Jandy LXi Heaters High Limit Switch Harness | R0457400
Jandy
SKU: JNDR0457400
Jandy R0457400 High-Limit Switch Harness Assembly
The Jandy R0457400 harness assembly is a genuine OEM replacement part for select Jandy / Zodiac in-ground pool and spa heaters. It serves as the high-limit switch wiring assembly that connects the heater’s overheat sensors to the control board to ensure safe operation and prevent overheating.
Key Features
- OEM high-limit switch harness — designed specifically for Jandy LXi and Legacy (LRZE/LRZM) pool- and spa-heater models.
- Protects heater system by shutting down operation if the heater exceeds safe temperature thresholds.
- Pre-wired harness simplifies replacement — plug-and-play installation for quick, reliable swap-out without needing complex rewiring.
- Durable construction — built to withstand heat and the demands of pool and spa environments.
Specifications
- Brand: Jandy / Zodiac
- Part Number: R0457400
- Type: High-Limit Switch Harness Assembly (for pool/spa heaters)
- Compatible Heater Models: Jandy LXi series (e.g. 250, 300, 400) and Legacy LRZE / LRZM series (e.g. 125, 175, 250, 325, 400)
- Includes: High-limit switch wiring harness assembly (ready for direct replacement)
Usage & Installation Notes
Use this harness when replacing a damaged or failed high-limit wiring assembly on compatible Jandy/Zodiac pool or spa heaters. Always disconnect power and gas supply before servicing the heater. Install in the original mounting location and reconnect to the control board and sensor switches. Once installed, test heater operation to confirm the high-limit safety function is restored and operational.
Why It Matters
The high-limit switch harness is a critical safety component — without a functioning harness, the heater cannot reliably detect overheating, which may lead to damage or unsafe operation. Replacing worn or faulty harnesses with the correct OEM part like R0457400 ensures continued safe, efficient heater performance.
Hours Of Operation:
Monday - Friday: 8:00 am to 4:00 pm Phoenix Time
Saturday and Sunday: Closed
- Orders costing more than $300 WILL be required to have signature confirmation upon delivery.
- Handling time is typically only 1 day.
- Any item ordered after 1pm Phoenix time, may not ship same-day.
- Call us if you require expedited shipping and we can give you quotes based on your needs.
Return Policy:
- All products, except as noted below, are eligible for return up to 30 days after receipt of item.
- For returns, an RMA form must be filled out HERE or customers can call for additional help.
- Shipping costs will be deducted from all returned items.
- Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in.
- Items broken, damaged, or inoperable due to installer error will not be refunded.
- Fill out the return form or give us a call to obtain an RMA and return shipping label.
- There are no returns on the Pentair Colorsync 618031
- No returns on pool cleaners.
- No returns on opened seals and o-rings.
- No returns on capacitors.
- If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
- All products denied upon arrival at customers house WILL be charged the cost to ship.
- Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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