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850 Series Trapezoid Keypad SD6600-865 - Bubbles Supply

850 Series Trapezoid Keypad SD6600-865

Part #: SD6600-865

$1167.59
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this topside/keypad

The 850 Series Trapezoid Keypad SD6600-865 is a genuine OEM spaside control designed specifically for Sundance Spas 850 series hot tubs. This premium 10-button LCD control panel delivers precise command over your spa's essential functions, featuring an intuitive trapezoid design that fits seamlessly into your spa's control panel cavity. The clear LCD display provides easy-to-read feedback on temperature settings, pump operation, and system status.

Built to Sundance's exacting standards, this authentic replacement ensures reliable performance and seamless integration with your existing spa system. At Bubbles Supply, we guarantee an exact fit for your Sundance spa, back every control with a full 1-year warranty, and ship same-day to minimize your downtime. This direct-fit replacement installs without modification—simply disconnect the old keypad and connect this unit using the existing wiring harness for immediate restoration of full spa control functionality.

Exact part number

SD6600-865

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 850 Series Spaside Control
  • 850 Series Topside Keypad
  • SD6600-865 Topside
  • Sundance 850 Trapezoid Control Panel

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:

  • Keypad buttons not responding or intermittently failing
  • Blank or unreadable LCD display
  • Spa functions cannot be adjusted from the topside panel
  • Control panel showing garbled or frozen display
  • Temperature or jet settings not registering changes
  • Physical damage or cracking to existing keypad housing

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

Before you buy — quick checklist

  • Confirm your spa is an 850 Series model — this keypad will not fit other Sundance series
  • Verify the trapezoid keypad shape matches your existing panel cavity before ordering
  • Check that your current control pack is compatible with the SD6600-865 topside
  • Inspect the existing wiring harness connector for damage before assuming the keypad is the failed component
  • If the display is blank, rule out a control pack or power supply issue before replacing the keypad

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

Install difficulty: Easy — DIY-friendlyTypically 15–30 minutes

What's in the box

  • SD6600-865 Trapezoid Keypad
  • Connecting cable/wiring harness
  • Mounting hardware

If your order is missing any items listed above, contact hello@bubblessupply.com within 48 hours of delivery.

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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