The A19AAC-9 is technically identical to the A19AAC-9C model

allowing for a seamless drop-in installation without modification to existing drive housing

It features EasySelect jumper settings for system configuration and 24V operation with a 5

though it can often be added as an option (suffix -VB) if your specific application requires vacuum protection

Carrier HY84HA090 Terminal Board 319847-401 The A19AAC-9 is technically identicalThe Carrier HY84HA090 Terminal Board is a high grade HVAC control board designed for seamless signal routing and power distribution in commercial and industrial climate control systems. This OEM terminal board provides a centralized, organized junction for low voltage and line voltage wiring, ensuring secure and reliable electrical connections. Engineered with durable, high density materials to withstand the rigors of heavy duty applications, the