Mitsubishi Electric Automotive E2221B452 Electronic Control Board

The Mitsubishi Electric E2221B452 is a genuine OEM electronic control PC board designed for Mitsubishi ductless mini-split air conditioning and heat pump indoor units. This circuit board serves as the central control module that manages and monitors the operation of the indoor air handler, regulating system functions including temperature control, fan speeds, operating modes, and communication with the outdoor condenser unit.

Key Features:

• Genuine Mitsubishi Electric OEM replacement part
• Compact dimensions: 3.75 inches length x 2.75 inches width
• Includes installation instructions (SM79C833H01)
• Direct replacement for failed or malfunctioning control boards
• Compatible with multiple Mitsubishi GL-Series indoor units

This control board is essential for proper system operation and is commonly used in wall-mounted indoor units for both single-zone and multi-zone ductless heat pump systems. The board integrates electronic circuits that enable precise temperature management, airflow direction control, and system diagnostics. Professional installation by a licensed HVAC technician is recommended to ensure proper diagnosis and installation.

Cross-Reference Part Numbers: NTXWST18A112AA, NAXWST18A112AA, T354HBD, 53-1052KR, DM00N785B, 0652, SM76A291G01