TIMER light 4-time flash — Heat exchanger sensor error

What does TIMER light 4-time flash mean?

The TIMER light on your air conditioner flashes four times, signaling an error with the heat exchanger sensor. This sensor is crucial for monitoring the temperature within the heat exchanger.

• Broken heat exchanger sensor wire
• Poor connector connection at the heat exchanger sensor
• Defective outdoor unit boards
• Broken heat exchanger fluid pipe sensor wire

Click steps to track your progress.

1. 1

   Inspect the wiring and connections of the heat exchanger sensor for any signs of damage or poor contact.

2. 2

   Check for any obstructions or debris around the heat exchanger that might interfere with the sensor.

3. 3

   If the error persists after checking connections, switch off the power to the unit and seek professional help.

4. 4

   Ensure proper airflow around the indoor unit to prevent overheating of the heat exchanger.

5. 5

   Verify that the air filters are clean, as clogged filters can impact heat exchanger performance.