624812R Nordyne Defrost Temp Sensor Thermistor

Normal Stocking Item. 

The Nordyne 624812R is an OEM defrost temperature sensor / thermistor used to measure the outdoor coil temperature during heat pump operation. When the coil begins to freeze, this sensor signals the control board to initiate a defrost cycle, preventing ice buildup and maintaining system efficiency.

• Identified as a Defrost Temp Sensor Thermistor

• Also listed as a Thermistor, MC Coil Temp for Nordyne HVAC equipment

⭐ Key Features

• OEM Nordyne part — ensures proper fit and system compatibility

• Temperature‑sensing thermistor for heat pump defrost control

• Accurate coil temperature monitoring for reliable defrost cycles

• Prevents coil icing, reduced airflow, and system shutdowns

• Direct replacement for part number 624812 (superseded by 624812R)

🔧 Function & Application

This thermistor is mounted on or near the outdoor coil and continuously monitors coil temperature. It helps the system:

• Detect frost or ice buildup

• Trigger defrost mode when needed

• Protect the compressor and coil

• Maintain heating efficiency in cold weather

Used in many Nordyne, Intertherm, Miller, and Revolv heat pump systems.

🏷️ Product Details

• Part Number: 624812R

• Type: Defrost temperature sensor / thermistor

• Application: Outdoor coil temperature monitoring

• Replaces: 624812

🛠️ Installation Notes

• Install in the same location as the original sensor

• Ensure proper thermal contact with the coil surface

• Must be connected to the defrost control board

• Recommended for installation by a qualified HVAC technician