Carrier HH18HA199 Limit Switch 322838-753 controlled environment is essential to

controlled environment is essential to preserve functionality before field deployment

Manual Flushing: Accessible range spring allows for manual flushing to clear sediment without altering the calibrated pressure settings

For technicians troubleshooting a Carrier Error Code 31

Always verify your wiring diagram for phase-to-phase compatibility

Carrier HH18HA199 Limit Switch 322838-753 controlled environment is essential toThe Carrier HH18HA199 Limit Switch is a critical safety component designed for high temperature monitoring in HVAC induction combustion furnaces and residential heating systems. This genuine OEM replacement part is calibrated to trigger at a fixed 200 degree opening temperature, automatically interrupting the electrical circuit via its SPST (Single Pole Single Throw) configuration to prevent heat exchanger damage or hazardous rollout conditions.