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96"/31" Cable Temp/Hi-Limit Sensor 30337 - Bubbles Supply

96"/31" Cable Temp/Hi-Limit Sensor 30337

Part #: 30337

$89.06
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About this sensor

The Balboa 96"/31" Cable Temp/Hi-Limit Sensor (30337) is an essential temperature monitoring component for Balboa-equipped spa systems. This dual-function sensor features a 96-inch cable length with a 3/8-inch bulb and serves as both a temperature sensor and high-limit safety switch, protecting your spa from overheating while ensuring accurate temperature readings for optimal comfort.

Built to OEM specifications, this genuine Balboa sensor resolves common error codes including HH (high temperature), ICE (freeze protection), and OH (overheat) conditions. At Bubbles Supply, we guarantee an exact fit for your system and offer same-day shipping on in-stock items, backed by our comprehensive 1-year warranty. The 96-inch cable provides flexible installation options for various spa configurations. Always verify your existing sensor's cable length and bulb diameter before installation to ensure proper fitment and optimal system performance.

Exact part number

30337

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Also known as / Replaces

This part replaces or is interchangeable with:

  • Balboa temp sensor
  • combo sensor
  • dual sensor
  • hi-limit sensor
  • temperature/high-limit probe

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 topside display
  • OH error code on topside display
  • ICE error code or freeze protection fault
  • Spa overheating or not reaching set temperature
  • Inaccurate water temperature readings
  • Spa shutting down unexpectedly due to false high-limit trip

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

Before you buy — quick checklist

  • Confirm your existing sensor cable length — this is a 96-inch (8 ft) lead, verify it reaches your control box before ordering
  • Check the sensor bulb diameter on your current unit — this sensor uses a 3/8-inch bulb, and the well must match
  • Verify your spa runs a Balboa control system — check the control box label or topside for Balboa branding
  • Note whether your system uses a single combined sensor or separate temp and hi-limit probes — this is a dual-function unit
  • Inspect the sensor well or thermowell in your heater manifold before installation to ensure it is clear of debris and undamaged

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

  • Balboa 30337 temp/hi-limit sensor
  • 96-inch cable lead
  • Sensor bulb (3/8-inch diameter)

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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