Why Your Thermostat Clicks But Nothing Happens

What can be more frustrating than an air conditioner that doesn’t power on during a hot day. You turn on the thermostat settings, hear that click but the AC does not turn on. What is the issue?

This is a pretty common problem among and has several solutions that begin with simple fixes that you can do yourself to calling for professional help.

In this blog, the Service Genius technicians put together the most common reasons why you hear that clicking noise from the thermostat, but the AC does not turn on. Read on to learn about expert troubleshooting tips for restoring your AC unit.

Common Reasons for Thermostat Clicks Without System Response

The purpose of the thermostat is to control the respond to the current room temperature by signaling the AC unit to kick into gear or to turn off. When you hear that clicking noise, it means the thermostat is trying to signal the AC system to power on and bring the room’s temperature back to the preset setting. There are a few reasons for why the AC system wouldn’t respond to the thermostat’s clicks, including:

• Tripped circuit breaker
• A blown fuse
• Dead or weak thermostat batteries
• Damaged or loosed connections in the thermostat wiring
• Clogged air filters or vents
• Faulty capacitor or contactor
• A broken blower motor or compressor
• Broken relay system

Any one of these issues will prevent the air conditioning system from cooling the home when required. Luckily, there are things you can do to troubleshoot these issues, from simple fixes through a DIY project to calling a technician for professional help. But first, it is important to diagnose the problem.

Steps to Diagnose the Issue

Before calling a professional for help, you can try to diagnose the reason why the AC system isn’t responding to the thermostat’s clicking sound by following the steps outlined below.

1. Check the Display

Start by checking to see that the thermostat is on. If it isn’t, check its batteries and ensure it is turned on at the circuit breaker.

2. Test the Mode and Temperature Setting

If the thermostat is on, make sure that it is set to “Cool” or “Heat”, depending on the temperatures you’re needing in the home. Also, make sure the settings are set to the right temperature.

3. Listen for the Clicking Sound

Adjust the temperature by a couple of degrees and listen for the clicking sound. If you don’t hear it, the thermostat may be faulty.

4. Inspect the Circuit Breaker Panel

Check out the circuit breaker for tripped breakers that may be interrupting the flow of electricity to the AC system. Reset the breaker if needed.

5. Check the Air Filter

The air filter can be a common culprit of many AC issues. In some systems, clogged air filters cause shutdowns as a safety mechanism. Check and replace the filter to see if it will help with the issue.

6. Check the Wiring

Remove the cover of the thermostat and check the wiring for any corroded, disconnected, or loose connections.

Using these simple diagnostic tips can help you determine whether you have a malfunctioning thermostat, a clogged filter, or an issue with the AC system itself. However, if neither of these steps helped you get to the bottom of the problem, you will probably need to contact an HVAC professional for help.

When to Call a Professional HVAC Technician

When basic troubleshooting doesn’t solve your thermostat issues, it’s time to consider professional solutions. Because let’s face it, even the biggest DIY enthusiasts have to let go and call in the pros. If you followed the troubleshooting steps we outlined above and nothing changed, it is time to call a qualified technician for help. You should also call a technician when you notice the following issues—

• There is a suspected electrical or wiring issue
• The AC system or thermostat is really old
• You can’t access the thermostat adequately to diagnose the issue
• There are strange or loud noises when the air conditioner is working

Sometimes, attempting a DIY repair can be dangerous, and a qualified technician who is trained to handle AC problems should handle the issue for you.

Preventative Measures to Avoid Future Issues

To prevent future thermostat problems, regular maintenance and checks are a must. It’s simple— schedule a yearly inspection of your thermostat. Looking for signs of dust build-up, loose wiring, and outdated batteries. These are minor issues you can tackle yourself and keep the thermostat in good order.

Don’t overlook the importance of replacing your thermostat’s batteries annually. It’s a small step that can save you from big headaches down the road.

Are you using a programmable thermostat? Make sure it’s programmed correctly. Incorrect settings can lead to unexpected failures. If you’re unsure, check the user manual or consult with a professional. It’s your thermostat, your rules.

Finally, consider a smart thermostat. It gives you the freedom to control your home’s temperature remotely and alerts you to potential issues.

Why Choose Service Genius for Your HVAC Needs

All Service Genius HVAC technicians have the experience and the right tools to accurately diagnose and fix your thermostat problems. They’ll get to the root of the problem, whether it’s a faulty wiring, a dead battery, or a malfunctioning sensor. You won’t have to guess or worry about making matters worse. That’s the kind of comfort and freedom a licensed professional from Service Genius can provide.

• Customer satisfaction guaranteed
• Prompt and professional service for all AC unit needs
• 24/7 Emergency repairs available 
• Fair and transparent pricing
• Financing options available 
• Knowledgeable technicians at your service

Stay proactive, folks. In the world of thermostats, prevention is freedom. It’s your chance to dictate the terms, rather than being at the mercy of unexpected breakdowns. Here’s to fewer clicks and more world class customizable comfort!  

Contact Service Genius today for the #1 HVAC Repair company in Southern California.