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A functional Reznor high limit switch should show zero resistance (normally closed) at room temperature
you know that retrofitting temperature controls often requires more than just the new component
Common issues include restricted airflow from dirty HVAC filters
With a technical on-timing range of 1-60 seconds and an off-timing range of 75-95 seconds
increasing durability against voltage spikes
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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