Carrier 331709-789 TXV Kit 322838-752 Field sensitivity testing can be

Field sensitivity testing can be performed using a calibrated aerosol smoke tester or the internal reed switch with a magnet to verify circuit activation

It must be energized at least 24 hours prior to initial system startup or after long shutdowns to boil off accumulated refrigerant

While the max multiple load is 500

a stuck internal diaphragm

Carrier 331709-789 TXV Kit 322838-752 Field sensitivity testing can beEnsure peak evaporator performance with the Carrier 331709 789 TXV Kit, a factory authorized solution designed for 3 to 3. 5 ton residential and light commercial systems. This OEM thermostatic expansion valve is highly compatible with R410A refrigerant, utilizing an internal check valve to manage liquid flow effectively during cooling cycles. Engineered to replace outdated part numbers like 331709 772 and 1185501, this TXV replacement kit features a 3