Carrier HH19ZA950 Limit Switch 319852-301 Common culprits include voltage spikes

Common culprits include voltage spikes

Technicians typically look for furnace short-cycling

While often wired to stay energized during the compressor's off-cycle via a normally closed contactor

you can typically use a 370V or 440V capacitor as long as the 5 MFD capacitance is identical

Carrier HH19ZA950 Limit Switch 319852-301 Common culprits include voltage spikesThe Carrier HH19ZA950 Limit Switch is a critical OEM replacement part engineered for precise thermal management in Carrier furnaces, air handlers, and residential HVAC systems. This bi metal limit control is factory calibrated as a high limit safety, featuring a 150F open temperature and a 95F close temperature. Designed for automatic reset functionality, the HH19ZA950 effectively breaks the electrical circuit to the gas valve or heating element if