1. General Information

• Manufacturer: Mitsubishi Electric (Elevator & Escalator Division)

• Model: LHH-205AG24

• Type: Elevator Car Operation Panel / Display Control Board

• Common Use: Installed inside elevator cars to control button inputs, floor displays, and possibly emergency communication.

2. Key Features & Functions

Primary Functions:

• Button Input Processing – Registers passenger requests (floor selections, door open/close commands).

• Floor Indicator Control – Drives 7-segment LED displays or other indicators to show current floor position.

• Communication Interface – Connects to the main elevator controller (likely via serial or CAN bus).

• Emergency & Alarm Integration – May interface with emergency stop buttons, alarm systems, or intercoms.

Technical Specifications (Estimated):

• Input Voltage: Likely 24V DC or 110V AC (varies by elevator model).

• Display Type: Supports LED or LCD floor indicators (depends on elevator model).

• Button Interface: Matrix or direct wiring for car operation panel buttons.

• Safety Compliance: Meets elevator safety standards (EN 81-20/50, ASME A17.1, etc.).

3. Common Applications

• Used in Mitsubishi NEXIEZ, ELENESSA, or older elevator models.

• Typically found in:

  • Elevator car operation panels (inside the cab).

  • Hall call panels (if compatible with the system).

4. Troubleshooting & Common Issues

Symptoms of a Faulty LHH-205AG24 Board:

• Unresponsive buttons (floor selections not registering).

• Display malfunctions (missing segments, flickering, or no floor indication).

• Elevator freezes or ignores commands.

• Error codes related to car operation panel communication.

Diagnostic Steps:

1. Check power supply (confirm correct voltage to the board).

2. Inspect connectors for loose or corroded pins.

3. Test button inputs with a multimeter (check for signal continuity).

4. Look for burnt components (capacitors, resistors, ICs).

5. Replacement & Sourcing Options

Where to Buy?

• Mitsubishi OEM Suppliers (authorized elevator parts distributors).

• Elevator Parts Specialists (e.g., ELEVATORPARTS.COM, Direct Elevator Parts).

• Used/Refurbished Units (eBay, B2B marketplaces – verify compatibility).

Installation Notes:

• Should be installed by certified elevator technicians (safety & compliance reasons).

• Ensure proper model matching (cross-check with elevator serial number).

Xi’an Sulab Machinery Co., Ltd is committed to providing our customers with the highest quality elevator and escalator parts in the most timely and professional manner. The main brands are Otis, KONE, Sigma, Hyundai, , etc. There are also elevator and escalator spare parts of Chinese brands such as Canny, BLT and IFE. We also do OEM of escalators and moving walks, as well as modernization of elevators.

Our basic premise in building our business is to help our customers meet their requirements by providing exceptional customer service, competitive prices and quality OEM parts. We provide our valued customers with elevators and escalators with the best quality and competitive prices.

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