Danfoss 120Z0388 Heater 30067439-890 resistance should drop between 300

resistance should drop between 300 and 1000 ohms

While it features a standard 1/2" shaft and common mounting patterns

Constructed to meet rigorous factory authorized specifications

What is the purpose of the LEDs on the board

Danfoss 120Z0388 Heater 30067439-890 resistance should drop between 300The Danfoss 120Z0388 Surface Sump Heater is a critical component for maintaining oil temperature in HVACR refrigeration compressors during off cycles. Operating at 24V AC DC with an 80W power rating, this crankcase heater prevents refrigerant migration and subsequent slugging during startup. Specifically engineered for compatibility with Danfoss SM, SY, and SZ series scroll compressors, this surface mounted heater ensures that the lubricant remains at