Pay in 4 interest-free payments of $7.70 Learn more
Ships within 48 hours · Estimated delivery Sep 12 - Sep 17
verifying crankcase heater resistance and voltage compatibility is critical before installation to ensure the long-term reliability of the refrigeration circuit and compressor lubrication system
allowing for variable voltage and frequency control in motors
extending the intervals between preventative maintenance cleanings
Smith SNA series models
This HVAC ignition safety part is essential for resolving common furnace short cycling issues and ignition lockout codes
Tecumseh K90-27 Relay 321894-706 verifying crankcase heater resistance andThe Tecumseh K90 27 Relay is a mission critical overload protector relay designed for high performance hermetic compressors, specifically the AKA4476YXA and AKA4482YXA models. As an OEM spec compressor start relay and thermal protector, this component monitors current flow to prevent motor burnout during locked rotor conditions or excessive thermal spikes. For technicians servicing 115V or 208 230V systems, this overload protector relay ensures