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Dual Purpose Sensor 12-Sensor-12D - Bubbles Supply

Dual Purpose Sensor 12-Sensor-12D

Part #: 12-Sensor-12D

$185.17
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this sensor

The ACC Dual Purpose Sensor 12-Sensor-12D combines temperature sensing and overheat protection in one essential assembly for ACC spa systems. This OEM replacement sensor monitors water temperature while providing critical safety shutoff when temperatures exceed safe operating limits, protecting your spa's heating elements and pump from damage.

Engineered to exact ACC specifications, this dual-function sensor delivers reliable performance with our exact fit guarantee. We ship same-day from our Canadian warehouse and back every sensor with a full 1-year warranty for complete confidence. The 12-Sensor-12D effectively resolves HH (high limit), ICE (temperature sensor), and OH (overheat) error codes that can shut down your spa. Ensure proper wire connections and sensor placement during installation for optimal temperature monitoring and safety protection.

Exact part number

12-Sensor-12D

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • ACC dual sensor
  • combo sensor
  • dual-function spa sensor
  • high limit sensor
  • temp 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 spa display
  • OH error code triggering safety shutoff
  • ICE error code falsely indicating freeze risk
  • Spa heater cutting out unexpectedly
  • Spa reporting incorrect water temperature
  • Spa locked out and unresponsive after overtemp event

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

Before you buy — quick checklist

  • Confirm your spa control system is an ACC brand unit — this is an OEM-specific sensor
  • Check your existing sensor's connector type and wire lead length before ordering
  • Verify sensor well or port location on your heater manifold is compatible
  • Note the error codes your spa is currently throwing — this sensor addresses HH, ICE, and OH faults specifically
  • Inspect the sensor well for corrosion or debris that may have caused the original sensor to fail

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

  • 12-Sensor-12D dual purpose sensor assembly
  • Connector with wire leads

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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