Carrier HH12ZB140 Limit Switch 319825-402 Technicians typically look for intermittent

Technicians typically look for intermittent furnace error codes

ensuring seamless integration into existing service loops without extensive field modifications

This critical component is engineered to maintain precise water temperatures and prevent boiler overheating by interrupting power to the burner if the high-limit set point is exceeded

The MARS 92340 Relay is a heavy-duty DPDT 24V relay designed for demanding switching applications in residential and commercial HVAC units

Carrier HH12ZB140 Limit Switch 319825-402 Technicians typically look for intermittentMaintain peak safety and performance in your rooftop or residential furnace systems with the Carrier HH12ZB140 Limit Switch. This genuine OEM HVAC replacement part is a factory authorized L140F 40 limit switch, specifically engineered for high limit protection in Carrier, Bryant, and Payne air handlers and package units. As an auto reset limit switch with a SPST (Single Pole Single Throw) configuration, it is designed to interrupt the heating circuit