624702R Nordyne DEFROST SENSOR
624702R Nordyne DEFROST SENSOR
🧊 Product Overview
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Part Number: 624702R
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Type: Defrost Temperature Sensor
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Function: Measures outdoor coil temperature to initiate and terminate defrost cycles
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Voltage Range: 18–32 VAC
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Frequency: 50/60 Hz
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Mounting: Stainless steel clip for 3/8″ tubing
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Material: Copper sensor body
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Weight: ~0.04 lbs
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Package Dimensions: 10″ × 12″ × 12″
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Vendor: Nordyne / Nortek Global HVAC
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The 624702R sensor helps prevent ice buildup on the outdoor coil, improving system efficiency and protecting components during cold-weather operation.
✅ Compatibility
The 624702R sensor is compatible with a wide range of Nordyne-manufactured heat pump systems, including:
| Brand | Likely Compatible Series / Models |
|---|---|
| Nordyne | PSH, PPG, R6GF Series packaged heat pumps |
| Intertherm | M1 Series heat pump-ready units |
| Miller | Mobile home heat pump systems |
| Frigidaire | FG7T, FG7S Series |
| Maytag | MGC Series |
| Broan | G7T Series |
| Gibson | G7SC Series |
| Tappan / Nutone / Kelvinator | Select heat pump models |
| Partners Choice | Private-labeled Nordyne units |
It pairs with defrost control boards like 920806 and 624704, and is often used in systems with demand-based defrost logic.
🛠️ Installation Notes
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Clip securely to 3/8″ suction line near outdoor coil
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Ensure clean contact surface for accurate temperature readings
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Replace if defrost cycles fail to initiate or terminate properly
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Ideal for technician kits servicing R-22 and R-410A heat pump platforms