1. Product Overview
This kit provides essential replacement components for Whirlpool dryers, specifically a heater element and a high-limit thermostat with a thermal fuse. These parts are designed to restore proper heating function and thermal safety to your appliance. The kit includes one DE838 dryer heating element and one N197 high-limit thermostat with thermal fuse.
2. Product Components
- DE838 Dryer Heating Element: This element is rated at 5400 Watts, 240 Volts, and features two 5/16-inch male terminals. It is a direct replacement for original part 279838.
- N197 High Limit Thermostat and Thermal Fuse: This component includes a 325°F thermal fuse and an L250-80°F limit thermostat. It is crucial for preventing overheating within the dryer.

Image 1: The Generic Dryer Heater and Thermostat Kit, showing both the DE838 heating element and the N197 thermostat/fuse assembly.
3. Compatibility
This kit is designed as a replacement for various Whirlpool dryer models and is compatible with original part numbers including, but not limited to: 279838, 279816, 3403585, PS334313, PS334299, AP3094254, and AP3094244. Please verify your dryer's model number and existing part numbers to ensure compatibility before installation.
4. Installation and Setup
Safety Precautions:
- Always disconnect power to the dryer before attempting any repairs or installations.
- Wear appropriate personal protective equipment, such as gloves, to prevent injury.
- If you are unsure about any step, consult a qualified appliance technician.
Installation Steps:
- Ensure the dryer is unplugged from the electrical outlet.
- Access the heating element and thermostat assembly compartment of your dryer, typically located at the rear or bottom. Refer to your dryer's specific service manual for exact access procedures.
- Carefully disconnect the wiring from the old heating element and thermostat. Note the position of each wire for correct re-connection.
- Remove the old heating element and thermostat assembly.
- Install the new DE838 heating element and N197 thermostat/fuse in the reverse order of removal. The design allows for direct replacement without the need for splicing or re-wiring.
- Secure all components and re-connect the wiring, ensuring all connections are firm and correct.
- Reassemble the dryer panels.
- Plug the dryer back into the electrical outlet.
- Test the dryer's heating function to confirm proper operation.
5. Operating Principles
The DE838 heating element generates the heat required for drying clothes. The N197 high-limit thermostat and thermal fuse act as safety devices. The thermostat monitors the temperature within the dryer and cycles the heating element on and off to maintain the desired temperature. The thermal fuse is a one-time safety device that will permanently open if the dryer's internal temperature exceeds a safe limit (325°F), preventing potential fire hazards. If the thermal fuse blows, it indicates a significant issue that must be addressed before replacing the fuse and resuming dryer operation.
6. Maintenance
These components are designed for durability and typically do not require routine maintenance. However, regular cleaning of your dryer's lint filter and exhaust vent is crucial for efficient operation and to prevent overheating, which can prematurely wear out heating elements and trip thermal fuses. Inspect the wiring connections periodically for any signs of wear or corrosion.
7. Troubleshooting
If your dryer is not heating after replacing these parts, consider the following:
- No Heat: Double-check all electrical connections to the heating element and thermostat. Ensure the dryer is receiving proper voltage. A blown thermal fuse (N197) will result in no heat; investigate the cause of the original fuse failure (e.g., clogged vent).
- Overheating: If the dryer overheats and then stops, the high-limit thermostat (part of N197) may be tripping. This often indicates restricted airflow due to a clogged lint filter or exhaust vent.
- Intermittent Heating: Loose connections or a faulty cycling thermostat (not included in this kit, but part of the dryer's control system) could cause intermittent heating.
For complex issues, it is recommended to consult a professional appliance repair technician.
8. Specifications
| Manufacturer | THS |
| Part Number | riv4208 |
| Item Model Number | THS4208 |
| Item Weight | 1 pound |
| Product Dimensions | 1 x 1 x 1 inches |
| Color | Black |
| Material | Plastic (for thermostat housing) |
| Voltage (Heater) | 240 Volts |
| Wattage (Heater) | 5400 Watts |
| Thermal Fuse Limit | 325°F |
| Limit Thermostat | L250-80°F |
9. Warranty Information
This product comes with a 1-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from improper installation, misuse, abuse, or unauthorized modifications. Please retain your proof of purchase for warranty claims.
10. Support and Contact
For technical assistance, warranty claims, or further inquiries, please contact the seller through the platform where the purchase was made. Always provide your product model number (THS4208) and proof of purchase when seeking support. For complex installation or repair issues, it is advisable to consult a certified appliance technician.