York S1-031-00878-003 Temperature Sensor

The York S1-031-00878-003 Temperature Sensor is a critical 10K Ohm Type III NTC thermistor engineered for precise thermal monitoring within commercial and residential York, Luxaire, and Coleman HVAC systems. Featuring a heavy-duty 144" lead wire, this OEM replacement sensor offers the length required for flexible routing to evaporator coils, condenser coils, or discharge air streams. As a genuine York temperature sensor, it ensures the control board receives accurate resistive input, preventing compressor cycling issues and optimizing defrost cycles. This HVAC temperature sensor with 144 lead is the standard specification for modern multi-stage equipment where standard 36-inch or 48-inch leads fall short. By providing real-time data to the SE control board, the S1-031-00878-003 maintains system efficiency and prevents component icing. For service technicians, utilizing this York replacement sensor eliminates the need for field-splicing, ensuring a moisture-resistant connection and long-term signal integrity in high-vibration environments.

Key Benefits:

• Extended Reach: The 144-inch lead provides ample length for large-cabinet units and remote coil mounting.
• 10K Ohm Precision: Matches York 10K Type III thermistor resistance curves for accurate temperature-to-voltage conversion.
• OEM Reliability: Direct fit for York S1-031-00878-003 ensures full compatibility with factory control logic and wiring harnesses.
• Durable Construction: Built to withstand the thermal cycling and moisture typical of air handlers and outdoor condensers.
• Plug-and-Play Integration: Standard connector facilitates rapid field replacement for reduced system downtime.

Common Questions:

How do I test the York S1-031-00878-003 sensor for accuracy?
To verify performance, set your multimeter to the Kilo-Ohms (k?) scale. At 77°F (25°C), this sensor should read approximately 10k Ohms. If the resistance values deviate significantly from the York resistance chart or indicate an open/short circuit, the sensor must be replaced.

Where is this sensor typically mounted in a York pakage unit?
The S1-031-00878-003 is versatile but is frequently used as a coil sensor or discharge air sensor. Its 12-foot lead is specifically designed to route from the internal coil headers back to the main control box.

Can I use this sensor on other brands like Coleman or Luxaire?
Yes, because York, Coleman, and Luxaire are all brands under Johnson Controls (JCI), the S1-031-00878-003 is a cross-compatible OEM part for these units, provided the part number matches your technical manual.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.