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SD780 2 Pump Circuit Board 6600-848 - Bubbles Supply

SD780 2 Pump Circuit Board 6600-848

Part #: 6600-848

$708.72
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 SD780 2 Pump Circuit Board (part number 6600-848) is an original equipment replacement control board designed for Sundance Spas systems. This genuine OEM circuit board manages dual pump operations at 60Hz frequency, providing reliable control for your spa's circulation and jet pumps. The board features integrated balboa technology for precise temperature and pump cycle management.

At Bubbles Supply, we guarantee this control board is the exact fit for your Sundance system, backed by our comprehensive 1-year warranty and same-day shipping on in-stock orders. This authentic replacement ensures seamless compatibility with your existing spa setup, maintaining the performance standards your Sundance spa was designed to deliver. Professional installation is recommended due to electrical connections and proper wiring requirements - always disconnect power at the breaker before replacing any control system components.

Exact part number

6600-848

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 6600-848 Circuit Board
  • SD780 Control Board
  • Sundance 780 2-Pump PCB
  • Sundance Spas Control Pack Board

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 pumps not responding to control panel commands
  • One or both pumps fail to start
  • Erratic pump cycling or unexpected shutdowns
  • Spa stuck in error or fault code state related to pump control
  • No display or control panel communication with pump circuit
  • Pumps run continuously and won't shut off

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

Before you buy — quick checklist

  • Confirm your spa model is in the Sundance 780 Series before ordering
  • Verify your existing board part number matches 6600-848 — check the label on the board itself
  • Confirm your spa system runs on a 2-pump configuration (not 1-pump or 3-pump)
  • Confirm your system operates at 60Hz — this board is rated for 60Hz only
  • Inspect wiring harness connectors for corrosion or heat damage before reinstalling
  • Check for visible burn marks or failed components on the old board to rule out a deeper electrical fault

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

Install difficulty: Hard — Technician recommendedTypically 60-90 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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