Carrier HK35AC002 Relay Phase Monitor Board

Carrier HK35AC002 is a relay phase monitor board used to protect equipment from phase-related power faults. It is designed as an OEM replacement component for Carrier residential and commercial HVAC/R systems, monitoring incoming power phases and switching the relay to prevent operation under improper phase conditions. Installation should be performed by a qualified HVAC/R technician, as proper wiring and phase verification are required to ensure correct monitoring function. No hazardous materials are associated with this part, and it does not fall under EPA Section 608 or A2L refrigerant classification requirements.