PRO T755 Thermostat Troubleshooting
The PRO T755 thermostat does its job. However, like any electronic device, it may sometimes malfunction, and you’ll need to troubleshoot it to get it to work again.
If you’re currently having some issues with your PRO T755 Thermostat, keep reading.
In this post, I’ve covered some common PRO T755 thermostat problems and how to fix them.
Thermostat Not Turning On
If your PRO1 T755 thermostat is not turning on at all, here are some troubleshooting steps to try:
Check the Batteries:
The first thing to check is the batteries. The PRO T755 thermostat requires two AA batteries to function. Make sure they are properly installed and have enough charge.
If the batteries are low or dead, replace them with fresh ones and see if the thermostat turns on.
Check the Circuit Breaker:
If the batteries are fine, the next thing to check is the circuit breaker. Make sure the circuit breaker for your HVAC system is turned on. If it has tripped, turn it back on and see if the thermostat turns on.
You can find the circuit breaker switch for your thermostat in your home’s circuit breaker box. Look for the switch labeled HVAC or AC.
If you find that the circuit breaker isn’t tripped, switch it off yourself and turn it back on.
Check the Wiring:
If the batteries and circuit breaker are both fine, there may be an issue with the wiring.
Check the wiring behind the thermostat to make sure everything is securely connected, and there are no obvious signs of damage.
If you’re not comfortable working with electrical wiring, it’s best to hire a professional to do this for you.
Replace the Thermostat:
If none of these solutions work, it may be time to replace the thermostat. Over time, thermostats can wear out and stop functioning properly.
If your thermostat is old or has been having issues for a while, replacing it may be the best option.
Incorrect Temperature Readings
If your PRO1 T755 thermostat is giving you an incorrect temperature reading, here are a few different things you can do to fix this issue:
Calibrate the Thermostat:
The first thing you should do if you’re experiencing incorrect temperature readings is to check the thermostat’s calibration.
Calibration is the process of adjusting the temperature reading so that it matches the actual temperature in the room.
Follow the steps below to calibrate your thermostat:
- Remove the thermostat from the wall by gently pulling it away from the mounting plate.
- On the back of the thermostat, you will see a small switch or button labeled “Calibrate” or “Adjust.” Use a small screwdriver or a similar tool to move the switch or press the button.
- After you have activated the calibration feature, the thermostat should enter calibration mode. This may take a few seconds.
- Once the thermostat is in calibration mode, you can adjust the temperature reading up or down as needed.
- Use the up or down arrows on the thermostat to adjust the reading to a few degrees.
- Once you have adjusted the temperature reading, wait a few minutes to see if the thermostat adjusts the heating or cooling output accordingly.
- If the temperature still seems off, you can repeat the calibration process until you achieve the desired results.
- Once you have completed the calibration process, re-mount the thermostat on the wall by sliding it back onto the mounting plate.
If this calibration process doesn’t work for you, refer to your thermostat user guide. And if the incorrect temperature issue persists, continue to the next step.
Thermostat Placement:
The location of your thermostat can also affect its ability to read the temperature accurately. If your thermostat is placed in direct sunlight or near a draft, it may give you an incorrect temperature reading.
Make sure your thermostat is installed in a neutral location away from direct sunlight or drafts. This will help ensure that the thermostat is reading the temperature accurately.
Sensor Issues:
If your thermostat is still giving you an incorrect temperature reading after calibrating it and checking its placement, it’s possible that there is an issue with the thermostat’s sensor.
The sensor is the component of the thermostat that measures the temperature in the room. If the sensor is not working properly, it can give you an incorrect reading.
If this is the case, you may need to have the thermostat professionally repaired or replaced.
Wiring Issues:
Another possible cause of incorrect temperature readings is wiring issues. If the wiring is loose, damaged, or incorrectly installed, it can cause the thermostat to give incorrect readings.
Check the wiring behind the thermostat to make sure everything is properly connected, and there are no signs of damage.
If you’re not comfortable working with electrical wiring, hire a professional to do this for you.
So, these are some steps you can take to fix incorrect temperature readings. If none of these solutions work, it may be time to have the thermostat professionally repaired or replaced.
AC or Heat Not Turning On
If your PRO T755 thermostat is not turning on your air conditioning or heating system, here are a few things you can check to troubleshoot the issue:
Check the Thermostat Settings:
The first thing to check is the thermostat settings. Make sure the thermostat is set to the correct mode (cooling or heating) and that the temperature setting is lower or higher than the current temperature in the room, depending on whether you want to turn on the air conditioning or heating.
If the thermostat is set correctly and the system is still not turning on, move on to the next step.
Check the Circuit Breaker:
The next thing to check is the circuit breaker. Make sure the circuit breaker for your HVAC system is turned on and hasn’t tripped. If it has, turn it back on and see if the system turns on.
Check the Air Filter:
If the circuit breaker is fine, the next thing to check is the air filter. A dirty or clogged air filter can cause your HVAC system to not work properly. Check the air filter and replace it if it is dirty or clogged.
Check the Wiring:
If the air filter is fine, the next thing to check is the wiring.
Check the wiring behind the thermostat and at the HVAC system to make sure everything is securely connected and there are no obvious signs of damage.
You should hire a professional to help you handle this if you’re not comfortable working with electrical wiring.
Check the HVAC System:
If everything else is fine, the issue may be with the HVAC system itself. Check the unit to see if there are any signs of damage.
If you’re not comfortable doing this, hire a professional to inspect and repair the system.
Thermostat Screen is Blank
If the screen on your PRO T755 thermostat is blank, it means the thermostat is not receiving any power. Here are some things you can check to troubleshoot the issue:
Check the Batteries:
The PRO T755 thermostat requires two AA batteries to function. Make sure they are properly installed and have enough charge.
If the batteries are low or dead, replace them with fresh ones and see if the thermostat turns on.
Check the Wiring:
If the batteries are fine, the next thing to check is the wiring. Check the wiring behind the thermostat to make sure everything is securely connected, and there are no obvious signs of damage.
Check the Circuit Breaker:
If the batteries and wiring are fine, check the circuit breaker. Make sure the circuit breaker for your HVAC system is turned on and hasn’t tripped. If it has, turn it back on and see if the thermostat turns on.
Reset the Thermostat:
If none of the above solutions work, you can try resetting the thermostat.
To reset your PRO T755 thermostat, remove the thermostat from the wall and remove the batteries. Then wait a few minutes before reinserting the batteries and reattaching the thermostat to the wall.
Replace the Thermostat:
If none of these fixes works, it may be time to replace the thermostat. You may also want to contact PRO1 customer support and report the issue before considering getting a replacement.
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Final Thoughts
The PRO1 T755 thermostat is a reliable and easy-to-use device, but it can malfunction from time to time.
If you experience any issues with your PRO T755 thermostat, follow the tips discussed above to identify and fix them.
If you’re still experiencing issues, contact a professional HVAC technician for further assistance.