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 critical safety device designed to prevent overheating in a wide range of Jandy and Teledyne Laars pool and spa heaters. Calibrated to trigger a system shutdown at 150°F, this switch ensures that the heater operates within safe temperature limits, preventing damage to internal components caused by excessive heat. It's compatible with several popular models, including those in the Legacy and Lite2 series. As a direct OEM replacement, it offers reliable protection and supports the long-term safety and performance of your heating system.
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Activates at 150°F to Prevent Overheating: Automatically shuts off the heater when internal temperatures exceed safe operating limits, protecting components from thermal damage
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Maintains Safe System Functionality: Helps ensure your heater runs within proper temperature ranges, preventing dangerous conditions and promoting user safety
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Fits Multiple Jandy and Laars Models: Designed for compatibility with a variety of heaters, including many Legacy and Lite2 systems, for versatile application
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Supports Long-Term Equipment Reliability: Plays a crucial role in protecting the system’s heat exchanger and controls, reducing wear caused by overheating events
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Genuine OEM Replacement Quality: Manufactured to Jandy specifications for dependable function and accurate temperature detection over time
- (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.

