Once the internal link melts due to high heat

As a Single Pole Normally Open (SPNO) component

Utilizing a 3-inch insertion probe

Check the manufacturer date code on your A-4400 filter housing

and the part must be replaced to restore operation

Emerson Alco 027769 Valve Once the internal link meltsThe Emerson Alco 027769 expansion valve, specifically the 9761 5 model, is a high performance heat pump expansion valve designed for TCL and TCLE valve body configurations. This component features straight thru body flow with 3 8" ODF sweat inlet and 1 2" ODF sweat outlet connections, ensuring a precision fit in tight evaporator or condenser coils. Engineered for refrigerant flow control in residential and light commercial systems, it manages