Panasonic CWA50C3250 Complete Temperature Sensor Assembly

Product Description

The PANASONIC CWA50C3250 is a complete temperature sensor assembly designed as a direct OEM replacement for Panasonic mini split systems. This sensor monitors return air or coil temperature and feeds real-time data to the indoor unit control board, allowing the system to maintain accurate setpoints and trigger fault protection as needed. It is a plug-and-play component intended for installation by licensed HVAC technicians during routine maintenance or troubleshooting of an E1 error code on compatible Panasonic mini split indoor units.

This sensor assembly is used in residential mini split indoor air handler units. The E1 designation indicates this is the complete sensor harness or thermistor assembly associated with the E1 diagnostic fault on affected units. When the control board detects an open or shorted sensor signal, it will typically lock out operation and display the fault code. Replacing the CWA50C3250 restores proper sensor feedback to the board and clears the fault condition. Compatible models include S18MM2U6, S09MM2U6, S07MM2U6, S12MM2U6, and S15MM2U6.

Key Features

• Direct OEM replacement sensor assembly for Panasonic mini split indoor units
• Addresses E1 fault code caused by open or shorted thermistor signal
• Complete assembly for straightforward swap-out without splicing or fabrication
• Compatible with multiple Panasonic S-series indoor unit models
• Restores accurate temperature sensing for proper system operation and fault protection

Compatibility

Compatible with Panasonic mini split indoor units: S18MM2U6, S09MM2U6, S07MM2U6, S12MM2U6, and S15MM2U6.

Installation Notes

This component should be installed by a qualified HVAC technician. Disconnect power to the indoor unit at the breaker and confirm voltage is absent before accessing the control compartment or removing any electrical connectors. Handle the thermistor element carefully to avoid damaging the sensing element or lead wires. Refer to the unit service manual for connector location and proper routing of the sensor harness before reassembling the cover panels.