Carrier 338085-758 Switch
The Carrier 338085-758 Limit Switch is a critical safety component designed for precise temperature regulation within high-efficiency furnace systems. This L210-20F limit switch is engineered to monitor heat exchanger temperatures, effectively tripping to interrupt the burner circuit if the internal temperature exceeds the 210-degree Fahrenheit fixed setting. It features a 20-degree differential for automatic reset, ensuring the blower fan continues to circulate air to dissipate residual heat before the unit attempts to re-ignite. Constructed for high-cycle reliability, this OEM Carrier furnace part serves as a direct replacement for failing thermal sensors that cause premature short-cycling or system lockouts. For contractors performing HVAC preventative maintenance, installing this factory-specified switch ensures the heat exchanger operates within the designated safety envelope, preventing thermal stress and protecting the primary control board. Ensure correct furnace limit switch location and secure mounting to maintain accurate thermal sensing and system uptime.
Key Benefits for Technicians- Fixed Temperature Accuracy: Factory-calibrated for a 210°F open temperature to maintain strict safety protocols.
- Automatic Reset Logic: Features a 20°F differential for reliable HVAC system reset without manual intervention.
- Direct OEM Compatibility: Specifically engineered for Carrier, Bryant, and Payne air handlers and furnaces.
- Enhanced Safety Protection: Prevents heat exchanger overheating, mitigating the risk of component warping or fire hazards.
- Durable Construction: Built to withstand high-temperature fluctuations and vibration common in modern combustion chambers.
What causes a furnace limit switch to trip repeatedly?
Repeated tripping usually indicates restricted airflow, often due to a clogged air filter, undersized ductwork, or a failing blower motor assembly rather than a faulty switch.
How do I verify if the 338085-758 is functioning correctly?
Use a multimeter to check for continuity across the terminals. The switch should remain closed under normal operating temperatures and open when the 210°F threshold is reached.
Can this L210-20F switch be used in other furnace brands?
While the technical specifications are standard, this part number is optimized for Carrier-produced equipment. Always verify the mounting bracket footprint and terminal orientation before installation.
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.
Original: $108.63
-65%$108.63
$38.02Carrier 338085-758 Switch
The Carrier 338085-758 Limit Switch is a critical safety component designed for precise temperature regulation within high-efficiency furnace systems. This L210-20F limit switch is engineered to monitor heat exchanger temperatures, effectively tripping to interrupt the burner circuit if the internal temperature exceeds the 210-degree Fahrenheit fixed setting. It features a 20-degree differential for automatic reset, ensuring the blower fan continues to circulate air to dissipate residual heat before the unit attempts to re-ignite. Constructed for high-cycle reliability, this OEM Carrier furnace part serves as a direct replacement for failing thermal sensors that cause premature short-cycling or system lockouts. For contractors performing HVAC preventative maintenance, installing this factory-specified switch ensures the heat exchanger operates within the designated safety envelope, preventing thermal stress and protecting the primary control board. Ensure correct furnace limit switch location and secure mounting to maintain accurate thermal sensing and system uptime.
Key Benefits for Technicians- Fixed Temperature Accuracy: Factory-calibrated for a 210°F open temperature to maintain strict safety protocols.
- Automatic Reset Logic: Features a 20°F differential for reliable HVAC system reset without manual intervention.
- Direct OEM Compatibility: Specifically engineered for Carrier, Bryant, and Payne air handlers and furnaces.
- Enhanced Safety Protection: Prevents heat exchanger overheating, mitigating the risk of component warping or fire hazards.
- Durable Construction: Built to withstand high-temperature fluctuations and vibration common in modern combustion chambers.
What causes a furnace limit switch to trip repeatedly?
Repeated tripping usually indicates restricted airflow, often due to a clogged air filter, undersized ductwork, or a failing blower motor assembly rather than a faulty switch.
How do I verify if the 338085-758 is functioning correctly?
Use a multimeter to check for continuity across the terminals. The switch should remain closed under normal operating temperatures and open when the 210°F threshold is reached.
Can this L210-20F switch be used in other furnace brands?
While the technical specifications are standard, this part number is optimized for Carrier-produced equipment. Always verify the mounting bracket footprint and terminal orientation before installation.
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.
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Description
The Carrier 338085-758 Limit Switch is a critical safety component designed for precise temperature regulation within high-efficiency furnace systems. This L210-20F limit switch is engineered to monitor heat exchanger temperatures, effectively tripping to interrupt the burner circuit if the internal temperature exceeds the 210-degree Fahrenheit fixed setting. It features a 20-degree differential for automatic reset, ensuring the blower fan continues to circulate air to dissipate residual heat before the unit attempts to re-ignite. Constructed for high-cycle reliability, this OEM Carrier furnace part serves as a direct replacement for failing thermal sensors that cause premature short-cycling or system lockouts. For contractors performing HVAC preventative maintenance, installing this factory-specified switch ensures the heat exchanger operates within the designated safety envelope, preventing thermal stress and protecting the primary control board. Ensure correct furnace limit switch location and secure mounting to maintain accurate thermal sensing and system uptime.
Key Benefits for Technicians- Fixed Temperature Accuracy: Factory-calibrated for a 210°F open temperature to maintain strict safety protocols.
- Automatic Reset Logic: Features a 20°F differential for reliable HVAC system reset without manual intervention.
- Direct OEM Compatibility: Specifically engineered for Carrier, Bryant, and Payne air handlers and furnaces.
- Enhanced Safety Protection: Prevents heat exchanger overheating, mitigating the risk of component warping or fire hazards.
- Durable Construction: Built to withstand high-temperature fluctuations and vibration common in modern combustion chambers.
What causes a furnace limit switch to trip repeatedly?
Repeated tripping usually indicates restricted airflow, often due to a clogged air filter, undersized ductwork, or a failing blower motor assembly rather than a faulty switch.
How do I verify if the 338085-758 is functioning correctly?
Use a multimeter to check for continuity across the terminals. The switch should remain closed under normal operating temperatures and open when the 210°F threshold is reached.
Can this L210-20F switch be used in other furnace brands?
While the technical specifications are standard, this part number is optimized for Carrier-produced equipment. Always verify the mounting bracket footprint and terminal orientation before installation.
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.
