The unit features internal DIP switches that allow you to select between uni-directional and bi-directional (compound) ranges at the time of installation

As a direct replacement for 28237

While technically compatible with frame size

Enhanced Durability: Engineered to withstand the thermal and physical stresses of continuous-duty air handling cycles

and adapter harness to simplify field installation

Carrier HY84DA024 Terminal Block R-407A The unit features internal DIPThe Carrier HY84DA024 Terminal Block is a high grade OEM replacement part designed for precision electrical routing within commercial HVAC systems and residential air handlers. Engineered to maintain the integrity of low voltage control circuits and high voltage power feeds, this terminal board serves as the centralized connection point for thermostat wiring, fan motors, and system sensors. As a genuine Carrier replacement component, the HY84DA024