Pro1 Thermostat T705 Not Working: How to fix

Pro1 T705 Thermostat is an impressive thermostat that you can consider for your home, and however sometimes, you might face some issues which might cause Pro1 Thermostat T705 not working, which may lead to troubleshooting the pro t705 thermostat.

There are reasons mentioned below for not working the Pro1 Thermostat.

  • Selection of wrong settings of the thermostat.
  •  Discharge of batteries.
  •  Accumulation of Dust.
  •  The issue is the wiring.

Let me tell you the steps for troubleshooting the pro t705 thermostat individually.

Also read, 5 Best smart lock for outdoor gate 2023


How to Troubleshoot Your Pro1 T705 Thermostat

1. Check For the wrongly selected Settings.

In your Pro t750 Thermostat, you will get two types of settings one is the System Switch settings and the other one is the Fan Switch settings.

Let me explain one by one.

In the System switch settings, you can select three different options: Heat, Cool, and OFF.

You can select Heat to turn on the heat mode, Cool to turn on the cool mode, and OFF to turn off both the Heat and cool modes.

Please note that if your system switch is selected to the OFF settings, then your pro1 thermostat won’t work. Make sure you check it while troubleshooting your pro1 thermostat.

However, with the Fan switch, you can select two options one is the ON, and the other is the AUTO. When you select the ON option, the fan will work continuously. However, when you select AUTO, the fan only will work when you run the Heat and cool modes.

Still, your Pro1 Thermostat T705 is Not Working. Then, try to follow the next step mentioned below.

2. Restart Your Thermostat.

You can remove the batteries or replace them if that is the case. Or turn the ON or OFF the thermostat for some time.

It is just like the mobile device, which we restart when it get lags. As you do that, you can run the thermostat on any settings, such as cooling or heating modes, to check whether it is working.

Still, your Pro1 Thermostat T705 is Not Working; follow the next troubleshooting step.

3. Replace the Discharged Batteries.

In the previous step, I told you about restarting the thermostat or removing or putting back the battery, but if still, your Pro1 Thermostat T705 is Not Working, then it might be the case that your batteries do not have enough charge or they got drained out.

In that case, you can replace that battery with the new one. However, I recommend using the right battery pair in your Pro T705 Thermostat.

You can check out the Duracell Coppertop AA Batteries or any other non-rechargeable batteries on Amazon.

Please note that you can check the low battery indicator to know the battery life of the thermostat.

4. Clean the Thermostat.

Whether it is your thermostat or any other device, it is recommended to maintain it occasionally. You can maintain it by cleaning it from time to time.

There might be dust or carbon near your batteries or other components of your Pro t705 thermostat, which might be causing any malfunction.

All you need to do is remove the thermostat from the wall and use compressed air to remove all the dust inside your thermostat.

5. Reset the pro t705 thermostat.

You tried cleaning your Pro1 thermostat, you restarted it changed the batteries, and even if it is not working, then you need to reset the Pro1 T705 Thermostat, which you can do as follows.

  • You can remove the batteries from the thermostat and put them back in the opposite terminals; for example, put the positive side of the battery to the negative terminal for a few seconds and then reinsert it properly and restart the thermostat.
  •  Another thing you can do is flip your HVAC system circuit breaker off for about 30 seconds, flip it back on, and restart it.

It will reset all of your previous settings of the thermostat, which you might be required to set again.

6. Check Your Thermostat’s Wiring

Still, if your Pro1 Thermostat T705 is Not Working, you can consider consulting a technician. Still, you can check out the thermostat’s wiring, which might be the issue.

However, you could do this via the expert.

7. Your Pro1 T705 Thermostat might be Broken.

Your thermostat might have lived long, and this is the time to say goodbye. In short, it might be broken.

You can figure out whether your thermostat is broken or not by checking for the following features mentioned below-

  • You can’t read the thermostat display; it might be non-responsible.
  •  Your thermostat or AC is still working even if your thermostat has been turned off for some time.
  •  Your thermostat might be turned off before it reaches the selected temperature settings.

Can’t Read the Display

There are a few reasons for not being able to read the thermostat display mentioned below-

  • Which are your Batteries might be dead.
  •  Or the circuit breaker is tripped.

You can replace the batteries to fix this, restart the thermostat, and check whether the display is working.

Make sure your used batteries are dried and do not have any dust inside your thermostat.

Even now, the display is not working; then it might be the second case of the circuit breaker might be tripped or the fuse might be blown.

You can turn on the circuit breaker again or replace the blown fuse and then restart your thermostat. Make sure you completely click it off and then on again the circuit breaker. 

Still, if the display is not working, you can turn off the circuit breaker and clean the thermostat, and even if it is not working, you have to consult an expert.

The thermostat setting and room temperature don’t match.

It generally happens when you don’t maintain your device, and there might be dust that causes this malfunction.

However, you can shut off the power to the circuit breaker, clean it, and check for the wires, which might be damaged.

Then restart the thermostat; if it still does not match the temperature to the room temperature, then you might be needed to consult the technician.


Verdict: Pro t705 Thermostat Troubleshooting.

After following the Pro1 thermostat troubleshooting steps and still, it is not working, then it is recommended to talk to the technician and ask him wheater it can be fixed or not.

If your thermostat is under warranty, then talk to customer support.

If it is beyond repair, consider purchasing a new unit, like ELECTECK Digital Thermostat or the Heagstat 5-1-1 Day Programmable Thermostat.

Also read, 7 Best Heat Pump Thermostat Reviews and Buying Guide 2023

I hope you have liked our blog post on steps for troubleshooting the pro t705 thermostat.

If you have any doubt, please tell me in the comment section. Also, share this in-depth article with your loved ones facing the same issue with their thermostat.


Frequently Asked Questions.

How do you reset a t705 thermostat?

You can reset your t705 thermostat by putting the batteries to opposite terminals, e.g., put the positive side of the battery to the negative terminal for a few seconds and then reinsert it properly and restart the thermostat. You can also flip the HVAC system circuit breaker off similarly.

What is a common problem with thermostats?

Dirt and debris accumulating over the components of the thermostat may lead to a common problem with the thermostat.

What are the signs of a thermostat not working?

The thermostat temperature is not matching the room temperature, or the display is not showing some signs that the Pro1 T705 thermostat is not working.

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