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The thermostat is the eyes, nose, and ears of the HVAC unit. It is the component of the system which measures indoor temperatures and activates, or deactivates, the HVAC system. If the thermostat is not working, however, then how will it properly read the temperature and send signals to the rest of the system? Regularly testing your thermostat is crucial if you want to enjoy comfortable temperatures indoors. In this article brought to you by Rooter Hero, we will go over some methods for testing your thermostat. If you find an issue or want to leave the testing to a qualified technician, then call Rooter Hero – your local HVAC company. Our live representatives are on standby to take your call and schedule an appointment or arrange an urgent dispatch.
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We recommend that you periodically test your thermostat, but you should also understand the signs that indicate your thermostat is bad so that you can perform ad hoc tests. Here are some warning signs to look out for:
If you have noticed any of the aforementioned issues, then you likely have a faulty thermostat. Still, it is worth testing the thermostat.
First, let’s make sure the thermostat is responsive. Turn up the thermostat to the highest, or lowest, setting. This should activate the AC or heater. If not, then your thermostat might be unresponsive. Sometimes, simply toggling the respective circuit breaker or changing the batteries can fix an unresponsive thermostat. What about testing faulty thermostats?
Another easy test is with an indoor thermometer. Turn on your air conditioner or heater. Read the indoor thermometer then set the HVAC’s thermostat to a level different from the thermometer’s reading. Wait about an hour and read the thermometer again. The reading on the thermometer should match the setting on the thermostat. If not, then you might have a faulty thermostat.
For more technical testing, you should grab a multimeter. Turn the dial to 24 volts AC and touch one of the meter’s probes to the R terminal and the other probe to the G, W, or Y terminal. The reading on the multimeter should show something between 22 and 26 volts. If it is reading zero, then your thermostat is not getting power.
Sometimes changing the battery or switching the thermostat off and on again will fix the issue. Other times, electrical and technical issues call for a repair or replacement. If you need HVAC repair or replacements, then call Rooter Hero to hire one of our AC contractors in El Cajon, CA. We are happy to schedule an appointment or arrange an emergency repair.