Skin oils can cause hot spots on the silicon carbide surface

As a critical multi-function control

this is the VAL8210 valve body only

Structural Durability: Constructed from heavy-duty materials designed to resist high-heat oxidation and stress

Mitsubishi Electric E12A54444 Board 323080-701 Skin oils can cause hotThe Mitsubishi Electric E12A54444 Power PC Board is the master control unit engineered for high performance HVFD air conditioning and heat pump systems. As an OEM replacement part, this inverter power board coordinates critical electrical activities between the compressor and fan motors to ensure optimal energy efficiency. Built to withstand demanding environments, the E12A54444 control board operates across a wide voltage range of 110VAC to 240VAC