Copeland 918-0518-00 Crankcase Heater Els PW 17895 What are terminals 4 and

What are terminals 4 and 6 used for

it provides self-regulating heat output

The 668793R is the official technical update for the 668793

ensuring reliable pull-in and drop-out voltages

preventing system hunting and maintaining optimal control loop stability

Copeland 918-0518-00 Crankcase Heater Els PW 17895 What are terminals 4 andThe Copeland 918 0518 00 Crankcase Heater is a critical 120V insertion style heating element designed for Copeland semi hermetic compressors. To prevent liquid refrigerant migration and ensure reliable oil lubrication during cold start cycles, this 200 watt heater maintains a precise temperature differential within the compressor oil sump. Engineering specifications include a 3 1 2 inch diameter insertion probe, matched with a 33 inch conduit length