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A functional Reznor high limit switch should show zero resistance (normally closed) at room temperature
With a technical on-timing range of 1-60 seconds and an off-timing range of 75-95 seconds
Comprehensive Installation Kit: Includes mounting brackets
Installing a higher-rated switch can lead to unsafe operating conditions
preserving the integrity of the heat exchanger by maintaining consistent internal temperatures
Carrier 50HJ442730 Sensor A functional Reznor high limitWhen you are troubleshooting a Carrier rooftop unit (RTU) or furnace showing a 6 flash code, the problem often traces back to a failed Carrier 50HJ442730 Hall Effect Sensor. This critical component serves as the electronic equivalent of a pressure switch, specifically designed to monitor the induced draft motor by detecting the magnetic field of the spinning impeller. Without a precise signal from this OEM replacement sensor, the control board cannot
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