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Sweetwater Hi-Limit Sensor 6600-0144 - Bubbles Supply
Exact Fit

Sweetwater Hi-Limit Sensor 6600-0144

Part #: 6600-144

$12.92
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Also replaces

6600-0144
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this sensor

The Sweetwater Hi-Limit Sensor 6600-0144 is an OEM replacement safety sensor designed for Sundance spa systems. This essential component features distinctive curled finger terminals and monitors water temperature to prevent overheating by shutting down the heater when unsafe temperatures are detected.

When your spa displays HH (high heat), ICE, or OH (overheat) error codes, a faulty hi-limit sensor is often the culprit. Our genuine Sweetwater sensor ensures exact fit guaranteed and comes with our 1-year warranty for complete peace of mind. We ship same-day to get your spa back to safe operation quickly. The curled finger design provides secure electrical connections for reliable temperature monitoring. Always verify sensor compatibility with your specific spa model before installation, and ensure power is disconnected during replacement.

Exact part number

6600-144

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 6600-0144
  • hi-limit sensor
  • high limit sensor
  • overheat sensor
  • spa temperature safety sensor
  • thermal cutoff sensor

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

Fits these brands and models

Compatible brands

Sundance SpasSweetwater
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:

  • Spa displaying HH (high heat) error code
  • Spa displaying OH (overheat) error code
  • Spa displaying ICE error code
  • Heater shutting down unexpectedly
  • Spa not heating despite correct set temperature
  • False overheat shutdowns at normal operating temperatures

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

Before you buy — quick checklist

  • Confirm your spa control board is compatible with OEM sensor part number 6600-0144
  • Verify your existing sensor uses curled finger terminals — this is not a universal fit
  • Rule out a faulty control board before replacing the sensor, as board faults can mimic sensor errors
  • Check sensor well location on your spa — ensure the new sensor will reach without wire strain
  • Disconnect all power to the spa before handling any electrical components

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

Install difficulty: Medium — Some experience neededTypically 30-60 minutes

What's in the box

  • Hi-limit sensor (6600-0144)
  • Curled finger terminal connector

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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