The RA100Z annunciator is a two-wire polarized device

The filter drier should be replaced immediately to protect the compressor from acid buildup

protecting your motor and driven equipment from catastrophic bearing failure

Is the 1014425 the correct replacement for the 1012588

Nordyne 663865R Service Valve Els PW 17895 The RA100Z annunciator is aAs a veteran tech, you know that a leaking or seized service valve isn't just a minor nuisance; it is a system wide failure point. The Nordyne 663865R Service Valve is a 7 8" ODF suction service valve engineered for professional grade reliability in residential and light commercial cooling systems. This HVAC suction valve replacement is the direct supersession for the older Nordyne 663865 model, featuring a captive stem design that prevents the stem