Lennox 69M18 Pressure Switch
The Lennox 69M18 Pressure Switch, also identified by part number 69M1801, is a critical safety component engineered for high-pressure monitoring in professional HVACR applications. As a Lennox OEM replacement part, this high-pressure cutout switch is factory-calibrated to trigger a manual reset (M/R) cutout at 640 PSI. This precise threshold is essential for protecting the compressor from catastrophic failure due to excessive discharge pressure, common in systems dealing with restricted airflow or refrigerant overcharge. This HVAC pressure control ensures that the system stays within safe operating parameters, maintaining the integrity of the refrigeration circuit while avoiding the hazards associated with over-pressurization.
For technicians performing maintenance on Lennox heat pumps or air conditioning units, using the 69M18 high pressure switch ensures field-proven compatibility and reliability. This genuine Lennox part eliminates the calibration guesswork often found with universal controls, providing a direct fit that restores original factory specs. Whether you are addressing a tripped pressure switch or installing a new replacement, the heavy-duty construction and OEM technical specifications of this unit provide the durability required for demanding commercial and residential environments.
Key Benefits
- Precision Calibration: Factory-set for a 640# M/R cutout to prevent system damage and ensure safety code compliance.
- OEM Compatibility: Specifically engineered as a direct Lennox 69M1801 replacement for seamless integration into existing control loops.
- Manual Reset Safety: Features a manual reset requirement, ensuring technicians can diagnose the root cause of high-pressure events before system restart.
- Rugged Construction: Built to withstand high-cycle vibration and thermal fluctuations common in outdoor condenser units.
- System Protection: Acts as a primary fail-safe to extend the lifecycle of the compressor and other high-side components.
Common Questions
What causes the Lennox 69M18 to trip the high-pressure cutout?
Common causes include a failed outdoor fan motor, a dirty condenser coil, or an overcharged refrigerant system, all of which push head pressure above the 640 PSI limit.
Is the 69M18 switch a manual or automatic reset?
This is a manual reset pressure switch. If the system exceeds 640 PSI, a technician must physically reset the switch after the pressure drops to a safe level, ensuring the underlying fault is addressed.
Can I use this switch in non-Lennox equipment?
While this is a Lennox OEM part, it can be used in other applications requiring a 640# high-pressure cutout, provided the mounting threads and electrical connections meet the system requirements.
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: $36.65
-65%$36.65
$12.83Lennox 69M18 Pressure Switch
The Lennox 69M18 Pressure Switch, also identified by part number 69M1801, is a critical safety component engineered for high-pressure monitoring in professional HVACR applications. As a Lennox OEM replacement part, this high-pressure cutout switch is factory-calibrated to trigger a manual reset (M/R) cutout at 640 PSI. This precise threshold is essential for protecting the compressor from catastrophic failure due to excessive discharge pressure, common in systems dealing with restricted airflow or refrigerant overcharge. This HVAC pressure control ensures that the system stays within safe operating parameters, maintaining the integrity of the refrigeration circuit while avoiding the hazards associated with over-pressurization.
For technicians performing maintenance on Lennox heat pumps or air conditioning units, using the 69M18 high pressure switch ensures field-proven compatibility and reliability. This genuine Lennox part eliminates the calibration guesswork often found with universal controls, providing a direct fit that restores original factory specs. Whether you are addressing a tripped pressure switch or installing a new replacement, the heavy-duty construction and OEM technical specifications of this unit provide the durability required for demanding commercial and residential environments.
Key Benefits
- Precision Calibration: Factory-set for a 640# M/R cutout to prevent system damage and ensure safety code compliance.
- OEM Compatibility: Specifically engineered as a direct Lennox 69M1801 replacement for seamless integration into existing control loops.
- Manual Reset Safety: Features a manual reset requirement, ensuring technicians can diagnose the root cause of high-pressure events before system restart.
- Rugged Construction: Built to withstand high-cycle vibration and thermal fluctuations common in outdoor condenser units.
- System Protection: Acts as a primary fail-safe to extend the lifecycle of the compressor and other high-side components.
Common Questions
What causes the Lennox 69M18 to trip the high-pressure cutout?
Common causes include a failed outdoor fan motor, a dirty condenser coil, or an overcharged refrigerant system, all of which push head pressure above the 640 PSI limit.
Is the 69M18 switch a manual or automatic reset?
This is a manual reset pressure switch. If the system exceeds 640 PSI, a technician must physically reset the switch after the pressure drops to a safe level, ensuring the underlying fault is addressed.
Can I use this switch in non-Lennox equipment?
While this is a Lennox OEM part, it can be used in other applications requiring a 640# high-pressure cutout, provided the mounting threads and electrical connections meet the system requirements.
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 Lennox 69M18 Pressure Switch, also identified by part number 69M1801, is a critical safety component engineered for high-pressure monitoring in professional HVACR applications. As a Lennox OEM replacement part, this high-pressure cutout switch is factory-calibrated to trigger a manual reset (M/R) cutout at 640 PSI. This precise threshold is essential for protecting the compressor from catastrophic failure due to excessive discharge pressure, common in systems dealing with restricted airflow or refrigerant overcharge. This HVAC pressure control ensures that the system stays within safe operating parameters, maintaining the integrity of the refrigeration circuit while avoiding the hazards associated with over-pressurization.
For technicians performing maintenance on Lennox heat pumps or air conditioning units, using the 69M18 high pressure switch ensures field-proven compatibility and reliability. This genuine Lennox part eliminates the calibration guesswork often found with universal controls, providing a direct fit that restores original factory specs. Whether you are addressing a tripped pressure switch or installing a new replacement, the heavy-duty construction and OEM technical specifications of this unit provide the durability required for demanding commercial and residential environments.
Key Benefits
- Precision Calibration: Factory-set for a 640# M/R cutout to prevent system damage and ensure safety code compliance.
- OEM Compatibility: Specifically engineered as a direct Lennox 69M1801 replacement for seamless integration into existing control loops.
- Manual Reset Safety: Features a manual reset requirement, ensuring technicians can diagnose the root cause of high-pressure events before system restart.
- Rugged Construction: Built to withstand high-cycle vibration and thermal fluctuations common in outdoor condenser units.
- System Protection: Acts as a primary fail-safe to extend the lifecycle of the compressor and other high-side components.
Common Questions
What causes the Lennox 69M18 to trip the high-pressure cutout?
Common causes include a failed outdoor fan motor, a dirty condenser coil, or an overcharged refrigerant system, all of which push head pressure above the 640 PSI limit.
Is the 69M18 switch a manual or automatic reset?
This is a manual reset pressure switch. If the system exceeds 640 PSI, a technician must physically reset the switch after the pressure drops to a safe level, ensuring the underlying fault is addressed.
Can I use this switch in non-Lennox equipment?
While this is a Lennox OEM part, it can be used in other applications requiring a 640# high-pressure cutout, provided the mounting threads and electrical connections meet the system requirements.
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.
