
Laars Heating Systems R0023000 Limit Switch
The Laars Heating Systems R0023000 Limit Switch is a critical safety component engineered to provide overheat protection for high-performance hydronic and pool heating systems. This 150F high limit switch is calibrated to automatically interrupt the electrical circuit when internal water temperatures exceed the 150°F threshold, effectively preventing thermal damage to the heat exchanger and downstream piping. As a veteran-grade OEM replacement part, this switch ensures that your Jandy or Teledyne Laars equipment operates within established engineering tolerances, mitigating the risk of system-wide lockout or component failure due to excessive thermal stress.
Designed for seamless integration with a broad range of Laars gas heaters, the R0023000 is the industry standard for maintaining HVAC safety controls in both residential and light commercial applications. This fixed temperature limit device is built to professional specifications, offering reliable temperature detection and a rapid response time that allows technicians to troubleshoot flow issues or scaling before they lead to permanent equipment damage. Whether you are performing routine maintenance or a critical repair on a Lite2 or Legacy series unit, this genuine Laars limit sensor is essential for restoring factory-spec safety protocols.
Key Benefits- Precise Thermal Calibration: Engineered to trigger a system shutdown at exactly 150°F to safeguard the heat exchanger.
- Vast Compatibility: Fits an extensive range of Teledyne Laars and Jandy models, including Lite2 (LD, LG, LJ), Legacy (LRZE, LRZM), and LXi series.
- Direct OEM Specification: Ensures exact fitment and electrical continuity without the need for field modifications.
- Critical Safety Redundancy: Provides a secondary layer of protection against thermostat failure or low-flow conditions.
What are the symptoms of a failing Laars R0023000 switch?
Technicians typically observe "Hi-Limit" error codes on the digital display or a heater that refuses to fire despite a call for heat. If the switch remains open at ambient temperatures, it has likely tripped permanently and requires replacement.
Is the R0023000 interchangeable with a 135°F limit switch?
No. Each heater model is engineered with a specific thermal profile. Replacing a 150°F switch with a 135°F unit will cause nuisance tripping, while using a higher-rated switch can compromise the safety of the heat exchanger.
Where is this switch typically located in the system?
The R0023000 is generally installed directly on the header or the manifold of the heater to monitor the temperature of the water as it exits the combustion chamber.
This item is not eligible for free shipping.
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: $55.46
-65%$55.46
$19.41Laars Heating Systems R0023000 Limit Switch
The Laars Heating Systems R0023000 Limit Switch is a critical safety component engineered to provide overheat protection for high-performance hydronic and pool heating systems. This 150F high limit switch is calibrated to automatically interrupt the electrical circuit when internal water temperatures exceed the 150°F threshold, effectively preventing thermal damage to the heat exchanger and downstream piping. As a veteran-grade OEM replacement part, this switch ensures that your Jandy or Teledyne Laars equipment operates within established engineering tolerances, mitigating the risk of system-wide lockout or component failure due to excessive thermal stress.
Designed for seamless integration with a broad range of Laars gas heaters, the R0023000 is the industry standard for maintaining HVAC safety controls in both residential and light commercial applications. This fixed temperature limit device is built to professional specifications, offering reliable temperature detection and a rapid response time that allows technicians to troubleshoot flow issues or scaling before they lead to permanent equipment damage. Whether you are performing routine maintenance or a critical repair on a Lite2 or Legacy series unit, this genuine Laars limit sensor is essential for restoring factory-spec safety protocols.
Key Benefits- Precise Thermal Calibration: Engineered to trigger a system shutdown at exactly 150°F to safeguard the heat exchanger.
- Vast Compatibility: Fits an extensive range of Teledyne Laars and Jandy models, including Lite2 (LD, LG, LJ), Legacy (LRZE, LRZM), and LXi series.
- Direct OEM Specification: Ensures exact fitment and electrical continuity without the need for field modifications.
- Critical Safety Redundancy: Provides a secondary layer of protection against thermostat failure or low-flow conditions.
What are the symptoms of a failing Laars R0023000 switch?
Technicians typically observe "Hi-Limit" error codes on the digital display or a heater that refuses to fire despite a call for heat. If the switch remains open at ambient temperatures, it has likely tripped permanently and requires replacement.
Is the R0023000 interchangeable with a 135°F limit switch?
No. Each heater model is engineered with a specific thermal profile. Replacing a 150°F switch with a 135°F unit will cause nuisance tripping, while using a higher-rated switch can compromise the safety of the heat exchanger.
Where is this switch typically located in the system?
The R0023000 is generally installed directly on the header or the manifold of the heater to monitor the temperature of the water as it exits the combustion chamber.
This item is not eligible for free shipping.
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 Laars Heating Systems R0023000 Limit Switch is a critical safety component engineered to provide overheat protection for high-performance hydronic and pool heating systems. This 150F high limit switch is calibrated to automatically interrupt the electrical circuit when internal water temperatures exceed the 150°F threshold, effectively preventing thermal damage to the heat exchanger and downstream piping. As a veteran-grade OEM replacement part, this switch ensures that your Jandy or Teledyne Laars equipment operates within established engineering tolerances, mitigating the risk of system-wide lockout or component failure due to excessive thermal stress.
Designed for seamless integration with a broad range of Laars gas heaters, the R0023000 is the industry standard for maintaining HVAC safety controls in both residential and light commercial applications. This fixed temperature limit device is built to professional specifications, offering reliable temperature detection and a rapid response time that allows technicians to troubleshoot flow issues or scaling before they lead to permanent equipment damage. Whether you are performing routine maintenance or a critical repair on a Lite2 or Legacy series unit, this genuine Laars limit sensor is essential for restoring factory-spec safety protocols.
Key Benefits- Precise Thermal Calibration: Engineered to trigger a system shutdown at exactly 150°F to safeguard the heat exchanger.
- Vast Compatibility: Fits an extensive range of Teledyne Laars and Jandy models, including Lite2 (LD, LG, LJ), Legacy (LRZE, LRZM), and LXi series.
- Direct OEM Specification: Ensures exact fitment and electrical continuity without the need for field modifications.
- Critical Safety Redundancy: Provides a secondary layer of protection against thermostat failure or low-flow conditions.
What are the symptoms of a failing Laars R0023000 switch?
Technicians typically observe "Hi-Limit" error codes on the digital display or a heater that refuses to fire despite a call for heat. If the switch remains open at ambient temperatures, it has likely tripped permanently and requires replacement.
Is the R0023000 interchangeable with a 135°F limit switch?
No. Each heater model is engineered with a specific thermal profile. Replacing a 150°F switch with a 135°F unit will cause nuisance tripping, while using a higher-rated switch can compromise the safety of the heat exchanger.
Where is this switch typically located in the system?
The R0023000 is generally installed directly on the header or the manifold of the heater to monitor the temperature of the water as it exits the combustion chamber.
This item is not eligible for free shipping.
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.












