Description
Goodman 10123518SP Manual Reset Limit Switch
The Goodman 10123518SP is an OEM manual-reset limit switch designed as a direct replacement for Goodman and Amana heating equipment. Featuring a distinctive blue reset button for easy identification, this safety device monitors temperature conditions within the furnace and interrupts the circuit when an over-temperature condition is detected. Unlike automatic-reset limit switches, the manual-reset design requires a technician to physically press the reset button before the system can resume normal operation — helping ensure the root cause of the fault is identified and corrected before restart.
Key Features
- Manual-reset operation with blue reset button for quick visual identification
- OEM Goodman replacement part — ensures proper fit and function
- Protects furnace heat exchanger and components from over-temperature damage
- Interrupts burner or blower circuit upon high-limit activation
- Requires manual reset after trip, promoting safe service practices
- Direct replacement for compatible Goodman and Amana furnace models
Application
This limit switch is intended for use in Goodman and Amana gas furnaces as a safety high-limit control. Always verify compatibility with the specific furnace model number before installation. Consult the equipment service manual for proper wiring, mounting location, and temperature rating specifications.
Installation Notes
- Verify model compatibility before ordering
- Disconnect power before servicing or replacing limit switches
- Investigate and correct the cause of any limit trip before resetting
- Use only qualified HVAC technicians for installation and service







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