Lennox 11G55 Limit Switch
The Lennox 11G55 Limit Switch is a critical safety component designed for precise thermal regulation in high-efficiency HVAC equipment. This 100-130F automatic reset limit ensures that burner assemblies or heat exchangers do not exceed safe operating temperatures. Often listed under the interchangeable part number 11G5501, this sensor features a high-sensitivity bimetal disc that breaks the electrical circuit upon reaching its 130°F cutout point and automatically closes once temperatures stabilize back at 100°F. For service technicians, the 11G55 provides a reliable solution for Lennox furnace troubleshooting involving frequent tripping or faulty cycling. Engineered to meet strict OEM specifications, this Lennox replacement part ensures system integrity and maintains strict airflow temperature monitoring. Its robust construction and standardized mounting flange facilitate a rapid HVAC limit switch replacement, reducing downtime on the job site and ensuring the heating system operates within its designed thermal profile.
Key Benefits
- Precise Thermal Calibration: Calibrated for a 130°F cutout and 100°F differential to prevent heat exchanger stress.
- Automatic Reset Functionality: Eliminates the need for manual intervention after a temporary temperature spike, restoring system operation once cooled.
- OEM Compatibility: Replaces Lennox 11G5501 and fits various Lennox G-series furnace models with exact fitment.
- Critical Safety Compliance: Acts as a reliable fail-safe to prevent overheating conditions in residential heating systems.
Common Questions
How do I determine if my 11G55 limit switch is faulty?
Technicians should check for continuity across the terminals when the switch is cold. If the circuit remains open at room temperature or fails to break the circuit at 130°F, the bimetal disc has likely fatigued and requires a direct replacement.
Are the 11G55 and 11G5501 parts interchangeable?
Yes, Lennox 11G55 and 11G5501 are the same physical component and are electronically and mechanically identical.
What causes this limit switch to trip frequently?
Frequent tripping is often a symptom of restricted airflow, such as a clogged furnace filter, blocked return ducts, or a failing blower motor, rather than a defect in the switch itself.
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: $28.92
-65%$28.92
$10.12Lennox 11G55 Limit Switch
The Lennox 11G55 Limit Switch is a critical safety component designed for precise thermal regulation in high-efficiency HVAC equipment. This 100-130F automatic reset limit ensures that burner assemblies or heat exchangers do not exceed safe operating temperatures. Often listed under the interchangeable part number 11G5501, this sensor features a high-sensitivity bimetal disc that breaks the electrical circuit upon reaching its 130°F cutout point and automatically closes once temperatures stabilize back at 100°F. For service technicians, the 11G55 provides a reliable solution for Lennox furnace troubleshooting involving frequent tripping or faulty cycling. Engineered to meet strict OEM specifications, this Lennox replacement part ensures system integrity and maintains strict airflow temperature monitoring. Its robust construction and standardized mounting flange facilitate a rapid HVAC limit switch replacement, reducing downtime on the job site and ensuring the heating system operates within its designed thermal profile.
Key Benefits
- Precise Thermal Calibration: Calibrated for a 130°F cutout and 100°F differential to prevent heat exchanger stress.
- Automatic Reset Functionality: Eliminates the need for manual intervention after a temporary temperature spike, restoring system operation once cooled.
- OEM Compatibility: Replaces Lennox 11G5501 and fits various Lennox G-series furnace models with exact fitment.
- Critical Safety Compliance: Acts as a reliable fail-safe to prevent overheating conditions in residential heating systems.
Common Questions
How do I determine if my 11G55 limit switch is faulty?
Technicians should check for continuity across the terminals when the switch is cold. If the circuit remains open at room temperature or fails to break the circuit at 130°F, the bimetal disc has likely fatigued and requires a direct replacement.
Are the 11G55 and 11G5501 parts interchangeable?
Yes, Lennox 11G55 and 11G5501 are the same physical component and are electronically and mechanically identical.
What causes this limit switch to trip frequently?
Frequent tripping is often a symptom of restricted airflow, such as a clogged furnace filter, blocked return ducts, or a failing blower motor, rather than a defect in the switch itself.
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 Lennox 11G55 Limit Switch is a critical safety component designed for precise thermal regulation in high-efficiency HVAC equipment. This 100-130F automatic reset limit ensures that burner assemblies or heat exchangers do not exceed safe operating temperatures. Often listed under the interchangeable part number 11G5501, this sensor features a high-sensitivity bimetal disc that breaks the electrical circuit upon reaching its 130°F cutout point and automatically closes once temperatures stabilize back at 100°F. For service technicians, the 11G55 provides a reliable solution for Lennox furnace troubleshooting involving frequent tripping or faulty cycling. Engineered to meet strict OEM specifications, this Lennox replacement part ensures system integrity and maintains strict airflow temperature monitoring. Its robust construction and standardized mounting flange facilitate a rapid HVAC limit switch replacement, reducing downtime on the job site and ensuring the heating system operates within its designed thermal profile.
Key Benefits
- Precise Thermal Calibration: Calibrated for a 130°F cutout and 100°F differential to prevent heat exchanger stress.
- Automatic Reset Functionality: Eliminates the need for manual intervention after a temporary temperature spike, restoring system operation once cooled.
- OEM Compatibility: Replaces Lennox 11G5501 and fits various Lennox G-series furnace models with exact fitment.
- Critical Safety Compliance: Acts as a reliable fail-safe to prevent overheating conditions in residential heating systems.
Common Questions
How do I determine if my 11G55 limit switch is faulty?
Technicians should check for continuity across the terminals when the switch is cold. If the circuit remains open at room temperature or fails to break the circuit at 130°F, the bimetal disc has likely fatigued and requires a direct replacement.
Are the 11G55 and 11G5501 parts interchangeable?
Yes, Lennox 11G55 and 11G5501 are the same physical component and are electronically and mechanically identical.
What causes this limit switch to trip frequently?
Frequent tripping is often a symptom of restricted airflow, such as a clogged furnace filter, blocked return ducts, or a failing blower motor, rather than a defect in the switch itself.
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.
