Lennox 10U66 Pressure Switch
The Lennox 10U66 Pressure Switch is a critical safety component designed for heavy-duty HVACR applications, specifically engineered to monitor high-side refrigerant pressures. This 670# M/R Hi Pressure Switch acts as a fail-safe mechanism, protecting the compressor and system piping from catastrophic failure caused by extreme pressure spikes. It features a specific actuation point of 640 PSI and is built with a manual reset (M/R) configuration, ensuring that a technician must inspect the system before operation resumes. The SPST-NC contact form provides reliable circuit interruption, while the 120/240V rating and 12-inch leads allow for seamless integration into various Lennox condensing units and heat pumps. When you are troubleshooting a locked-out compressor, verifying the continuity of this Lennox 103735-04 replacement part is a standard diagnostic step for any field professional. This switch is vital for maintaining system integrity under high thermal loads.
Key Benefits:- High-Pressure Protection: Preventatively cuts power to the compressor when pressures exceed the 670 PSI safety threshold.
- Manual Reset Security: The manual reset pressure switch design ensures that mechanical issues are diagnosed by a pro before the system restarts.
- Direct OEM Compatibility: Replaces Lennox 103735-04 and R46930-001, maintaining original factory specifications.
- Durable Construction: Built to withstand extreme temperature fluctuations within the condenser cabinet.
- Simplified Installation: Comes equipped with 12-inch lead wires for quick field wiring.
What is the difference between an automatic and manual reset pressure switch?
An automatic switch resets once pressure drops, while the Lennox 10U66 requires a technician to manually press the reset button. This is a deliberate safety feature to prevent short-cycling a damaged system.
When should I replace the Lennox 10U66 high pressure switch?
If the switch has no continuity when high-side pressures are within normal operating ranges, or if the manual reset fails to latch, the internal bellows or contacts have likely failed and require replacement.
Is this switch compatible with R-410A systems?
Yes, the 670 PSI rating is specifically designed for the higher operating pressures associated with R-410A refrigerant cycles.
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: $42.94
-65%$42.94
$15.03Lennox 10U66 Pressure Switch
The Lennox 10U66 Pressure Switch is a critical safety component designed for heavy-duty HVACR applications, specifically engineered to monitor high-side refrigerant pressures. This 670# M/R Hi Pressure Switch acts as a fail-safe mechanism, protecting the compressor and system piping from catastrophic failure caused by extreme pressure spikes. It features a specific actuation point of 640 PSI and is built with a manual reset (M/R) configuration, ensuring that a technician must inspect the system before operation resumes. The SPST-NC contact form provides reliable circuit interruption, while the 120/240V rating and 12-inch leads allow for seamless integration into various Lennox condensing units and heat pumps. When you are troubleshooting a locked-out compressor, verifying the continuity of this Lennox 103735-04 replacement part is a standard diagnostic step for any field professional. This switch is vital for maintaining system integrity under high thermal loads.
Key Benefits:- High-Pressure Protection: Preventatively cuts power to the compressor when pressures exceed the 670 PSI safety threshold.
- Manual Reset Security: The manual reset pressure switch design ensures that mechanical issues are diagnosed by a pro before the system restarts.
- Direct OEM Compatibility: Replaces Lennox 103735-04 and R46930-001, maintaining original factory specifications.
- Durable Construction: Built to withstand extreme temperature fluctuations within the condenser cabinet.
- Simplified Installation: Comes equipped with 12-inch lead wires for quick field wiring.
What is the difference between an automatic and manual reset pressure switch?
An automatic switch resets once pressure drops, while the Lennox 10U66 requires a technician to manually press the reset button. This is a deliberate safety feature to prevent short-cycling a damaged system.
When should I replace the Lennox 10U66 high pressure switch?
If the switch has no continuity when high-side pressures are within normal operating ranges, or if the manual reset fails to latch, the internal bellows or contacts have likely failed and require replacement.
Is this switch compatible with R-410A systems?
Yes, the 670 PSI rating is specifically designed for the higher operating pressures associated with R-410A refrigerant cycles.
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 10U66 Pressure Switch is a critical safety component designed for heavy-duty HVACR applications, specifically engineered to monitor high-side refrigerant pressures. This 670# M/R Hi Pressure Switch acts as a fail-safe mechanism, protecting the compressor and system piping from catastrophic failure caused by extreme pressure spikes. It features a specific actuation point of 640 PSI and is built with a manual reset (M/R) configuration, ensuring that a technician must inspect the system before operation resumes. The SPST-NC contact form provides reliable circuit interruption, while the 120/240V rating and 12-inch leads allow for seamless integration into various Lennox condensing units and heat pumps. When you are troubleshooting a locked-out compressor, verifying the continuity of this Lennox 103735-04 replacement part is a standard diagnostic step for any field professional. This switch is vital for maintaining system integrity under high thermal loads.
Key Benefits:- High-Pressure Protection: Preventatively cuts power to the compressor when pressures exceed the 670 PSI safety threshold.
- Manual Reset Security: The manual reset pressure switch design ensures that mechanical issues are diagnosed by a pro before the system restarts.
- Direct OEM Compatibility: Replaces Lennox 103735-04 and R46930-001, maintaining original factory specifications.
- Durable Construction: Built to withstand extreme temperature fluctuations within the condenser cabinet.
- Simplified Installation: Comes equipped with 12-inch lead wires for quick field wiring.
What is the difference between an automatic and manual reset pressure switch?
An automatic switch resets once pressure drops, while the Lennox 10U66 requires a technician to manually press the reset button. This is a deliberate safety feature to prevent short-cycling a damaged system.
When should I replace the Lennox 10U66 high pressure switch?
If the switch has no continuity when high-side pressures are within normal operating ranges, or if the manual reset fails to latch, the internal bellows or contacts have likely failed and require replacement.
Is this switch compatible with R-410A systems?
Yes, the 670 PSI rating is specifically designed for the higher operating pressures associated with R-410A refrigerant cycles.
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.
