell thermostat model TH9421C1004, It has only three (3) wires connected to it numbered 1,2,3. Honeywell Humidifier Troubleshooting & Repair. Enter it here for your fast and easy solution: Need help finding your model number? or Let Us Diagnose The Problem Select “Common Problems” below and we’ll help you discover the cause of your problem. Turns out I have a Honeywell THM5421C EIM interface that will need to be bypassed if I want to do any sort of thermostat upgrade. I did the dumb thing of buying a Nest 3rd Gen Learning Thermostat without verifying how my current thermostat was installed. Summary of Contents for Honeywell TH9421C1004 Page 1 Page 2 Installation Guide Installer setup Inside 2 Press and hold for 5 seconds 1 Press SYSTEM Press DONE to save & exit 3 Change settings (see p. Would like wifi in replacement not critical and definitely like the blower kicking in on high when returning to cold house. Wireless Requirements: To enable the wireless capability, an (EIM) Equipment Interface Module (THM5421R1021) is required and sold separately. Honeywell TH8321WF1001 Touchscreen Thermostat WiFi Vision Pro 8000 with Stages Upto 3 Heat / 2 Cool 1,227 61 offers from $89. m trying to replace Honeywell thermostat with 3rd Gen I a. Honeywell TH9421C1004 Visionpro IAQ Thermostat Brand: Honeywell 37 ratings $59595 About this item Nullify Imported Advanced dual-fuel control. Not getting 24VAC to humidifier solenoid valve from Honeywell …. In your EIM is where you connect all the required 24v wires from the furnace. All 3 connect to a Honeywell TrolATemp Universal Minizone attached to a furnace. All 3 connect to a Honeywell TrolATemp Universal Minizone attached to a furnace. Replace Honeywell THM5421C with a new WiFi thermostat. 2 Connect gateway to internet and connect to power. OBSOLETE - REPL With TH8321R1001 + THM5421R1021. Product Description. THM5421C cannot be used with any other model of the thermostat. The 3 2 stage Vision Pro 8000s have R, W, Y, G, Y2, W2. The honeywell thm5421c is the interface for the honeywell VisionPRO IAQ. One of the sites listed the VisionPro 8000 as a replacement unit for less than have the price as the discontinued model. Can cause electrical shock or equipment damage. Read your car’s owner manual to determine the right replacement headlight bulb. Replace Honeywell THM5421C with Emerson Sensi. THM5421C is a 3-wire thermostat that is connected to the unit via the EIM. Parts & Accessories: C7089U1006 - Remote Outdoor Sensor C7189U1005 - Remote Indoor Sensor. Product Description Warranty THM5421C1008 DISCONTINUED BY MANUFACTURER INTERFACE MODULE HUMIDITY CONTROL 4 HEAT / 2 COOL. m trying to replace Honeywell thermostat with 3rd Gen Nest. The EIM is Honeywell THM5421R actual wiring before fix After fix according to OhighOent suggestion 2 Related Topics HVAC Skilled trades Careers 5 comments Add a Comment OhighOent • 1 yr. I need help with installation I need help programming my thermostat I want to replace or buy a new thermostat My. Not exactly sure of what this is equivalent to on new thermostat. We can see from your picture that the Y and C are connected to the EIM, which is probably and most likely coming from your furnace. The TH8321R1001 is a suggested replacement for YTH9421C1002. ago It looks like you only have 3 thermostat wires (W,R,B). nest 3rd generation compatibility with honeywell. Replace Honeywell THM5421C with a new WiFi thermostat. Voltage needs to be brought through them and they act as a switch. Therefore, it’s critical you know how to replace it immediately. Para hasta 4 sistemas de calefacción/2 de refrigeración con Honeywell THM5421C o equivalente. Thermostat Help & Support. The ENERGY STAR® certified smart thermostat lets you choose the temperature, schedule, display color and the devices you use to control it all.