Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
Still not sure? Call (818) 818-6559 and we'll find it for you.
OEM Jandy Hi-Limit Switch R0023000 is a temperature-sensitive safety switch designed for use in select Jandy and Teledyne Laars heaters, including Legacy and Lite2 models. This switch is set to trip at 150°F, stopping heater operation when temperatures exceed safe thresholds. It protects internal components and extends heater life by reducing the risk of heat-related damage. Easy to install and trusted for its precision, this switch is an essential part of your heater’s safety system, offering peace of mind and dependable thermal regulation.
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Trips at 150°F for Thermal Safety: Monitors heat levels inside the heater and cuts power if temperatures rise above safe limits to prevent overheating
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Protects Heater and Users Alike: Helps prevent damage to internal heater components while maintaining a safe environment for pool and spa users
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Broad Heater Compatibility: Approved for use in a range of Jandy and Laars units, making it a reliable solution for service across multiple heater platforms
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Essential to Heater Safety Systems: Serves as a frontline safeguard, ensuring over-temperature conditions do not result in system failure or damage
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Reliable OEM Performance: Built for durability and accuracy under continuous use in high-temperature poolside environments
- (1) Jandy R0023000 Hi-Limit Switch
- Jandy LXi Heaters
- Jandy Legacy LRZE and LRZM Heaters
- Jandy Lite2 LD, LG, LJ Heaters
- Jandy LX and LT Heaters
- Jandy Laars ESG and ESC Heaters
Note: This Hi-Limit Switch may be compatible with your system, please refer to your owners manual to ensure compatibility.

