Need Help With Thermostat In your area?
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You hear a small click from the wall. You wait for the warm air to blow. Nothing happens at all.
The house stays cold and quiet. Why does my thermostat click but no heat comes on? We will show you how to find the problem.
What Does The Click Mean
That little sound is actually a good sign. It is a tiny mechanical switch called a relay. The click means your thermostat is trying to work.
It sends a start signal to your furnace. If the unit clicks but stays cold, the wall unit is fine.
The real problem is usually hiding in the basement or attic. Let us go look at the heating machine.
Why Is My Thermostat Clicking Repeatedly
Sometimes you hear a fast clicking noise instead of just one click. A why is my thermostat clicking repeatedly issue is very common.
This means the unit does not have enough power to stay on. It tries to start but fails right away. This happens a lot with electric and smart models.
You usually just need fresh batteries to fix this. Check the Honeywell Home Support site for exact battery types.
When Smart Thermostats Fail
A Nest thermostat clicks but no heat turns on for a reason. Nest units need a constant power wire called a C wire.
If that wire is loose, the internal battery dies quickly. A honeywell thermostat clicks but no heat turns on during a safety delay.
Wait five minutes to see if the heat starts. Read our Furnace Heating guide to learn more about this.
Need Help With Thermostat In your area?
Check the Furnace Power
The thermostat is sending the signal properly. The furnace is simply not listening to it. You need to check the main power at the furnace.
Go look at your big heating machine in the basement. Make sure the power switch is flipped on. It looks just like a normal room light switch.
Visit Energy.gov Heating Systems to see how these machines connect. It is a great place to learn.
How Do I Reset My Thermostat
Sometimes the small computer inside gets confused. You might need to clear the temporary memory. How do I reset my thermostat easily?
Pull the plastic faceplate right off the wall. Take the batteries out for five full minutes. Put them back in and test the heat again.
Look at our Carrier Furnace Codes guide for extra help. That page gives details on resetting the main machine.
FAQ
Will a furnace run with a dead thermostat?
The furnace needs the thermostat to tell it what to do. The furnace stays off without that electrical signal.
How do I know if my thermostat is blown?
A blown thermostat will have a completely black screen.
What if my electric thermostat clicks but no heat comes on?
Electric baseboard thermostats carry high voltage current. The heating element might be completely broken.
Conclusion
A clicking sound means the wall unit is doing its job. Change the batteries if it clicks too fast. Check the power switch on your furnace next.
If your house is still cold, we can help you out. Call our team for HVAC Services today. We can fix the problem fast and keep you warm.
Visit our Contact Us page to reach our team. We are always happy to help.
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