How To Fix The Error Code CH45 For LG Air Conditioner

(Many of the links in this article redirect to a specific reviewed product. Your purchase of these products through affiliate links helps to generate commission for Storables.com, at no extra cost. Learn more)

A Common Issue with LG Air Conditioners: CH45 – Outdoor Oil Temperature Sensor Fault

Picture this – it’s a scorching hot summer day, and you’re relying on your trusty LG air conditioner to keep your home cool and comfortable. But suddenly, you notice an error code flashing on the display: CH45. What does it mean, and how can you fix it? Don’t panic! In this article, we’ll dive into the details of the CH45 error code, explain what it signifies, and provide you with some easy troubleshooting steps.

Understanding the CH45 Error Code

When your LG air conditioner displays the CH45 error code, it indicates an issue with the outdoor oil temperature sensor. This sensor plays a crucial role in regulating the compressor’s performance and ensuring optimal cooling efficiency. It monitors the temperature of the oil in the outdoor unit and relays that information to the control board. However, if the sensor develops a fault or becomes damaged, it can trigger the CH45 error code.

How to Fix the CH45 Error Code

If you encounter the CH45 error code on your LG air conditioner, here are the steps you can follow to resolve the issue:

1. Turn off the AC: Start by turning off the air conditioner’s power. Locate the power switch on the unit or switch off the circuit breaker that supplies electricity to it. This will help prevent any electrical mishap while you’re working on the unit.
2. Clean the sensor: Carefully remove the outdoor unit cover to access the sensor. Inspect the sensor for any dirt, debris, or signs of damage. If you notice any buildup, gently clean the sensor using a soft brush or compressed air. This can often resolve minor issues causing the CH45 error code.
3. Check the wiring: Carefully examine the wiring connected to the outdoor oil temperature sensor. Ensure that the wires are securely fastened and free from any damage. Tighten any loose connections and repair or replace any frayed wires if necessary.
4. Reset the AC: After cleaning the sensor and checking the wiring, give the air conditioner a fresh start. Reconnect the power to the unit by either switching on the power switch or turning on the circuit breaker. If the CH45 error code was triggered by a temporary glitch, this step should clear it.
5. Contact a professional: If you have followed the troubleshooting steps above and the CH45 error code persists, it’s time to seek assistance from a qualified HVAC technician. They have the expertise to diagnose the issue accurately and carry out any necessary repairs or sensor replacements.

Remember, dealing with electrical components requires caution. If you’re uncertain or uncomfortable performing any of the troubleshooting steps, it’s always best to leave it to the professionals.

Check the air filter for blockages and clean or replace if necessary. Also, ensure that the outdoor unit is not obstructed and that the air intake and outlet are clear. If the issue persists, contact a professional technician for further assistance.

Conclusion

The CH45 error code on your LG air conditioner indicates a fault with the outdoor oil temperature sensor. By following the steps mentioned above, you can take proactive measures to address the issue and restore your AC’s normal functioning. However, if you’re unsure or unable to resolve the problem, don’t hesitate to call in the experts for a more in-depth diagnosis and solution. Stay cool and comfortable!