Mitsubishi Electric M21ECW397 Cable Set 321702-401 20" WC set point ensures

20" WC set point ensures the system operates strictly within manufacturer specifications for HVAC safety switches

Relying on original PENN service parts ensures critical compatibility with V46AA-1C

5-5 ton R410A air conditioners and heat pumps

meeting the original factory specifications for 100109434

Ensure your wiring harness and transformer (minimum 40 VA) are correctly sized for the total system load

Mitsubishi Electric M21ECW397 Cable Set 321702-401 20" WC set point ensuresThe Mitsubishi Electric M21ECW397 is a critical MN Converter Cable Set designed specifically for field technicians performing high level diagnostics on M Series and P Series systems. As the direct replacement for M21EC0397, this kit is required for interfacing with the PAC USCMS MN 1 Maintenance Tool. This comprehensive set contains five distinct conversion cables (M21EC1397, M21EC2397, M21EC3397, M21EC4397, and M21EC5397), allowing for a USB UART