Description
Goodman B1370188 AUTO Limit Switch Overview
The Goodman B1370188 is a factory-specified automatic limit switch engineered to protect furnace heat exchangers and internal components from dangerous overheating conditions. Designed as a direct OEM replacement for compatible Goodman and Amana heating systems, this limit switch provides reliable high-temperature cutout performance to keep your equipment operating safely and efficiently.
How It Works
The AUTO (automatic) limit switch continuously monitors the air temperature inside the furnace plenum or heat exchanger area. When temperatures reach the upper threshold, the switch opens the circuit to shut down the burner, preventing heat exchanger damage or fire hazards. Once temperatures fall back to the lower threshold, the switch automatically resets — restoring normal furnace operation without requiring manual intervention.
Key Specifications
- Part Number: B1370188
- Brand: Goodman
- Switch Type: AUTO (Automatic Reset)
- Temperature Range: 140°F – 170°F
- Opens (Cutout) At: 170°F
- Closes (Reset) At: 140°F
- Application: Goodman and Amana compatible furnace systems
Features & Benefits
- Automatic reset eliminates the need for manual intervention after a high-limit event
- OEM-quality construction ensures proper fit and reliable long-term performance
- Protects heat exchangers and furnace components from thermal damage
- Helps maintain system efficiency by quickly restoring normal operation
- Direct replacement for failed or degraded limit switches in compatible Goodman units
Installation Notes
This limit switch is intended as an OEM replacement part for qualified HVAC technicians. Always verify compatibility with your specific Goodman or Amana furnace model before installation. Disconnect all power to the unit prior to servicing.
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