F99 - Timer LED blinking due to excessive DC peak current

What does F99 mean?

The system has detected excessive DC peak current to the IPM, causing operation to stop. The Timer LED will blink. This fault occurs repeatedly if the set current value is exceeded frequently.

• Excessive current to the IPM
• Electrical faults
• Component malfunction

Click steps to track your progress.

1. 1

   Turn off the air conditioner.

2. 2

   Verify that the power supply is stable and within specifications.

3. 3

   Allow the unit to rest for a few minutes.

4. 4

   Contact a qualified technician for diagnosis and repair.