Thermostats can either run from a direct connection to the electrical system or from batteries. Remove the front plate of the thermostat from the wall to find the batteries and change them. Thermostat Batteries Died and Need to be Replaced. OK. I checked the fuse box and they weren't tripped. It usually happens when I'm watching/editing video, viewing video online.It happens other times when I'm just checking my email or something but usually it's watching video. You should also test your thermostat to ensure it’s working correctly. Problem was it started to blow hot air. Advantages of Trane Thermostats . My screen goes black and then comes back to the desktop or program that's opened. If the furnace turns on and runs smoothly, then you have a bad thermostat. Loss of Power to the Furnace. They offer both programmable and non-programmable thermostats. Make sure breakers and any service disconnects are turned on. If it still does the same short-cycling routine, then reinstall your existing thermostat wires and thermostat face plate – your thermostat is just fine. Went out, looked at the stat, blank, went down to the unit looked at the lights they were running normal. Watch Video. Adjust the temperature higher or lower to see if that has any effect on the length it stays on or its likelihood of shutting off. We went back to the thermostat and when we fiddled with it it went off but then came back on this time it blew cold air. In many cases, this can be fixed by having an HVAC professional calibrate the thermostat. It's pretty often we will set the A/C to 72 and come back and the thermostat is showing 68, and hasn't shut off yet. Heat turned on, AC did not. I have a new Trane heat pump that's about 6 months old, the first time we used to heat the 5 amp fuse blew. it would come back on and repeat roughly every 5 minutes. between W and C. 3) Unit running backwards– cooling on heat demand, heating on cool demand – the heat pump setting is wrong – go to setup step 3 and change the heat pump setting. If your thermostat is placed close to a heat source such as direct sunlight or a heat register, it will skew the temperature reading causing the thermostat to turn on and off irregularly. There is nothing on the screen. When set to either heat or cool, the thermostat will frequently not shut off the heat/air conditioning unit at the target temperature. In this example, we added the thermostat named "XL824" to the "Living Room" of the location named "My Home". Make sure that the wire coming out of the terminal is as flush as possible with the base. If the equipment is gas/electric, the stat will work without a common, but if it goes blank when starting the heat or cool, add the resistor (included with the thermostat) at the equipment side (not at the thermostat!) NOTE: the best way to touch the two wires together is with a … If your thermostat has a R and Rc, then there has to be a physical wire (jumper) connecting the R and Rc, along with the red wire going into the R slot. Your thermostat sensor is malfunctioning. We have to go turn the unit off, then back … This is another ‘silly’ thing that can cause your thermostat to go blank. To make the icing on the cake, Trane thermostats model have the support room-by-room zone heating systems. Tripped circuit breaker or blown fuse. Again, check for dirt and residue buildup. Many thermostats run on low voltage sent from the transformer on the HVAC system; if the transformer loses power, so will the thermostat. When the furnace turns on then off after a few minutes, you need to figure out the cause so that you can keep your home warm through the blustery winter temperatures. Chances are, the batteries have died and the thermostat simply can’t power on. I then realized this was an intermittent problem and had my service dispatch schedule me to go to this residence the following morning. A furnace that starts and shuts off over and over again is often described as short cycling. After the configuration is complete, the newly-added thermostat will now appear under Living Room. Leaky Refrigerant During hot weather, the refrigerant catches heat inside your home and sends it outside. Relocate thermostat or apply remote indoor temperature sensor. Make sure there is high voltage power to the furnace. If your thermostat is blank, the first thing you should do is check the batteries. Trane thermostats are covered by a limited five-year warranty. After only about a minute or so, the furnace will come back on and only stay on for about 30 seconds. Not all thermostats use batteries; many are wired into the electrical system of the house. Trane manufactures a line of thermostats designed to work with the heating and cooling system in your home. The fan control thermostat in the furnace is bad. Solution: Try replacing the batteries and restarting the thermostat. Check on the circuit breaker box and reset any switches that have tripped. I cant even get the fan to turn on in my house. Low voltage power for the thermostat and controls comes from the furnace. Turn your thermostat to "Cool" and "On" during the warmer months after a power outage. Turn off the power to their HVAC system and remove and reseat all of the wires. Put the door back on saw the lights on the board come on and left. In some cases, though, you might need to replace it. I didn't know this, as I inherited the thermostat from a friend. This is often the cause of many problems. This meant the short in the wires had come back. Testing your thermostat can involve handling live wires. The batteries in your thermostat can last as long as five years or as little as a few months – so if your thermostat is turned on but still blank, try swapping out the batteries. If the thermostat is blank or if your thermostat has batteries go to the furnace or the fan coil and unplug it for a few minutes and then plug it back in. 2) Cycles per hour or aggressive recovery is improperly set. This will reset your thermostat in the warmer months--during the winter months, you will need to follow a few more steps. The thermostats also come with either a 4.3-inch and 7-inch screens to enable you to read and set the accurate temperature. Hey all, My central air stopped working completely this evening (its less than a year old). After replacing the fuse the unit would run for 3 minutes then it would shut down and the screen on the thermostat would go blank. 1. Be sure the temperature setting is at least 5 degrees below the room temperature so the thermostat can call for cooling from your AC unit. The first possibility to look into when you find a blank thermostat screen is to check if the unit needs to have its batteries changed. Thermostat problems: First of all, check to see if your programmable thermostat is set to have the heat come on at the right time. The wiring could be old and need replacing, it might need new batteries, or it could be the location of your thermostat. If you notice your thermostat screen is blank or fading it may be low on batteries and losing power intermittently. Navigate back to the main screen by pressing the back (<) icon at the lower right repeatedly until you are back to the My Home screen. Try replacing the thermostat batteries and see if the display returns. ... My Trane thermostat (400 series) has gone blank. Since we have moved into our newly built house 4 years ago our the screen on our thermostat will go blank intermittently and then all the programming goes back to the default settings. In either case, you should have a professional assess the situation. We tried to take off the face of the thermostat to look for a battery as we were doing that the thermostat kicked on. 1) Seal all air leaks behind thermostat. 3. Check to see if the box is level. I checked the box (circuit box I think) by the AC unit and it didn't have any fuses. Step 5: Call An Service Provider If These Steps Didn’t Help You can adjust the temperature lower in order to jump-start the air-conditioning. Thermostats near heat sources or in direct sunlight can warm too quickly, signaling your furnace to shut off. Dead Batteries. Your thermostat itself might be to blame for reading the wrong temperature. Then the furnace will stay off until the thermostat calls for it to come back on and it will stay on until the desired temp. The first thing I did when I arrived back at the residence was to check the 3-amp low voltage fuse. 1. Most digital thermostats require batteries. I found it was “blown” (had electrically opened). 1) Check the location of the thermostat for drafts. Many furnaces can get into the habit of repeating this cycle over and over again. My thermostat went completely blank (it is not battery operated). I didn't read all the responses, but thought this would help. 2. I got a call the next day the lady didn't have any heat the display was blank, HW 8411 stat I think. This is a quick and easy fix that will make your temperature woes a thing of the past. It may be a combination fan/limit control. When we came home from the store the digital thermostat was blank. Broken or poorly placed thermostats can cause short cycling. If your thermostat is one of the latter, a blank screen probably means the batteries have gone dead. Replace the batteries and see if your thermostat … Step 1. I changed a filter that had to go in through the blower door. The thermostat needs new batteries Not all thermostats run off … Another possibility is faulty wiring between your thermostat and heat pump. Get a new one and replace it. If you confirm that your thermostat is indeed on but it’s still blank, try the following troubleshooting tips. After you’ve waited the alloted time, turn the thermostat back to “cool,” and it should kick your air conditioning back on. is met and the whole process starts over, please help. Thermostat Malfunctions . Heating or cooling room thermostat diagnosis: how to troubleshoot a heating or cooling room thermostat that is not working at all or is not working properly. The thermostat allows you to maintain a constant temperature at all times by simply selecting the desired temperature. 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