3L01-200 Copeland Comfort Control (White Rodgers) L200-40F
3L01-200 Copeland Comfort Control (White Rodgers) L200-40F
The 3L01-200 Snap Disc Limit Switch (White-Rodgers / Copeland Comfort Control) is an automatic reset temperature safety control designed to protect HVAC, heating, and refrigeration equipment from excessive temperatures. Featuring a 200°F fixed cut-out temperature and 160°F fixed cut-in temperature, this open-on-rise limit switch interrupts the electrical circuit when unsafe temperatures are reached and automatically resets after cooling, helping prevent damage to critical system components.
Cross-Reference
- 3L01-200
- 3L01200
- L200-40F
- 60T11-610016
- White-Rodgers 3L01-200
- Copeland Comfort Control 3L01-200
Direct OEM
White-Rodgers 3L01-200
Compatible Brands
- White-Rodgers
- Emerson
- Copeland
- York
- Coleman
- Luxaire
- Goodman
- Universal HVAC Applications
- Refrigeration Equipment
Application
Used in HVAC and refrigeration systems to:
- Protect equipment from overheating
- Open the control circuit at 200°F
- Automatically reset at 160°F
- Safeguard compressors, heaters, motors, and controls
- Prevent excessive temperature damage
- Maintain safe operating conditions
Related Components
- Snap Disc Limit Switch
- High Limit Control
- Fan Switch
- Fan & Limit Control
- Blower Relay
- Furnace Control Board
- Transformer
- Temperature Sensor
- Compressor Contactor
Technician Notes
The 3L01-200 is an automatic reset, open-on-rise temperature limit switch. Under normal conditions, the contacts remain closed and open when the sensing surface reaches 200°F. Once temperatures fall to approximately 160°F, the switch automatically resets and restores circuit operation.
Repeated limit trips often indicate restricted airflow, dirty heat exchangers, plugged filters, failing blower motors, dirty coils, excessive equipment load, or inadequate ventilation. Correct the underlying overheating condition before replacing the switch.
Common Symptoms of Failure
- Furnace or equipment shuts down on high limit
- Open safety circuit fault
- Intermittent operation
- Repeated temperature trips
- System lockout conditions
- No continuity through switch contacts
- Heater or compressor protection faults
- Failure to restart properly after overheating
Installation Tips
- Disconnect electrical power before servicing.
- Verify temperature ratings match the original component.
- Confirm switch action is "Open on Rise."
- Mount securely against the original sensing surface.
- Inspect terminals for corrosion or overheating.
- Check airflow and operating temperatures before replacement.
- Verify continuity after installation.
- Test the system through a complete operating cycle.
Recommended Inspection Items
- Blower motor operation
- Air filter condition
- Heat exchanger cleanliness
- Evaporator and condenser coils
- Electrical terminals
- Wiring harness condition
- Control board diagnostics
- Equipment temperature rise
- Ventilation and airflow restrictions
Controls, Temperature, 160 degrees F Fixed Cut-in Temperature, 200 degrees F Fixed Cut-out Temperature, Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (60T11-610016)
