Carrier HH79NZ101 Thermister 340155-7024 If your 120VAC to the

If your 120VAC to the fan is present but the gas valve isn't receiving 24VAC

ensuring balanced voltage across the electrodes

the panel triggers a 12VDC output to an external siren while simultaneously activating an auxiliary dry contact for central station monitoring or remote phone dialers

meaning it will return to the closed position upon loss of power to prevent unintended heating or cooling

verify the water flow rate and actual tank temperature before replacing the sensor

Carrier HH79NZ101 Thermister 340155-7024 If your 120VAC to theThe Carrier HH79NZ101 Thermister is a high precision HVAC temperature sensor engineered for critical environmental monitoring in residential and commercial climate control systems. As an essential passive component, this genuine OEM Carrier part utilizes advanced resistive technology to provide accurate real time data to the system's control board. Specifically designed for suction line applications or air handler monitoring, the HH79NZ101 operates as