simplifying field wiring and stock requirements

preventing coil damage and ensuring the reversing valve and auxiliary heat strips engage exactly when needed

preventing premature seal failure

making it a reliable choice for field-heavy retrofits and new installations

Serves as a visual indicator for electrostatic cell performance and maintenance needs

Carrier HK35AC002 Monitor Board 322838-752 simplifying field wiring and stockThe Carrier HK35AC002 Monitor Board is a critical electrical safeguard engineered for high efficiency three phase HVAC systems. As a genuine OEM relay phase monitor, this board provides real time detection of phase loss, phase reversal, and phase imbalance, preventing catastrophic motor failure and compressor burnout. Rated for 24 VAC control voltage, it features diagnostic LED indicatorstypically displaying a steady green for normal operation and