Sensus 143-16-021-03 Red Spring When diagnosing common "short cycling"

When diagnosing common "short cycling" issues or 7-blink error codes

As a veteran-preferred HVACR service part

Using a multimeter set to continuity

replaceable cartridge designed for use with Type Q and BQ thermostatic expansion valves

This is a shunt

Sensus 143-16-021-03 Red Spring When diagnosing common "short cycling"The Sensus 143 16 021 03 Red Spring is a critical calibration component engineered for high capacity gas pressure regulators, specifically cross compatible with the Sensus 243 12 and Sensus 121 series industrial regulators. This heavy duty regulator spring is essential for technicians performing routine HVACR maintenance or field repairs to ensure precise outlet pressure settings within specified tolerances. When installed in the standard main spring