Coleman 9530-3231 RV Air Conditioner Freeze Control Sensor

The Coleman 9530-3231 Freeze Control Sensor is a critical replacement component designed for Coleman Mach RV air conditioning systems. This coil sensor package monitors the evaporator coil temperature to prevent system freeze-ups and protect your AC compressor from damage.

Key Features:

• 10K Ohm NTC thermistor sensor for accurate temperature monitoring
• Triggers freeze protection when coil temperature drops to approximately 49°F
• Automatically switches compressor off and fan to high speed for rapid defrosting
• Features 1/4 inch spade terminal connectors for direct plug-and-play installation
• Equipped with 28-30 inch wire leads for flexible installation
• Operating temperature range of -40°F to 150°F
• Response time of less than 5 seconds

This sensor installs directly onto the evaporator coil fins (typically on the 2nd to 3rd row of copper tubes from the bottom) and connects to the AC control board. Compatible with Coleman Mach ceiling assembly models including 6797, 6799, 7330, 8330, 8530, 9330, and 9530. Essential for maintaining reliable RV air conditioning performance in all climates and preventing costly compressor damage from frozen coils.