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880/J-400 2-Pump Circuit Board 6600-728 - Bubbles Supply
Exact Fit

880/J-400 2-Pump Circuit Board 6600-728

Part #: 6600-728

$1786.83
In stock — ships today
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Fits these spas

Spa BrandCompatible Models
JacuzziJ-400 seriesVerified fit
Sundance880 seriesVerified fit

Also replaces

6600-728
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this spa pump

The Jacuzzi 6600-728 circuit board is an OEM replacement control board designed for Sundance and Jacuzzi 880/J-400 series spas with LCD displays and 2-pump configurations. This genuine circuit board manages your spa's heating and pump operations, resolving common error codes including HH (high heat) and OH (overheat) conditions that can shut down your spa system.

Built to exact OEM specifications, this control board delivers the precise fit and performance your Jacuzzi spa requires. We guarantee an exact fit for your application and back every circuit board with our comprehensive 1-year warranty. Most orders ship same-day from our Canadian facility, minimizing downtime when your spa needs immediate attention. Before installation, verify your existing board matches the 6600-728 part number and disconnect all power to ensure safe replacement of this critical spa component.

Exact part number

6600-728

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 2-pump PCB 6600-728
  • 6600-728
  • 880 series control board
  • J-400 circuit board
  • Sundance 880 main board

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

Fits these brands and models

Compatible brands

JacuzziSundance Spas

Compatible models

Jacuzzi

  • J-400 series

Sundance

  • 880 series
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:

  • HH (high heat) error code locking out the spa
  • OH (overheat) error code triggering system shutdown
  • Spa heater not activating despite correct water temperature
  • Pumps not responding to panel commands
  • LCD display freezing, going blank, or showing erratic readings
  • Spa cycling on and off unexpectedly

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

Before you buy — quick checklist

  • Locate the part number printed directly on your existing circuit board and confirm it reads 6600-728 before ordering
  • Verify your spa is a 2-pump configuration — this board is not compatible with single-pump or 3-pump setups
  • Confirm your spa has an LCD display, not an LED topside panel
  • Check whether your spa is a Sundance 880 series or Jacuzzi J-400 series — this board covers both
  • Disconnect all power at the breaker before removing the old board — capacitors can hold charge

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

Install difficulty: Medium — Some experience neededTypically 45-90 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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