CodeRegistry
Brands
  1. Home
  2. Stihl
  3. AP System
  4. 3 LEDs light up red
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

3 LEDs light up red

3 LEDs light up red — Battery product is too hot

Stihl · AP System

What does 3 LEDs light up red mean?

The battery product itself has overheated, likely due to extended use or demanding conditions. This is a safety measure to prevent damage.

Common Causes

  • Overheating of the connected battery product
  • Continuous heavy use of the product

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Remove the battery from the battery product.

  2. 2

    Allow the battery product to cool down completely in a well-ventilated area.

  3. 3

    Ensure the product's vents are not blocked during operation.

  4. 4

    Resume use after the product has cooled.

Browse all codes in this manual (12)
Verified technical data. Last updated: April 2026

Related Faults

1 LED flashes green1 LED flashes green — Battery charge is too low1 LED lights up steady red1 LED steady red — Battery is too warm or too cold2 lit green LEDs2 lit green LEDs — Battery charge between 40% and 60%
Source: Stihl AP System
Open Manual (Page 8)Search more codes in this manual