Nest thermostat rc or rh

What is Rh percentage thermostat? Relative Humidity Control The Relative Humidity (RH) measurement is the level of moisture in the air. During the winter, RH levels indoors should be 40 percent or lower, while it can rise to over 60 percent in the warmer months. Your home's relative humidity is impacted by your HVAC system and thermostat settings.Log In My Account eu. zt; vx"RC" and "RH" are terminals on an HVAC thermostat, each with a specific function. They are used with HVAC systems with two separate transformers - one for cooling and one for heating. The RC terminal supplies the 24-volt cooling power, and the RH terminal is the 24-volt heating power supply. used uhaul trucks for sale 28 thg 10, 2022 ... If you're using the latest nest thermostat devices, you must know that it includes different RH and RC wires. On the contrary, even there ...Nest Thermostats - Stay Comfortable and Save Energy - Google Store Skip Navigation Free shipping. Simple returns. Holiday shopping has never been easier. Shop now. sleeve tattoo ideas for men Nest Thermostat owners now say that they are getting Error N72 with a message that reads “Power wire Rh detected. No connection to equipment.” User reports indicate that the issue persists on both existing and newly installed Thermostats, indicating that the hardware is not at fault as one would expect.The Best Wiring Diagram For Nest Thermostats Wireless Home Kits References. Web below are lists of the top 10 contributors to committees that have raised at least $1,000,000 and are primarily formed to support or oppose a state ballot measure or a candidate for state office in the november 2022 general election. Web microsoft has … pn management online practice 2020 a Take out the float switch and move the float to the bottom. Wait for few seconds and check the RH wire status on the Nest Thermostat display. If this fixed the …"RC" and "RH" are terminals on an HVAC thermostat, each with a specific function. They are used with HVAC systems with two separate transformers - one for cooling and one for heating. The RC terminal supplies the 24-volt cooling power, and the RH terminal is the 24-volt heating power supply. sequoia one worklife portal+21 Nest Thermostat Wiring Diagram For Gas Furnace And Air Conditioner Youtube Video Ideas. You will typically find 18/5, 18/6,. Turn off power you have to first turn off the furnace power from the main panel. ... If you have an r, rc or rh wire, you can put it into the r. In case there’s a surface wire, it will be a water piping wire held in ... apply for petco credit card Nest Thermostat Wiring for Baseboard Heaters 1 Nest thermostat not turning on heat 1 Add-A-Wire - COMMON / C Wire to a 3 Wire Thermostat 2 Nest E Thermostat Power 1 What terminal to use on AC for C wire / nest dual transformer install 1 Connect separate Heat / AC systems to a Nest E 2 HVAC: adding a C wire for Nest thermostat 1If you only have one R wire (no Rh or Rc), you can connect your R wire to either Rc or Rh on the Nest thermostat. Note: Don't connect any Jumper wires to the Nest thermostat. Rh: If you don’t have an Rc wire, the Rh wire is the power wire for both your heating and cooling systems. 5 wire thermostat is basically a 4 wire thermostat with a “C” or “Common” wire. The newer digital thermostats for HVAC devices all require a 24V C wire connection to function. 5 wire thermostats are the most versatile thermostat; they control anything from smart air conditioners, heat pumps, furnaces, and so on.Even though most of the thermostats like Nest can get enough power from the heating wires (Rh or Rc), Wyze is not quite the same. Since there is no internal battery we may need to use a C wire adapter to power up the unit. Anyway, follow the instructions from the Wyze app upfront. Wyze Thermostat C Wire AdapterNest Thermostat Wiring for Baseboard Heaters 1 Nest thermostat not turning on heat 1 Add-A-Wire - COMMON / C Wire to a 3 Wire Thermostat 2 Nest E Thermostat Power 1 What terminal to use on AC for C wire / nest dual transformer install 1 Connect separate Heat / AC systems to a Nest E 2 HVAC: adding a C wire for Nest thermostat 1Separate Rc and Rh are from when the cooling and heating systems were completely different (and had different transformers/etc operating them). For example, if you had central A/C with ducts but separate radiators for heat and the systems never touched each other. 2022 va disability pay dates Browse conditions and diseases starting with the letters 'Rh'. List of medical conditions and diseases starting with the letters "Rh". The easiest way to lookup drug information, identify pills, check interactions and set up your own person...Nest Learning Thermostat Pro Installation Configuration Guide Pdf Free Nest No Power To Rh Or Rc Wire Detected Infosec Monkey Installing The Thermostat Wire Adapter Customer Support Nest Learning Thermostat 2nd Generation Base Motherboard Replacement Ifixit Repair Guide Nest Thermostat No Power To Rc Wire How Troubleshoot Robot Powered HomeRC: The RC terminal is the 24-volt cooling power supply. RH: The RH terminal is the 24-volt heating power supply. ( Note: The RC and RH terminals are jumpered together in a four-wire heat/cool system and a single-stage heat pump system but not in a five-wire heating/cooling system.) Y/O: The Y/O terminal is used to control the cooling condenser. consolo wellsky The Nest Thermostat separates the Rc and Rh wires. However, in some cases, you may only have one wire. This wire should go to the Rh port. If you are still getting a no power alert, try putting the red wire into the Rc port. Blown fuse in the air handler. Check if you have blown a fuse. If you do, replace it and see if your system is on. 3. maria orschitsch Nest thermostat installation 2 wire. 10 Images about I have a honeywell PC8900 installed at home, the thermostat for the : Yet another Nest install nightmare! — Heating Help: The Wall, Two Stage Thermostat Wiring - Goodman Heat Pump and Nest / These and also Nest Wiring Diagram 6 Wire | Nest Wiring Diagram.Answer (1 of 4): * Unlike most thermostats, the Google Nest thermostats do not use jumper wires. * If your current thermostat has jumper wires, do not connect them to your … does dollar general sell iphone chargers Nest Thermostat E74 / E73 Error Fix - RH wire not detected Weavers Way 181 subscribers 128K views 4 years ago If you are getting an E73 / 74 error message on your Nest thermostat, which...Honeywell Wifi Smart Thermostat Wiring Diagram Wiring Diagram from wiringdiagram.2bitboer.com. Wall plates can be mounted to a standard electrical box (2 or 4) and come in either white or black. Tap add product on the home screen and follow the app instructions.; If you don’t have other products in the app. Source: tx028c s remote There are several ways to identify your thermostat wires: Take a picture of your current thermostat's wiring Always take a picture of your current thermostat's wires before you remove it from...Most Nest thermostats are set up so that only one wire needs to connect to the Rh and Rc slots. There is typically a “jumper wire” connecting the Rc slot to the Rh slot. If this is the …aaronw22 • 2 yr. ago. Separate Rc and Rh are from when the cooling and heating systems were completely different (and had different transformers/etc operating them). For example, if you had central A/C with ducts but separate radiators for heat and the systems never touched each other. In your case you just have a unified system since you ...What is Rh percentage thermostat? Relative Humidity Control The Relative Humidity (RH) measurement is the level of moisture in the air. During the winter, RH levels indoors should be 40 percent or lower, while it can rise to over 60 percent in the warmer months. Your home's relative humidity is impacted by your HVAC system and thermostat settings. metropcs hotspots Apr 30, 2022 · The Rc and Rh wires are only used if you have a separate heating and cooling system. Most systems are combined and that's why there is a jumper between the Rc and Rh terminal at the thermostat. The Google Home App during set up for the Google Nest thermostat will ask you to select which wires you have. The options are R, Rc, and Rh. 27 thg 6, 2019 ... If you're replacing your thermostat, you might notice the wires are ... R, Rh, Rc: Your system may have just an R wire, an Rh and an Rc wire ... spokechoice app The RC wire, on the other hand, refers to “red cooling”. It’s the same with the RH wire in that it powers the thermostat. For the RC, it powers the cooling system. …Remove the Nest thermostat from your wall. Remove the Red (Rc or Rh) and White (W1) from the thermostat. Connect the Red and White wires together (twisting, alligator clips, or whatever you’ve got to move those electrons). Turn power back on to your furnace. A thermostat is basically a programmable switch.Nest Thermostat Rc Vs Rh. The Nest Thermostat RC is a remote-controlled thermostat, while the Nest Thermostat RH is a heating, air conditioning and refrigeration unit. Both of these devices have the same features as far as functionality is concerned - they both have a remote control feature and are equally good for high rise buildings. ...What is RC or RH on a thermostat? RC: The RC terminal is the 24-volt cooling power supply. RH: The RH terminal is the 24-volt heating power supply. (Note: The RC and RH terminals are jumpered together in a four-wire heat/cool system and a single-stage heat pump system but not in a five-wire heating/cooling system.) Why is there a jumper between ... roblox tiktok filter There are several ways to identify your thermostat wires: Take a picture of your current thermostat's wiring Always take a picture of your current thermostat's wires before you remove it from...RH , W and C of the Nest would be powered by the zone relay, like a Taco SR501 . R , G and Y would be connected to the AC equipment. Have a job where theres one unused wire from the thermostat to the boiler. No extra wire to the air handler and no wire connected to C of the current thermostat. Welcome It looks like you're new here. RH , W and C of the Nest would be powered by the zone relay, like a Taco SR501 . R , G and Y would be connected to the AC equipment. Have a job where theres one unused wire from the thermostat to the boiler. No extra wire to the air handler and no wire connected to C of the current thermostat. Welcome It looks like you're new here. Unfortunately a two transformer system will have separate Rc and Rh wires along with two C wires back at the two separate relay or control boards (A/C and boiler). "If you have >1 R wire, then R (or Rh) goes to R and Rc goes to Rc." That's not my question. I need to know which of the two C wires to route to the thermostat. honeywell total comfort connect Web nest thermostat wiring diagram heat pump. Source: www.doityourself.com. The nest thermostat works great with a. Web photo guide to installing a nest thermostat how install wire adjust program or repair thermostats what know about color codes syston cable system is on star connector. Source: …Nest thermostat installation 2 wire. 10 Images about I have a honeywell PC8900 installed at home, the thermostat for the : Yet another Nest install nightmare! — Heating Help: The Wall, Two Stage Thermostat Wiring - Goodman Heat Pump and Nest / These and also Nest Wiring Diagram 6 Wire | Nest Wiring Diagram.The Nest Thermostat E works with 85% of 24V heating and cooling systems, including gas, electric, forced air, heat pump, radiant, oil, hot water, solar and geothermal. Heating and Cooling: 1 stage of heating (W1) and cooling (Y1) and a second stage of either heating (W2) or cooling (Y2). Heat pump: with auxiliary and emergency heat (O/B, AUX) office equipment near me Google Nest Thermostats Compatibility Google Nest Compatibility Checker Use to determine if a Nest thermostat is compatible with your heating and cooling system ...9 thg 9, 2019 ... As the Nest website says in part: "Instead of using jumper wires, Nest Learning Thermostats use an internal jumper between the Rh and Rc ... ups delivery times in my area 24 thg 9, 2022 ... Why does the thermostat have a jumper wire? What does it do? When to leave that jumper in there, when to take it out and when it doesn't ... photographer job near me 17 thg 4, 2013 ... Rh or Rc in single transformer systems; no jumper wire required. For du nsformer and Rc for the cooling transformer. st will not be able to ...An R wire can go into a Nest Learning Thermostat's Rc or Rh connector. The Nest Thermostat E only has an R connector, which is typically where an R wire would go. If you have separate... 24 thg 2, 2022 ... It depends on what you're intending to use. The heating unit is designated by RH, whereas the air conditioning unit is designated by RC.What are ”RC” and “RH” and what are the differences between the two? “RC” and “RH” are terminals on an HVAC thermostat, each with a specific function. They are … walmart pharmacy price list 2022 We have a Nest Learning Thermostat 3rs generation. Occasionally, say maybe once a week or so, the T-stat will continue to run the fan after the furnace has turned off. This causes the home to circulate the cold air from the basement, rapidly bringing down the temperature. The fan will continue to run even if I pull the T-stat from the wall ...Nest Learning Thermostat Pro Installation Configuration Guide Pdf Free. Nest No Power To Rh Or Rc Wire Detected Infosec Monkey. Installing The Thermostat Wire Adapter Customer Support. Nest Learning Thermostat 2nd Generation Base Motherboard Replacement Ifixit Repair Guide. Nest Thermostat No Power To Rc Wire How Troubleshoot Robot Powered Home.2 brand new Google Nest Thermostat E $140 each. Shipping available Mgf specs It's easy to save energy with the Nest Thermostat E. Its simple design and new frosted display blend into the background. With proven energy-saving features, the Nest Thermostat E can help you save from day one.Easily fix the NEST THERMOSTAT E74 error which refers to the RC or RH wire connection to power. Replace the fuse on the furnace. Watch. AboutPressCopyrightContact... urgent care hoadly road The Nest 3rd Gen thermostat has 10 terminals, say Rh, Rc, W1, W2 (aux) Y1, Y2, O/B, G, C, etc. You just need to connect ‘red’ wire from the furnace to Rh and ‘white’ wire to W1. These 2 connections will set the Nest thermostat as a ‘smart 2 wire thermostat’ taking care of your home heating ‘smartly’.Google Nest Learning Thermostat is compatible with 95 percent of 24-volt heating & cooling systems new and old - gas, oil, electric, forced air, heat pump, and radiant. Google Nest works with: Heating: 1, 2 and 3 stages (W1, W2, W3 wires) Cooling: 1 and 2 stages (Y1, Y2) Heat Pump: with auxiliary and emergency heat (O/B, AUX, E) Fan (G) Power ... ally bank savings rate tiers Wait for few seconds and check the RH wire status on the Nest Thermostat display. If this fixed the issue, you have to drain out all water from the AC unite water collecting pan and make sure no block in …The Nest 3rd Gen thermostat has 10 terminals, say Rh, Rc, W1, W2(aux) Y1, Y2, O/B, G, C, etc. You just need to connect ‘red’ wire from the furnace to Rh and ‘white’ wire to W1. These 2 connections will set the Nest thermostat as a ‘smart 2 wire thermostat’ taking care of your home heating ‘smartly’.An r wire can be plugged into the rc or rh connector on a nest learning thermostat. Typically, the wires that give the power supply (usually termed as the ‘hot’ … craigslist locksmith Connect one end to RC and the other end to RH on the wall plate. Leave the wire that comes out of the wall attached to either RC or RH. See below for the RH/RC jumper wire locations on each thermostat model. Sensi smart thermostat The RH/RC jumper wire is located on the back of the thermostat face plate. Sensi Touch Smart Thermostat27 thg 6, 2019 ... If you're replacing your thermostat, you might notice the wires are ... R, Rh, Rc: Your system may have just an R wire, an Rh and an Rc wire ...You can send a picture but if the Thermostat is not powered on, you should verify the voltage level between terminals RC and C Ask Your Own Consumer Electronics Question Customer reply replied 1 day agoThermostats contain two sections, heating and cooling, determining when to turn on cool air and when to turn on warm air. All combined air conditioning and heating thermostats have RC and RH wiring. RC Despite the many letters used to denote terminal connections and wiring most, if not all, are actually fairly logical. amazon jax2I’m installing a Nest Thermostat for my HVAC system. I have two red wires coming from the system. One is connected to R (heat) and the other RC (cooling) on the old thermostat. The Nest thermostat only has a connection for R . How do I connect the RC wire. Thanks Labels: iOS Nest Thermostat Wiring & System Compatibility 0 Kudos Share Reply20 thg 5, 2022 ... How do you fix this e74 error on your Nest thermostat? What's the reason for this Rh Wire power loss error? We will see in detail.I'm installing a Nest Thermostat for my HVAC system. I have two red wires coming from the system. One is connected to R (heat) and the other RC (cooling) on the old thermostat. The Nest thermostat only has a connection for R . How do I connect the RC wire. Thanks Labels: iOS Nest Thermostat Wiring & System Compatibility 0 Kudos Share Reply plumbing company near me I'm installing a Nest Thermostat for my HVAC system. I have two red wires coming from the system. One is connected to R (heat) and the other RC (cooling) on the old thermostat. The Nest thermostat only has a connection for R . How do I connect the RC wire. Thanks Labels: iOS Nest Thermostat Wiring & System Compatibility 0 Kudos Share Reply coupons for hobby lobby printable Instead of using jumper wires, Nest Learning Thermostats use an internal jumper between the Rh and Rc connectors. A Nest Learning Thermostat will automatically use this internal jumper if your system needs it. What is RC and RH on Nest? If you don’t have an Rc wire, the Rh wire is the power wire for both your heating and cooling systems.There are several ways to identify your thermostat wires: Take a picture of your current thermostat’s wiring Always take a picture of your current thermostat’s wires before you remove it from... www.styleschecks.com coupon code Google Nest Learning Thermostat hỗ trợ các hệ thống điều hòa tổng, ... Power 24V AC Rh, or Rc); Google Nest Learning Thermostat được thiết kế để hoạt động ...Apr 30, 2022 · The Rc and Rh wires are only used if you have a separate heating and cooling system. Most systems are combined and that's why there is a jumper between the Rc and Rh terminal at the thermostat. The Google Home App during set up for the Google Nest thermostat will ask you to select which wires you have. The options are R, Rc, and Rh. If your thermostat is dedicated to air conditioning only, it will have a red Rc wire. For heating and cooling systems, it will have a red Rc and a red Rh wire. Though both wires are red, they are not interchangeable. For the thermostat to work properly, the red wires must be connected to the correct corresponding terminal.The Nest requires 24 volt A/C power to operate. This is provided through the R wire and the C wire (common). Some systems have separate power sources for heating and cooling. That is why some thermostats (including the Nest) have both an Rh and a Rc terminal. Rh is power for the heating system, and Rc is power for the cooling system. sea moss transformation promo code Instead of using jumper wires, Nest Learning Thermostats use an internal jumper between the Rh and Rc connectors. A Nest Learning Thermostat will automatically use this internal jumper if your system needs it. What is RC and RH on Nest? If you don’t have an Rc wire, the Rh wire is the power wire for both your heating and cooling systems.A mechanical thermostat doesn't mind much but an electronic one can burn out with long term use. When you have two transformers and connect the Rs you get either 0v or 48v at the other connections - it either doubles or cancels out the standard 24vac. Get a multi-meter and measure before hooking up a Nest E. If 48v then need to swap some wires. black bag hot cheetos The programmable thermostat gives you the freedom to program your weekday and weekend schedules independently. Separate programs for the weekdays and weekends with 4 program periods per day including wake, leave, return and sleep. for use with central Gas, Oil, or electric furnaces, millivolt systems (compatible with 85% of systems )Use the Thermostat Compatibility Checker to see if an ecobee thermostat will work with your system. Common thermostat wires: Less common thermostat wires: When installing an ecobee thermostat, any unnecessary or spare wires can be safely taped off or wrapped around the wiring bundle and tucked back into the wall. Incompatible thermostat wires: enterprise carlsbad nm My nest is giving me a E72 wiring report says no power wires detected. Rh or rc wires reuired. Not even a year. Just Ask an Expert Home Improvement Questions HVAC Questions HishamA1119, HVAC Technician Satisfied Customers Related HVAC Questions … airheatman … airheatman My wife did not like our nest thermostat so I removed the Answer (1 of 4): * Unlike most thermostats, the Google Nest thermostats do not use jumper wires. * If your current thermostat has jumper wires, do not connect them to your Nest thermostat.Effectively there isn't a second RH wire, although there is an RH terminal. However, the heating still needs to be controlled, so a wire known as a jumper is connected between … fuelman fuel card Log In My Account ab. nj; osIf you have an r, rc or rh wire, you can put it into the r. In case there’s a surface wire, it will be a water piping wire held in place by a attach on the same side since the fairly neutral terminal. Nest Thermostat Installation & Wiring Steps Turn Power Off Remove Old Thermostat's Cover Check Thermostat Wiring For High Voltage Remove. 60 x 80 french doors exterior Answer (1 of 4): * Unlike most thermostats, the Google Nest thermostats do not use jumper wires. * If your current thermostat has jumper wires, do not connect them to your Nest thermostat.RH is for the heating unit and RC is for the A/C unit. There will usually be two thermostat cables – don’t mix them up. If the air conditioning thermostat has one transformer to power both the heating and cooling system, then the wire from the transformer goes directly to the RC terminal and is called the RC wire.Nest Thermostats - Stay Comfortable and Save Energy - Google Store Skip Navigation Free shipping. Simple returns. Holiday shopping has never been easier. Shop now.Take your 24v transformer put one wire in Rh the other in C. Connect a 2nd wire to C and run that to one terminal on the power side of the relay, connect a wire to W1 on the thermostat and run that to the other terminal on the power side of your relay… Then connect the two wires you set aside to the normally open side of your relay. humane society shelby township Nest Thermostat No Power to RH Wire. If your Nest thermostat does not detect power to Rh wire, or it can't detect the wires in your thermostat, there could be an issue with your system power or the thermostat wires. ... RC or Rh wire required. E3, E23 and E73- No power to Rc wire detected. E4, E24 and E74- No power to Rh wire detected. E5 ...Here’s everything you need to know about how to set up your Google. In October 2020 , Google Nest launched a new version of Nest Thermostat. nest disconnected from wifi, battery low wires connected: blue-y1; green-g; red-Rc; read more. Nest app Open the Nest app tap Settings. Some Nest thermostats can no longer connect to the internet, so …The Rc stands for red cooling. Comparing the Rh wire, it activates the thermostat but supplies the cooling system. So, for its connection, if you have all three wires, such as Rh, Rc, and R, you need to connect the Rc wire to the Nest thermostat R's connector. What is Rh on the thermostat? The Rh stands for red heating.Rc wires connect to the RC terminals on your thermostat. The Rh Wire The Rh wire on your thermostat connects to your heating system as opposed to your cooling system.However, if you have a dual transformer setup, this wire may just be labeled as 'R' without an 'h' included. The Rh wire connects to the RH terminal on your thermostat. chase bank or atm near me 27 thg 6, 2019 ... If you're replacing your thermostat, you might notice the wires are ... R, Rh, Rc: Your system may have just an R wire, an Rh and an Rc wire ...Nov 25, 2022 · The Nest thermostat battery is charged directly from your HVAC system via the Rh and/or Rc wires. A C-wire or common wire is also used as a neutral to complete the circuit. The wires provide a continuous flow of power. This helps maintain power to the thermostat, even if your HVAC system is off for a prolonged period of time. 5 wire thermostat is basically a 4 wire thermostat with a “C” or “Common” wire. The newer digital thermostats for HVAC devices all require a 24V C wire connection to function. 5 wire thermostats are the most versatile thermostat; they control anything from smart air conditioners, heat pumps, furnaces, and so on. buddy's u pull springfield missouri You will typically find 18/5, 18/6, or 18/8 on the label. Web famous wiring diagram for nest thermostat with heat pump power consumption control ideas. Source: wiringdiagramall.blogspot.com. Remove the motherboard of the old 2 wire thermostat and put the new 2 wire thermostat in its place. Ok google make this nest hack a …Nest Learning Thermostat Pro Installation Configuration Guide Pdf Free. Nest No Power To Rh Or Rc Wire Detected Infosec Monkey. Installing The Thermostat Wire Adapter Customer Support. Nest Learning Thermostat 2nd Generation Base Motherboard Replacement Ifixit Repair Guide. Nest Thermostat No Power To Rc Wire How Troubleshoot Robot Powered Home. home rent by owner Dec 11, 2021 · Unfortunately a two transformer system will have separate Rc and Rh wires along with two C wires back at the two separate relay or control boards (A/C and boiler). "If you have >1 R wire, then R (or Rh) goes to R and Rc goes to Rc." That's not my question. I need to know which of the two C wires to route to the thermostat. 14 thg 10, 2022 ... Mislabelled Thermostat Wires · Tripped Circuit Breaker · RC, RH Wiring Issue · Blown Fuse Inside Air Handler · Additional Troubleshooting Ideas. open scan and go Jan 24, 2022 · The basement thermostat (zone 2) is heat-only (Red connected to RH and White Connected to W wires. There's a small jumper wire between RH and RC). Current Thermostat is a RITEMP Model 8022C. For a replacement I purchased a Google Nest Thermostat (Snow model). Is it possible to use this Thermostat in the basement with this configuration (heat only)? Tap on the E74 Error: RH wire no power code that appears on the monitor. You will then be sent to the diagram’s “Tech Info” page. To check for loose wire …Rh stands for Red-Heat and Rc stands for Red-Cool. If you only have a single red wire the jumper between Rh and Rc are required for some heating and cooling hybrid systems depending on your thermostat. What color wires go on a Nest thermostat? Quote from the video: Quote from Youtube video: The Y wire is yellow.Feb 2, 2023 · I see rh and rc Can I tell by where wires are allocated? SHOULD I send a picture? Electronics Technician: SebastienT You can send a picture but if the Thermostat is not powered on, you should verify the voltage level between terminals RC and C Ask Your Own Consumer Electronics Question I may have a meter somewhere but will have to hunt. countyline 40 ton log splitter parts