Carrier HH18HA276 Limit Switch
The Carrier HH18HA276 Limit Switch is a critical safety component designed for high-temperature monitoring within HVAC furnace and air handler assemblies. This automatic reset limit switch features a cut-out temperature range of 225°F to 275°F, ensuring the system shuts down if heat exchanger temperatures exceed safe operating limits. As a genuine OEM Carrier replacement part, this switch provides the exact electrical specifications and mounting footprint required for field-service reliability. This high-temperature limit control facilitates a normally closed circuit that opens upon detecting thermal overload, protecting the blower motor and heat exchanger from damage. When troubleshooting furnace limit switch tripping, verifying the L225-275 manual reset or auto-reset functionality is essential for maintaining UL compliance and system safety. This HVAC safety switch is engineered for high-cycle durability and precise thermal sensing in residential and light commercial Carrier, Bryant, and Payne equipment.
Key Benefits- Precise Thermal Calibration: Factory-set for 225-275F furnace limit protection to prevent heat exchanger fatigue.
- Automatic Reset Functionality: Restores circuit continuity once temperatures drop below the safety threshold, reducing unnecessary service calls.
- OEM Compatibility: Guaranteed fit for specific Carrier and Bryant air handlers and gas furnaces, ensuring HVAC component reliability.
- Safety Compliance: Acts as a primary overtemperature protection mechanism to prevent fire hazards and equipment melting.
How do I know if the HH18HA276 is the correct limit switch for my unit?
Verify the temperature rating stamped on the side of your existing switch. If it matches the 225-275 degree range and the HH18HA276 part number, it is the correct technician-grade replacement.
Can I bypass this switch during troubleshooting?
Jumping a furnace high limit switch is strictly for temporary diagnostic purposes by a qualified technician. Operating the system without a functional limit switch is a significant safety risk.
What causes this limit switch to trip frequently?
Frequent tripping is usually indicative of restricted airflow, often caused by a clogged furnace filter, internal duct obstructions, or a failing blower motor.
Carrier HH18HA276 225-275F Auto Limit Switch
Notes
Item is Non Cancelable / Non Returnable
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Carrier HH18HA276 Limit Switch
The Carrier HH18HA276 Limit Switch is a critical safety component designed for high-temperature monitoring within HVAC furnace and air handler assemblies. This automatic reset limit switch features a cut-out temperature range of 225°F to 275°F, ensuring the system shuts down if heat exchanger temperatures exceed safe operating limits. As a genuine OEM Carrier replacement part, this switch provides the exact electrical specifications and mounting footprint required for field-service reliability. This high-temperature limit control facilitates a normally closed circuit that opens upon detecting thermal overload, protecting the blower motor and heat exchanger from damage. When troubleshooting furnace limit switch tripping, verifying the L225-275 manual reset or auto-reset functionality is essential for maintaining UL compliance and system safety. This HVAC safety switch is engineered for high-cycle durability and precise thermal sensing in residential and light commercial Carrier, Bryant, and Payne equipment.
Key Benefits- Precise Thermal Calibration: Factory-set for 225-275F furnace limit protection to prevent heat exchanger fatigue.
- Automatic Reset Functionality: Restores circuit continuity once temperatures drop below the safety threshold, reducing unnecessary service calls.
- OEM Compatibility: Guaranteed fit for specific Carrier and Bryant air handlers and gas furnaces, ensuring HVAC component reliability.
- Safety Compliance: Acts as a primary overtemperature protection mechanism to prevent fire hazards and equipment melting.
How do I know if the HH18HA276 is the correct limit switch for my unit?
Verify the temperature rating stamped on the side of your existing switch. If it matches the 225-275 degree range and the HH18HA276 part number, it is the correct technician-grade replacement.
Can I bypass this switch during troubleshooting?
Jumping a furnace high limit switch is strictly for temporary diagnostic purposes by a qualified technician. Operating the system without a functional limit switch is a significant safety risk.
What causes this limit switch to trip frequently?
Frequent tripping is usually indicative of restricted airflow, often caused by a clogged furnace filter, internal duct obstructions, or a failing blower motor.
Carrier HH18HA276 225-275F Auto Limit Switch
Notes
Item is Non Cancelable / Non Returnable
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Carrier HH18HA276 Limit Switch is a critical safety component designed for high-temperature monitoring within HVAC furnace and air handler assemblies. This automatic reset limit switch features a cut-out temperature range of 225°F to 275°F, ensuring the system shuts down if heat exchanger temperatures exceed safe operating limits. As a genuine OEM Carrier replacement part, this switch provides the exact electrical specifications and mounting footprint required for field-service reliability. This high-temperature limit control facilitates a normally closed circuit that opens upon detecting thermal overload, protecting the blower motor and heat exchanger from damage. When troubleshooting furnace limit switch tripping, verifying the L225-275 manual reset or auto-reset functionality is essential for maintaining UL compliance and system safety. This HVAC safety switch is engineered for high-cycle durability and precise thermal sensing in residential and light commercial Carrier, Bryant, and Payne equipment.
Key Benefits- Precise Thermal Calibration: Factory-set for 225-275F furnace limit protection to prevent heat exchanger fatigue.
- Automatic Reset Functionality: Restores circuit continuity once temperatures drop below the safety threshold, reducing unnecessary service calls.
- OEM Compatibility: Guaranteed fit for specific Carrier and Bryant air handlers and gas furnaces, ensuring HVAC component reliability.
- Safety Compliance: Acts as a primary overtemperature protection mechanism to prevent fire hazards and equipment melting.
How do I know if the HH18HA276 is the correct limit switch for my unit?
Verify the temperature rating stamped on the side of your existing switch. If it matches the 225-275 degree range and the HH18HA276 part number, it is the correct technician-grade replacement.
Can I bypass this switch during troubleshooting?
Jumping a furnace high limit switch is strictly for temporary diagnostic purposes by a qualified technician. Operating the system without a functional limit switch is a significant safety risk.
What causes this limit switch to trip frequently?
Frequent tripping is usually indicative of restricted airflow, often caused by a clogged furnace filter, internal duct obstructions, or a failing blower motor.
Carrier HH18HA276 225-275F Auto Limit Switch
Notes
Item is Non Cancelable / Non Returnable
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
