Troubleshooting Guide
How to Fix Noblelift FE4P40Q Fault Code 3.9
Main Contactor Did Not Close
Error Code: 3.9Equipment: Lithium 4-Wheel Electric Forklift
Error Code 3.9 Diagnosis
What This Code Means
Main Contactor Did Not Close
Possible Causes
- 1Contactor not closed, tips oxidized or burned
Recommended Solution
Clean or replace contactor. Check for blown fuse.
NobleliftFE4P40Q
Noblelift Lithium 4-Wheel Electric Forklift
Machine Specs
tiresSolid Pneumatic
batteryLithium-Ion
voltage48V
capacity4000 lb
Why Trust This Guide?
- Based on official Noblelift service documentation
- Verified by certified equipment technicians
- Updated with latest service bulletins