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NEO Control Sensor 775-0100 - Bubbles Supply

NEO Control Sensor 775-0100

Part #: 775-0100

$63.32
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this control pack

The Waterway NEO Control Sensor 775-0100 is a precision 10K water temperature sensor designed for Waterway NEO control systems in residential spas and hot tubs. This OEM replacement sensor accurately monitors water temperature to ensure your spa maintains the perfect heat level for safe, comfortable soaking.

Built to Waterway's exact specifications, this temperature sensor helps resolve common spa issues including HH (high heat), ICE (freeze protection), and OH (overheat) error codes. At Bubbles Supply, we guarantee this sensor will fit your NEO control system perfectly, and we'll ship it the same day you order. Every sensor comes with our comprehensive 1-year warranty for complete peace of mind. For proper operation, ensure the sensor probe is fully immersed in the water flow and all electrical connections are clean and secure before installation.

Exact part number

775-0100

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 10K ohm sensor
  • 10K thermistor
  • NEO temp sensor
  • water temperature sensor

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:

  • HH error code on NEO control panel
  • OH (overheat) error code that won't clear
  • ICE (freeze protection) fault triggering incorrectly
  • Spa heating erratically or not holding set temperature
  • Spa displaying incorrect water temperature reading
  • Spa shutting down unexpectedly due to false temperature fault

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

Before you buy — quick checklist

  • Confirm your control system is a Waterway NEO — this sensor is not universal across all Waterway boards
  • Verify the existing sensor is a 10K ohm thermistor before ordering (you can test resistance with a multimeter at room temperature; a healthy 10K sensor reads approximately 10,000 ohms at 25°C)
  • Inspect the sensor well or port for corrosion or damage before installing the new sensor — a damaged well will cause repeat failures
  • Check the sensor connector and wiring harness for corrosion or pin damage, as a faulty connector can mimic a bad sensor
  • Clear all error codes and power-cycle the spa after installation to confirm the fault is resolved

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

  • NEO temperature sensor (775-0100)
  • Connector/lead wire

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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