Jun 12, 2026
Monarch Fault Codes And Solutions
E01: Inverter Unit Protection Fault Level: 5 Fault Causes: 1. Main circuit output grounding or short circuit; 2. Traction machine wiring too long; 3. Overheating operating environment; 4. Loose int...
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Jun 08, 2026
May 29, 2026
How To Check Fault Codes On A Shanghai Mitsubishi 003 Series Elevator?
How to check fault codes on a Shanghai Mitsubishi 003 series elevator?
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May 22, 2026
Troubleshooting Common Mitsubishi Elevator SPVF Faults (Part 2)
The door operator board uses a three-phase control system with voltage and speed regulation. After the door closes, one phase is reduced in voltage by a resistor to maintain a small torque to preve...
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May 22, 2026
Troubleshooting Common Mitsubishi Elevator SPVF Faults (Part 1)
The elevator safety circuit is working, and the external wiring is normal, but it still cannot start (relay 89 does not operate, and indicator light 89 is not lit). First, confirm that safety circu...
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May 20, 2026
2026 China International Elevator Exhibition Grandly Opened
On May 20, 2026, the 2026 China International Elevator Exhibition, a premier global event for the elevator industry, officially opened in Area A of the China Import and Export Fair Complex in Guang...
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May 13, 2026
Otis OVF20 Working Principle
The Otis OVF20 inverter (drive) converts AC power into variable frequency AC power to control elevator motors. This article explains its working principle and main components in detail.
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Apr 22, 2026
The Second Elevator Technology Exchange Conference Of 2026 Was Successfully H...
On April 16, 2026, the second elevator technology exchange meeting—Otis ACD series in-depth commissioning and skills upgrade activity—jointly organized by Yongxian Group and Shaanxi Sanjin Elevator...
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