
- Remove the thermostat cover
- Clean the inside components gently with a soft brush
- Set the thermostat to its lowest cooling setting
- Clean the components again with a soft brush
- Set the thermostat to its highest heating setting and clean the coil again
- Reset your thermostat to its desired setting
- Turn your thermostat off by switching it to the off position.
- Find the breaker that powers your HVAC system and turn it off.
- Wait 30 seconds and turn the breaker back on.
- Turn your thermostat back on.
How do I change a furnace thermostat?
- 2 Remove Existing Thermostat. Remove the old thermostat cover plate with a screwdriver. ...
- 3 Separate & Label Wires. ...
- 4 Install a C-Wire if Needed. ...
- 5 Install the New Thermostat Base and Wire. ...
- 6 Mount Thermostat and Restore Power. ...
- 8 Tips for Installing Programmable Thermostats. ...
How to pick the right thermostat for your furnace?
You might consider the following features:
- Touch screen controls to help you modify settings right at your fingertips
- Backlit display panel to help you see what you are doing more clearly even in dimly lit or dark backgrounds.
- Selectable program periods enable you to set temperatures for separate time periods to suit your needs.
How to troubleshoot and reset a furnace?
- Some really old furnaces won’t have a switch. ...
- The light switch will typically have a faceplate and an electrical box to house the wires, just like a regular outlet.
- If you flip the switch and your furnace kicks on, you were probably trying to troubleshoot the furnace when it was off!
How to Reset my furnace?
which can potentially inhibit the airflow and performance of your system. This will also mean you might have to change the filter more often. When researching the best furnace filters, we looked ...

How do you manually reset a thermostat?
Reset the Thermostat Common methods for resetting a thermostat include installing the battery backward for five seconds, pushing a recessed reset button with a pin or paper clip, or shutting off the breaker to the thermostat for 30 seconds.
When should I reset my thermostat?
Any time you are having an issue with heating and cooling units, such as after a sudden power failure or after your children have had 'control' of the system while you've been away, resetting the thermostat should be the first thing you try when attempting to rectify HVAC system issues.
What happens if you reset your thermostat?
It will turn completely off, and depending on the type of thermostat, it may reset to factory settings. The entire process should take less than a minute. Once it has finished resetting, you can adjust the controls to achieve a desirable indoor temperature.
How do I fix an unresponsive thermostat?
If the thermostat is still unresponsive, make sure the breaker is shut off and remove the cover. If it looks dirty inside, use canned air or a soft artist brush to clean away accumulated grime that may be affecting its functionality. Then look for issues like loose wiring or terminal screws and tighten them up.
Where is the reset button on my furnace?
Locate the reset button on the furnace and press it to reset the furnace. It is usually located inside the blower compartment on the side of the blower motor. Be cautious as the housing may be hot. If the button is popped up, press it down.
How can I tell if my thermostat is working?
6 Signs Your Thermostat Is BrokenYour HVAC System Won't Turn on. ... Your Air Conditioner or Heater Runs Non-Stop. ... Differing Temperature Readings Throughout the Home. ... Short-Cycling. ... Programmed Settings Keep Getting Deleted. ... There's No Response to Changes in Temperature Settings. ... Why Thermostats Break Down.More items...•
What does reset button look like on thermostat?
Arrow Buttons – Normally, a thermostat has two arrow buttons for resetting the temperature higher or lower. If you adjust these, the new setting is temporary, only lasting until you have reached the end of the previously set program.
Where is the reset button on Honeywell thermostat?
Reset Honeywell Lyric Round ThermostatThere's a cloud icon on the left side of the thermostat. Press it and hold.Press the down arrow. The reset prompt will appear.Select Reset. Your Lyric Round thermostat is reset.
How do I get my thermostat off hold?
Press + or - to adjust the temperature.TEMPORARY HOLD is displayed and the setpoint temperature flashes. While it's flashing, press Hold (Mode) button to change to Permanent Hold.To cancel the Permanent Hold, press + or - and then press Cancel.
Why is my furnace not responding to thermostat?
When a furnace is not responding to a thermostat, there is either a problem with the heating unit or the actual thermostat. Lack of power to the thermostat, wrong settings, and outdated software might be to blame, as well as faulty wiring, a tripped breaker, and a dirty furnace filter.
Why is my furnace thermostat not working?
Loose connections, frayed wires, and aged wires all can cause your thermostat to eventually lose its connection to your A/C and heating system. Inspect your wiring thoroughly, making sure the connections are tight, and replace any wires as deemed necessary by you or an HVAC professional.
How do I know if my furnace thermostat is bad?
7 Ways to Tell Your Thermostat Is BrokenThermostat Has No Power. ... AC or Furnace Won't Turn On. ... Heater or AC Won't Turn Off. ... Thermostat Doesn't Match Room Temperature. ... Thermostat Doesn't Respond. ... Short Cycling. ... Thermostat Forgets Programmed Settings. ... Thermostat Replacement Services.
How to reset a programmable thermostat?
1. Programmable Thermostat. Resetting a programmable thermostat requires removal of the batteries or a battery flip-flop. Here are the step-by-step directions: Turn your thermostat off by switching it to the off position. Open the battery door.
How to reset thermostat if it is not battery operated?
Here are the step-by-step reset instructions: Turn your thermostat off by switching it to the off position. Find the breaker that powers your HVAC system and turn it off. Wait 30 seconds and turn the breaker back on.
How to turn off a thermostat?
Turn your thermostat off by switching it to the off position. Open the battery door. If the battery door is on the back, you may need to remove your thermostat from the wall. Remove the batteries. Insert the batteries backward so the negative sides line up to the positive terminal for five seconds.
How to troubleshoot a mechanical thermostat?
To troubleshoot your issues with a mechanical thermostat you must start with taking the cover off and making sure everything is mounted properly and secure inside the thermostat. If everything looks correct, you may need to reset the circuit breaker.
How to clean a thermostat coil?
Here are the step-by-step directions: Remove the thermostat cover. Clean the inside components gently with a soft brush. Set the thermostat to its lowest cooling setting. Clean the components again with a soft brush. Set the thermostat to its highest heating setting and clean the coil again.
