F99 — DC Peak Current Control

What does F99 mean?

This error is triggered when the current to the IPM exceeds its set limit. If this happens repeatedly, all relays are cut off, and the Timer LED blinks with F99 displayed.

• Excessive current draw by the IPM
• Electrical fault
• Component malfunction

Click steps to track your progress.

1. 1

   Turn off the air conditioner at the main power switch.

2. 2

   Wait for at least 3 minutes before turning it back on.

3. 3

   If the F99 error reappears immediately or frequently, do not attempt to restart.

4. 4

   Contact a qualified service technician for diagnosis and repair.