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Water Temp Sensor 6600-751 - Bubbles Supply
Exact Fit

Water Temp Sensor 6600-751

Part #: 6600-751

$86.12
In stock — ships today
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Fits these spas

Spa BrandCompatible Models
JacuzziJ-SeriesVerified fit
Sundance SpasVarious models compatible with 3-pin temp sensor configurationVerified fit
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this sensor

The Water Temp Sensor 6600-751 is a genuine OEM 3-pin temperature sensor designed for Sundance and Jacuzzi J-Series spas. This critical component monitors water temperature to ensure your spa maintains the perfect heat level while preventing dangerous overheating conditions that trigger HH, ICE, or OH error codes.

Built to exact OEM specifications, this sensor delivers the precise readings your spa's control system depends on for safe, reliable operation. At Bubbles Supply, we guarantee an exact fit for your spa with same-day shipping on in-stock parts and back every sensor with our comprehensive 1-year warranty. Proper installation requires basic electrical knowledge—always disconnect power before replacing any spa sensor to ensure safe installation and optimal performance.

Exact part number

6600-751

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 3-pin water temperature sensor
  • hi-limit sensor
  • spa temp sensor
  • water sensor 6600-751

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

Fits these brands and models

Compatible brands

JacuzziSundance Spas

Compatible models

Jacuzzi

  • J-Series

Sundance Spas

  • Various models compatible with 3-pin temp sensor configuration
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 error code on control panel
  • ICE error code on control panel
  • OH (overheat) error code on control panel
  • Spa not heating to set temperature
  • Spa shutting down unexpectedly
  • Inaccurate water temperature readings on topside display

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

Before you buy — quick checklist

  • Confirm your spa is a Sundance or Jacuzzi J-Series model — this is an OEM part with specific fitment
  • Verify your existing sensor is a 3-pin connector type before ordering
  • Check whether the error code clears after power cycling — a persistent HH, ICE, or OH fault that returns points to sensor failure
  • Inspect the sensor well for scale buildup or corrosion before installing — clean the well before fitting the new sensor
  • Confirm the fault is sensor-related and not a heater or control board issue

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

Install difficulty: Medium — Some experience neededTypically 30-60 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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