Troubleshooting

Troubleshooting: Why Does a Lift Still Show “Down” After Reaching the First Floor?
A lift can physically reach the first floor and still fail to recognize it has arrived — not because of a hydraulic or PLC fault, but because the first-floor limit switch is installed in the wrong position. This article walks through a real customer case, explains the difference between a mechanical stop and a position limit switch, and provides a step-by-step troubleshooting checklist to diagnose and fix the problem. Read more...
Scissor Lift Platform Tilting Due to Off-Center Loading: Causes, Risks and Prevention
Learn why hydraulic scissor lift platforms tilt under off-center loading, why guide rails cannot fully prevent it, and how installing a tilt sensor can protect your equipment and operators from structural damage. Read more...
Troubleshooting: Home Lift Reaches the Ground Floor but the Landing Door Won't Unlock
A home lift reaches the ground floor but the landing door stays locked. Learn how we diagnosed the issue remotely — from PLC logic to hydraulic valve adjustment — and resolved it with a simple fix. Read more...
Why Proper Grounding in a Control Cabinet Matters More Than We Realized
A real-world account of how induced voltage in a lift control cabinet led us to redesign our grounding approach — and why proper earthing is essential for safety, PLC stability, and VFD performance. Read more...
Home Lift Troubleshooting: One Folding Door Reopens When Closing the Other Door
A customer reported that closing one folding door on their home lift caused the other to reopen. This case study explains the root cause — trapped air pressure — and the simple 5 mm floor clearance fix that resolved it. Read more...
Why Low Input Voltage Can Cause VFD Faults in Home Lifts
When a home lift stops immediately after pressing UP and the VFD displays an ELUO fault, the cause is often low input voltage rather than inverter failure. This article explains how under-voltage protection works, why manual mode may still function normally, and how to check wiring and supply voltage to resolve the fault. Read more...