Description
Carrier HH12ZB230 Automatic Limit Switch
The Carrier HH12ZB230 is a high-quality automatic reset limit switch engineered to protect furnaces and heating systems from unsafe operating temperatures. Designed as a genuine Carrier OEM replacement part, this limit switch monitors heat exchanger temperatures and automatically interrupts the burner circuit when temperatures exceed the safe threshold — then resets itself once conditions return to normal, minimizing downtime and service calls.
Key Features
- Automatic reset operation — restores normal function once temperature drops to a safe level
- Temperature range: 190°F to 230°F operating range
- Genuine Carrier OEM replacement part for reliable, manufacturer-approved performance
- Protects heat exchangers and furnace components from overheating damage
- Direct drop-in replacement for compatible Carrier furnace models
- Durable construction for long service life in residential and light commercial applications
Product Specifications
- Brand: Carrier
- Part Number: HH12ZB230
- Type: Automatic Reset Limit Switch
- Temperature Range: 190–230°F
- Reset Type: Automatic
Application
The HH12ZB230 limit switch is a critical safety component used in Carrier gas furnaces and heating systems. It senses excessive heat within the furnace cabinet and opens the control circuit to shut down the burner, preventing heat exchanger damage, equipment failure, and potential fire hazards. The automatic reset feature allows the switch to close again once temperatures fall back within the safe operating range, restoring normal furnace operation without manual intervention.
Always verify compatibility with your specific Carrier furnace model before installation. Consult your equipment documentation or contact a qualified HVAC technician for assistance.
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