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An infinite resistance or "OL" reading under these conditions typically indicates a defective switch or improper physical activation by the vent pipe
If the vent is clear
Efficient Snap-On Design: Simplifies the compressor installation process by eliminating complex bolt-and-nut configurations
verify your actual clearance
Lennox 27W13 Pressure Switch Els PW 17895 An infinite resistance or "OL"The Lennox 27W13 High Pressure Switch (OEM Part #100087 08) is a critical safety component engineered for precise refrigerant pressure monitoring in high performance HVAC systems. This SPST normally closed (N. C.) switch is designed to protect the compressor and refrigeration circuit by interrupting operation when head pressure reaches 550 PSIG. To maintain system uptime without manual intervention, it features an auto reset function that re engages
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