Trane CNT4821 Limit Switch 319852-301 While the W40102 is a

While the W40102 is a high-quality wrot copper fitting

Common indicators include excessive ice accumulation on the outdoor coil

This flexible condensate drain hose transitions liquid effluent from the secondary heat exchanger to the internal trap system

single-phase motor

Trane CNT4821 Limit Switch 319852-301 While the W40102 is aThe Trane CNT4821 Limit Switch is a high reliability safety component engineered for precision thermal monitoring in furnaces and air handlers. Featuring a 180F Auto Reset bi metal disc mechanism, this switch serves as a critical fail safe by opening the electrical circuit when internal plenum temperatures exceed safe operational limits. Once the temperature descends below the reset threshold (typically 160F), the bi metal disc automatically returns