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1-Pump 3-Relay 3.56+ Circuit Board 6600-724 - Bubbles Supply
Exact Fit

1-Pump 3-Relay 3.56+ Circuit Board 6600-724

Part #: 6600-724

$670.22
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this spa pump

This genuine Jacuzzi circuit board (part #6600-724) controls pump and relay functions in Sundance and Jacuzzi spa systems from 1999 onwards. The LX-10 Rev 3.56+ board manages one pump and three relay operations, serving as the central control hub for your spa's electrical components. This OEM replacement ensures reliable operation of heating, filtration, and accessory functions.

Our exact fit guarantee means this board will integrate seamlessly with your existing control pack, backed by same-day shipping and a full 1-year warranty for complete peace of mind. Whether you're experiencing erratic pump cycles, heating issues, or relay malfunctions, this genuine replacement restores your spa's performance to factory specifications. Professional installation recommended due to high-voltage electrical connections—always disconnect power and consult your spa's wiring diagram before replacing any control board components.

Exact part number

6600-724

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 1-pump 3-relay control board
  • 6600-724 PCB
  • LX-10 circuit board
  • LX-10 Rev 3.56+ board

Looking for an older part number? Check our supersession lookup tool

Fits these brands and models

Compatible brands

JacuzziSundance Spas
Not sure if it fits your spa? Send us a photo — we'll confirm before you order

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • Pump fails to start or runs erratically
  • Spa heater not activating or cycling off unexpectedly
  • One or more relays clicking but not engaging
  • Control panel shows error codes related to pump or relay faults
  • Accessory functions (lights, blower, ozone) not responding to commands
  • Spa loses settings or behaves unpredictably after power cycle

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy — quick checklist

  • Confirm your existing board revision is LX-10 Rev 3.56 or later — earlier revisions may not be a direct swap
  • Verify your spa uses a 1-pump, 3-relay configuration before ordering
  • Check the OEM part number printed on your current board matches 6600-724
  • Confirm your spa is a 1999 or newer Jacuzzi or Sundance model
  • Inspect the control pack enclosure for water intrusion or burn damage before replacing the board — a shorted component elsewhere can destroy a new PCB
  • Have your spa's wiring diagram on hand before disconnecting any connectors

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Hard — Technician recommendedTypically 60-120 minutes

Warranty

1 year manufacturer warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee →

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers — no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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