2 flashes, 5 beeps - AC Low / AC High Voltage

What does 25 mean?

This error code means the AC input voltage to the unit is abnormal, either too low or too high. This could be a problem with the building's electrical supply or internal power components.

• Abnormal AC voltage input
• Unstable mains power supply
• Internal power component issue

Click steps to track your progress.

1. 1

   Turn off the unit and check the main power supply voltage at the breaker.

2. 2

   Ensure the voltage is within the unit's specified operating range.

3. 3

   Reset the unit by turning off the power for 1 minute.

4. 4

   If the voltage is consistently outside the normal range, contact an electrician or HVAC professional.