failure mode
FM-15: FM-15 THE TOOL OR BATTERY OVERHEATS OR COOLING AIRFLOW IS BLOCKED
FM-15 THE TOOL OR BATTERY OVERHEATS OR COOLING AIRFLOW IS BLOCKED
Diagnostic overview
FM-15 THE TOOL OR BATTERY OVERHEATS OR COOLING AIRFLOW IS BLOCKED
Likely Root Causes
- Vents are blocked by dust, grip, or packed debris
- Long low-speed or heavy work exceeds the cooling duty cycle
- Dull, bound, side-loaded, or incorrect bit creates excess load
- Battery has internal damage or thermal stress
- Brush, motor, bearing, gear, or switch friction is excessive
Quick Checks
- known-good battery.
Related symptoms
The drill or battery becomes rapidly or severely hot, or little cooling air can move through the tool vents.
The drill or battery becomes rapidly or severely hot, or 1. Stop, set the drill on a nonflammable surface, and remove the pack when safe.
Included in the full manual
- root cause analysis
- tools needed
- step-by-step repair procedure
- diagrams
- exploded views
- post-repair checks
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