Common Questions & Technical Support What is the maximum inlet pressure for the 1/4" orifice

31-inch diameter with a calibrated scale of 0 to 100

The Carrier HH12ZB170 Limit Switch is a critical safety component designed for precise thermal monitoring in high-efficiency furnace and air handling units

Engineered for continuous operation

Lockout Low

Carrier HK61EA017 Circuit Board 321702-401 Common Questions & Technical SupportThe Carrier HK61EA017 is a genuine OEM replacement furnace control board designed specifically for systems utilizing X 13 ECM motors. As a veteran technician, you know that precise airflow management is critical for system efficiency; this fan control circuit board serves as the direct HK61EA012 replacement, ensuring total compatibility with existing wiring harnesses and 24V control logic. Engineered for Carrier, Bryant, and Payne furnaces, this board