1. share . Report Save. One frequent issue that people experience with their cooling systems is that the air conditioner turns … OneMissi. I took it the local RV place and they installed a White Rodgers 1C26. If you have an emergency heat setting, then just the heat strip comes on with the blower. The air conditioner is either a Duo Therm 39115 or 39045 under carriage. Normally AC usually will heat up after you turn it on, and the air conditioning cooling system was set the reduce the heat. When you turn on the heater it engages and dis-engages the air conditioner compressor in other words it clicks on and off and when it engages it makes the motor cut out bad and even when you turn on the air conditioner it makes the motor cut out. So you’ve turned on your heat and everything is running smoothly. You can google heat pumps and learn how they work. This should help block as much of the sun’s rays as possible. If you do, the following can happen. It still runs when I turn the system off... OK here is what I would do. Engine idles real low that stalls out when turning on air conditioner or heat . 4. Currently freezing my butt off in the trailer because I couldnt figure out how to run the heat without the ac on… thanks to this I fixed it. Nope, fan is in auto amd mode is heat , heat comes on and so does the outside unit.not a heat pump , also i am getting 22 v at C and Y …at C and W i am getting 24.7v … it should be a bad tstat..but when i jump off at board with tstat in off mode.Y to C , heat also comes on with out side unit. Hey guys, thought I'd give this community a shot before I call an HVAC guy out or return the unit. If Lo (LOW) or Hi (HIGH) is selected the air conditioner fan will continue to operate on the selected speed. Solution: Likely, your compressor is broken in some way! Determine which set of thermostat wires go from the air handler/furnace to the thermostat and which go from the air handler to the outdoor unit. It’s also a recipe for ballooning cooling costs, component damage, and premature system failure. As it gets colder, one of the common questions asked in forums is, “I turned my furnace on and the heat came on, but why did the air conditioner (A/C) also come on?”. Depending on indoor and outdoor conditions, this could mean that your system turns on and off every 5 to 10 minutes. Check out this article, on how to tell if your unit is a heat pump or air conditioner. This is for electric heat. . At All Systems Mechanical air conditioning and heating, we believe that the experience our clients have is every bit as important as the products they receive. As you can see there was the unused blue wire which I connected to the COM 24V terminal along with the red and black that are already there. Thank you yes that worked…… What a relief!!!! As it gets colder, one of the common questions asked in forums is, “I turned my furnace on and the heat came on, but why did the air conditioner (A/C) also come on?” The shortest answer is, your fan in the air conditioner is turned on, you have to turn it to “auto” so that it doesn’t come on. Thank you that was a great help. Took to shop; had throttle cleaned. Great…..Worked 1st time. When turned on A/C or defrost engine would stall & cut off. Comment removed by moderator 3 years ago. The heat is on, no errors on the thermostat, but again the outside AC unit is still running. Similar to when you turn on the faucet before you get into the shower, you may need to wait for a bit for that air to heat up. I have searched the … Thank you for the fix! This site uses Akismet to reduce spam. Press question mark to learn the rest of the keyboard shortcuts. Thank you!! Battery upgrade (to lithium)! THANKS was expecting it to be a costly problem to correct. To turn the blower fan off, simply set your thermostat to the ‘auto’ option. Your Fan Is On. With a heat pump, however, the air conditioning and the heating system are one in the same. I was hoping your recommendation would work but no such luck. Anyway, the setup behind the thermostat is Rc, G, Y1, W1, and now C. Here's a pic of the wires at the control board on the furnace: http://imgur.com/a/C8tyr. It is a Dometic but a different model. I’ve asked SEVERAL RV Dealers, and they had ZERO info on this! I am attaching a pic. Average Rating . If you haven't changed out your air filters, you may be breathing in mold and dust accumulated over time. Does the overcool feature (reduce humidity with air conditioner) work even when the heat is on? Solution: This is irritating! Recalibrate it according to the instructions in your owner's manual or replace the entire thermostat. If you only hear the noise when your unit turns on, the compressor motor is a likely culprit. Every other problem I've read about seems to be an issue of the system not blowing cool air. For a Dometic Single-Zone Thermostat, here’s how. A weak breaker, a faulty contactor, a grounded compressor, can easily cause it or since the condenser fan was shorted to the ground. If it’s extremely hot outside, your AC may be running longer or more often than usual to compensate for the temperature outside. It's the most likely reason your heat won't turn on. If the air needs cooling, the sensing bulb will signal the compressor. Report. Original Poster 3 years ago. That turns on when heat is called for. If everything appears normal, you can test the thermostat contacts … I also was going to take it in for service. The air conditioner seems to … If it WERE a heat pump, wouldn't it turn on and off as heat is needed? 2003 GMC Envoy 161,711 mi, Visitor. Trip planning apps and websites, Thousand Trails Orlando – camping near Disney, Dometic Single-Zone Thermostat User Manual. I turned off A/C or defrost, cranked & ran fine as long as both were off. The burning smell is one of the most commonly-experienced scents that can come from your AC. Air conditioner is turned off but fan keeps running. First check that the power source to your air conditioner unit is good, then try to turn the temperature control, which should trigger a light click noise. LearnToRV.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. 2004 Envoy.. Are you certain you don't have a heat pump? Thank you!!! Shorted wiring, faulty electronics in your furnace, or an electrical problem with your thermostat, for instance, could all explain the issue. Overnight Parking at Walmarts – good or bad idea? These are all you would need for this specific application. Just moved into a house with a gas furnace and central AC unit outside. Ecobee support was super helpful, but couldn't find a fix for my issue. Please let me know if there are other topics that I can help with! Do not connect any more wires. Trip Planning – How Far Can You Travel in a Day? If you have a heat pump this will not work. When the internal temperature sensor within the AC senses that the desired temperature has been reached, the compressor will switch off and only the fan will run. Thank you!!! However, if your AC is running continuously and never turning off, this isn’t normal and you likely have a problem with your air conditioner. I installed the thermostat originally with the PEK (eveything worked minus the outside unit running, by the way we have a furnace) because I didn't think I had a C wire, but after pulling some of the wires behind the thermostat I think I have one (it's blue).

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