OEM Carrier DCV Economizer Control Board Kit HH63AW001 for Model TCHC1850HE403351

This is a genuine OEM Carrier Factory Authorized Part — the DCV Economizer Control Board Kit (part# HH63AW001), engineered as the factory-specified replacement for the Carrier TCHC1850HE403351 commercial rooftop unit. The economizer control board is the brain of your unit's free-cooling system: it continuously monitors outdoor air conditions via CO₂ and enthalpy sensors, modulates the damper actuator, and decides when outside air is suitable for reducing mechanical cooling load. When this board fails, common symptoms include economizer fault codes, a damper stuck open or closed, loss of demand-controlled ventilation (DCV) response, or the unit falling back entirely on mechanical cooling — driving up energy costs and potentially triggering building code compliance issues.

• OEM Part Number: HH63AW001 | Cross-Reference: W7212A1017 | 120V / 60Hz | Dimensions approx. 4" × 4" × 2" | Weight: 1 lb | All inputs Class 2
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part built to exact factory tolerances. Third-party boards may lack full DCV logic compatibility, risking mismatched sensor thresholds, damper hunting, or non-compliance with ASHRAE 62.1 ventilation standards.
• Install Difficulty: 4/5 — Commercial rooftop board replacement. Requires disconnecting and labeling all low-voltage Class 2 wiring, actuator connectors, and sensor leads. Tools needed: insulated screwdrivers, needle-nose pliers, multimeter, and wiring diagram (pull from unit access panel). Recommend verifying sensor calibration after installation. Licensed commercial HVAC technician strongly advised.
• Warranty: 1-year OEM factory warranty on parts. Ships same business day from our warehouse. Carefully inspect all wiring harnesses for damage before installation to avoid repeat board failure.

Compatibility: Designed for the Carrier TCHC1850HE403351 commercial packaged rooftop unit equipped with a demand-controlled ventilation (DCV) economizer. Verify your existing board's part number against HH63AW001 or cross-reference W7212A1017 before ordering. Not sure if this is the right part? Our HVAC parts specialists confirm fitment before you buy — contact us today and ship same day.