Why does my AC have two thermostats?

A zoned system is simply a single air conditioning/heating unit that uses two thermostats and dampers within the actual duct work. Then, there are dampers in the duct work that open and close based on which thermostat is calling for air or heat.

What is a common problem with thermostat?

A faulty thermostat may be to blame if the air conditioner short cycles and runs almost nonstop, the living space seems warmer than your desired temperature setting, or you suddenly experience a cooling system failure.

Can 2 thermostats control one AC unit?

It is possible to install a single central air-conditioning unit, with two or more thermostats, that can cool the house equally. A zoned system includes dampers within the ductwork that open and close to regulate the flow of air and temperature in each zone.

How do dual thermostats work in a two story house?

The general rule of thumb for a two-story home is that you should set each thermostat two degrees Fahrenheit apart from the other. During the summer, when your AC is running, set the upper floor at the temperature you actually want in your home. Then set each floor underneath that to two degrees warmer.

How do I calibrate my AC thermostat?

How To Calibrate A Thermostat Properly: Expert Tips

Check The Thermostat’s Accuracy.
Gently Clean The Inside.
Straighten The Mercury Vial.
Or, Tighten The Calibration Screw.
Check All The Wiring Connections.
Re-Check The Temperature.
ABC Can Handle Your Thermostat Problems.

What to do if your thermostat is not connecting?

If you’re still having issues with a wire in your thermostat’s C connector, contact a local pro to diagnose your system and check that your C wire is installed correctly. See if there’s a C wire connected to your system’s board that you can connect to your thermostat.

When to clear code on comfort sync thermostat?

System will clear code when it detects condition has cleared. Critical. (Thermostat) The system has been cooling for at least 15 minutes, without a demand for cooling. Run the system in diagnostic mode and verify that it matches actual equipment operation.

What to do if your thermostat says Stat?

(Stat) The thermostat has found an unknown device on the system. An unknown device is seen on the subnet in or outside of configuration mode. Clear by reconfiguring the system. Press the setup tab, press start, and press confirm. If problem persists, then check all DEVICE connections to make sure they are icomfortcompatible.

Can a C wire be run from a thermostat?

It can provide power to your thermostat instead of a C wire. Typically, this is easier and less expensive to install than running a new C wire from your system to your thermostat. Your local pro may also be able to run a new wire from your system to your thermostat. Costs can vary depending on how difficult running the new wire will be.

Is there a problem with my air conditioner thermostat?

Any change in air conditioner performance is worrisome, but before calling a cooling expert, check the thermostat. Minor thermostat problems can mimic more serious issues with the HVAC system and directly impact cooling system performance and comfort.

What are the first signs of problems with a thermostat?

So, let’s quickly take a look at the problems and troubleshooting for a thermostat. First signs of problems with a thermostat include drop in performance of the temperature regulating system, and can make you feel too warm or too cold.

What causes an AC thermostat to be out of sync?

Another problem may be that the thermostat is not level, causing the temperature gauge inside to be misaligned. Use a level to check the alignment, and adjust it if it is out of sync. Dirt in the AC thermostat is one of the most common causes of problems, so a good troubleshooting method is to just clean the thermostat.

What are the problems with programmable thermostats?

These days, most A/C systems are equipped with programmable thermostats. The biggest problem in such devices is their RAM-like programming chips. These thermostat chips lose their programming whenever there is an abrupt power failure.