1. Product Overview
The York Control, Fan & Limit Snap Disc 230 Deg is a crucial component designed for commercial HVAC units. This genuine OEM (Original Equipment Manufacturer) part ensures the safe and efficient operation of your equipment by providing precise temperature control and limit functions. It is engineered to meet original part specifications, guaranteeing exact fitment and reliable performance as a direct replacement.
Figure 1: York Control, Fan & Limit Snap Disc 230 Deg. This image displays the snap disc component, featuring its metal mounting plate, electrical terminals, and the yellow label indicating model and temperature specifications.
2. Key Features
- Genuine OEM Part: Ensures authenticity and compatibility with York HVAC systems.
- Safety and Reliability: Designed to maintain high safety standards and consistent performance.
- Exact Fitment: Engineered to match original specifications for seamless replacement.
- Temperature Control: Functions as a fan and limit control, activating or deactivating based on temperature thresholds, specifically 230 degrees.
3. What's in the Box
Upon opening the packaging, you will find the following component:
- One (1) York Control, Fan & Limit Snap Disc 230 Deg (Model: S1-3L01-230)
4. Technical Specifications
| Attribute | Detail |
|---|---|
| Product Dimensions | 2 x 2 x 2 inches |
| Item Weight | 0.63 ounces |
| Model Number | S1-3L01-230 |
| Manufacturer | York |
| Temperature Rating | 230 Degrees Fahrenheit (as indicated by "230 Deg" in product title) |
| Part Type | Control, Fan & Limit Snap Disc |
5. Setup & Installation
Important Safety Information: Installation of this component should only be performed by a qualified HVAC technician. Ensure that the power supply to the HVAC unit is completely disconnected before beginning any installation or maintenance work. Failure to do so can result in serious injury or damage to the equipment.
- Power Disconnection: Locate the main power switch for your HVAC system and turn it OFF. Verify that no power is reaching the unit using a voltage tester.
- Access the Component: Open the access panel of your HVAC unit to locate the existing fan and limit control snap disc.
- Disconnect Wiring: Carefully note the wiring connections to the old snap disc. It is recommended to take a photograph or draw a diagram of the connections before disconnecting. Disconnect all wires from the old component.
- Remove Old Component: Unscrew or unclip the old snap disc from its mounting bracket.
- Install New Component: Position the new York Control, Fan & Limit Snap Disc (Model S1-3L01-230) into the mounting bracket. Secure it firmly using the appropriate screws or clips.
- Reconnect Wiring: Reconnect the wires to the new snap disc according to the diagram or photograph taken earlier. Ensure all connections are secure and properly insulated.
- Secure Access Panel: Close and secure the HVAC unit's access panel.
- Restore Power: Turn the main power switch for your HVAC system back ON.
- Test Operation: Monitor the HVAC unit's operation to ensure the new snap disc is functioning correctly, activating the fan and limit controls as expected based on temperature.
6. Operation
The York Control, Fan & Limit Snap Disc is an automatic thermal switch designed to respond to temperature changes within the HVAC system. Its primary functions are:
- Fan Control: The snap disc monitors the temperature in the furnace plenum or heat exchanger. When the temperature rises to a predetermined set point (e.g., for fan activation), the bimetallic disc "snaps" to close a circuit, turning on the furnace fan to distribute heated air.
- Limit Control: If the temperature continues to rise beyond a safe operating limit (e.g., 230 degrees Fahrenheit), the snap disc will "snap" to open a circuit, shutting down the burner to prevent overheating and potential damage to the furnace. This acts as a critical safety mechanism.
The snap disc operates automatically and does not require manual intervention during normal system operation. Its design ensures reliable and precise temperature-based switching.
7. Maintenance
The York Control, Fan & Limit Snap Disc is a sealed component and generally requires no routine maintenance. However, periodic inspection of the component and its connections is recommended as part of a comprehensive HVAC system maintenance schedule.
- Visual Inspection: During routine HVAC system checks, visually inspect the snap disc for any signs of physical damage, corrosion, or loose wiring connections.
- Cleanliness: Ensure the area around the snap disc is free from dust, debris, or obstructions that could affect its temperature sensing capabilities.
- Professional Check: It is advisable to have a qualified HVAC technician inspect the snap disc's functionality and calibration during annual system servicing.
If any issues are observed, or if the HVAC system exhibits unusual fan or heating behavior, consult a qualified technician for diagnosis and potential replacement.
8. Troubleshooting
This section provides guidance on common issues related to the fan and limit control. For complex problems, always consult a qualified HVAC technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Furnace fan not turning on | Faulty snap disc (fan control), clogged air filter, thermostat issue, motor problem. | Check air filter. Verify thermostat settings. If other components are fine, the snap disc may need replacement. Consult a technician. |
| Furnace overheating / frequently shutting off | Faulty snap disc (limit control), restricted airflow, dirty burners, oversized furnace. | Ensure all vents are open. Check for obstructions in ductwork. Clean burners if accessible. If problem persists, the limit control may be faulty. Professional diagnosis is required. |
| Fan runs continuously | Snap disc contacts stuck closed, thermostat fan setting on "ON", short circuit in wiring. | Check thermostat fan setting and set to "AUTO". If fan still runs, the snap disc may be faulty and require replacement. Inspect wiring for shorts. |
Note: Always disconnect power to the HVAC unit before attempting any inspection or repair.
9. Warranty and Support
As a genuine OEM part, the York Control, Fan & Limit Snap Disc (Model S1-3L01-230) is typically covered by the manufacturer's standard warranty for replacement parts. Specific warranty terms and duration may vary. Please retain your proof of purchase for warranty claims.
Customer Support:
For technical assistance, warranty inquiries, or to locate authorized service providers, please contact York customer support or visit their official website. Always refer to the official York documentation for the most accurate and up-to-date support information.
York Official Website: www.york.com (Note: This is a placeholder URL. Please refer to official product documentation for the correct support contact information.)
