An air conditioner that refuses to turn off can be frustrating and even costly. While your unit is designed to cycle on and off based on the room temperature, there are times when it might keep running non-stop. So, what could be causing this issue? Let’s explore some possible reasons and how you can fix them.
Understanding How Your Aircon Works
Before we dive into the causes, it’s important to understand how your air conditioner functions. Your AC turns on when the room temperature exceeds the thermostat setting and turns off once the desired temperature is reached. However, if it continues running without stopping, there could be an underlying problem.
Common Reasons Your Aircon Won’t Turn Off
Now, let’s take a closer look at the most common reasons your air conditioner keeps running.
Dirty or Clogged Air Filter – Over time, dust and debris accumulate in your air filter, restricting airflow. As a result, your aircon has to work harder to cool the room, causing it to run continuously. To fix this, check and clean your filter regularly.
Thermostat Issues – A faulty thermostat can prevent your AC from shutting off. If the thermostat is malfunctioning or inaccurately detecting the temperature, your aircon may not receive the signal to turn off. Try adjusting the settings or replacing the thermostat if necessary.
Frozen Evaporator Coils – When refrigerant levels are low or airflow is restricted, the evaporator coils can freeze, preventing the AC from reaching the desired temperature. As a result, the unit keeps running in an attempt to cool the space. In this case, you should turn off the AC and allow the coils to defrost before seeking professional assistance.
Faulty Relay Switch – The relay switch controls the on and off cycle of your air conditioner. If this switch is stuck or broken, your unit may continue running indefinitely. A professional technician can inspect and replace the faulty switch if needed.
Incorrect AC Size – If your air conditioner is too small for the space, it may struggle to cool the room efficiently. On the other hand, an oversized unit may cool too quickly, leading to short cycles that cause inefficiencies. Ensuring the right AC size for your space is key to optimal performance.
How to Fix the Issue
Now that we’ve covered the potential causes, here’s what you can do to resolve the problem:
Check and clean the air filter – A simple cleaning or replacement can improve airflow and efficiency.
Inspect the thermostat – Make sure it’s set correctly and functioning properly.
Look for frozen coils – If you spot ice buildup, turn off the AC and allow it to thaw.
Contact a professional – If you’re unable to pinpoint the issue, it’s best to get expert help.
Keep Your Aircon Running Smoothly with Lion City Air Conditioner Services PTE LTD!
If your AC won’t turn off or is experiencing any other issues, our experienced technicians at Lion City Air Conditioner Services PTE LTD are here to help! We provide expert diagnostics and professional servicing to keep your aircon in top condition.
📅 Schedule your service today! 🌐 Website: lioncityaircon.sg 📲 WhatsApp: +65 8818 5781
