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3-Pump 880NT Maxxus Circuit Board 6600-392 - Bubbles Supply

3-Pump 880NT Maxxus Circuit Board 6600-392

Part #: 6600-392

$1663.25
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this spa pump

The 3-Pump 880NT Maxxus Circuit Board 6600-392 is the main control system for Sundance Spas equipped with the 880NT Maxxus control pack. This Rev 9.61A+ board manages all pump operations, heating cycles, and system diagnostics for your 3-pump spa configuration. Built to original Sundance specifications, this genuine replacement board ensures seamless integration with your existing control system.

At Bubbles Supply, we guarantee this circuit board will fit your 880NT Maxxus system perfectly. Every board ships the same day you order and comes backed by our comprehensive 1-year warranty for complete peace of mind. This critical component requires proper electrical connections and should be installed by a qualified technician. Always verify your current board's part number matches 6600-392 before ordering to ensure compatibility.

Exact part number

6600-392

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 6600-392 Circuit Board
  • 880NT Control Board
  • 880NT Maxxus Main Board
  • Sundance Maxxus PCB

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

Common symptoms this part fixes

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

  • Spa is completely unresponsive — no display, no pumps, no heat
  • Pumps cycling on and off erratically or failing to start on command
  • Heater not activating despite correct water temperature settings
  • Error codes on topside panel that persist after power cycling
  • One or more pumps not responding to topside controls
  • System diagnostics failing or reporting incorrect sensor readings

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

Before you buy — quick checklist

  • Confirm your existing board's part number is 6600-392 — check the label printed directly on your current board
  • Verify your spa is an 880NT Maxxus control pack with a 3-pump configuration — this board will not work in 2-pump or other 880 variants
  • Confirm firmware revision compatibility — this board runs Rev 9.61A or higher; check your topside display or existing board label
  • Inspect your wiring harness connectors for corrosion or heat damage before installing a new board — a damaged harness can damage a new board immediately
  • Document or photograph all wiring connections before disconnecting anything from your old board
  • If your spa is still under manufacturer warranty, contact Sundance directly before replacing this component yourself

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

Install difficulty: Hard — Technician recommendedTypically 60-120 minutes

Warranty

1 year 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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