TCL Air Conditioner Error E6

What does this error mean on TCL air conditioner screens?

Summer is here, you go to turn on your air conditioner and... boom! The unit shows an unexpected Error Code E6. This issue with TCL air conditioners is typically related to a voltage variation problem affecting the internal unit’s (split) fan. It is usually caused by a malfunction in the control board, specifically in the TRIAC that manages the voltage supply to the fan.

But don’t worry, that’s why we’re here. In this article, we’ll explain how to diagnose and fix this issue step by step. So stay with us and read through all the recommendations we have for you. First, let’s understand the possible causes of this problem:

• Voltage variation: An unstable voltage supply can prevent the fan from functioning properly, which causes the system to display the error code.
• Faulty TRIAC: This component on the control board is essential for managing the fan’s power supply. If it fails, it can directly impact the operation of the indoor fan in the split unit.
• Damaged or loose connections: Wiring from the fan or the control board may be damaged or loose, interrupting the proper power flow. It’s recommended to inspect all cables thoroughly to rule out this cause.
• Defective fan motor: Although less common, the fan motor itself may be faulty or burnt out. If so, it should be checked and possibly replaced.

How can you fix error E6 on a TCL air conditioner?

Follow these steps carefully, and we’re confident you’ll be able to solve the issue. We've organized them to make the process as easy as possible:

1. Turn off and unplug the air conditioner for a few minutes: First, completely shut down the air conditioner and disconnect it from the power source. Leave it unplugged for several minutes before reconnecting it. This helps discharge any residual energy in the electronic components. It may not be the final solution, but it’s worth a try.
2. Check the electrical connections of the air conditioner: Turn off and unplug the unit to work safely. Ensure that all connections between the fan and control board are secure and undamaged. Look for frayed, burnt, or corroded wires. Replace any damaged cables with new ones of the same gauge and type.
3. Clean and inspect the fan to ensure it’s functioning properly: Remove any dust or debris from the fan blades and motor. Make sure the blades rotate freely without resistance. If the motor is defective, replace it with a compatible one. If the blades don’t spin freely, the fan should also be replaced.
4. Inspect the electronic control board: Open the internal unit’s cover to access the board. Use a multimeter to test its components, focusing especially on the TRIAC. Check visually for damage like burns or melted parts. If the TRIAC is faulty, replace it with a compatible one. If you're not experienced in electronics, it's best to contact a qualified technician.
5. Test the air conditioner and recheck if necessary: After completing the above steps, reassemble the unit and plug it back in. Turn it on and check if the E6 error is gone and the fan works properly. If the problem persists, review the previous steps again.
6. If the issue continues, a qualified technician might be your best option: This may be beyond your knowledge, and even experienced HVAC technicians sometimes need help with such specific electronic issues. We recommend contacting a professional HVAC technician with electronic repair expertise to examine the control board.

Don’t hesitate to seek professional help if you feel stuck during the process! To prevent this issue from recurring, we recommend using a voltage regulator, keeping the unit clean, and performing maintenance at least once or twice a year to ensure your air conditioner operates properly and lasts longer.