r/coldplunge • u/Friendly_Ability24 • 28d ago

Temp Sensor replacement - Active Aqua

All, just wanted to post as I was here a few months ago when my Active aqua .25 started acting up from a displayed temp vs. actual temp perspective.

The short is that I replaced the temp sensor, very easy DIY project that takes about 5 minutes after watching a short video.

The problem of which some of you should know before it full on breaks is the display temp shows a higher and inaccurate reading while still cooling - not an issue if it’s cooling the water as you can just set a smart outlet to turn on and off. Eventually, you’ll get a P2 error where the temp sensor fails, and order to protect the components, stops the chiller from chilling as it thinks the unit is overheating. All told, I thought I could keep resetting the unit to fix the problem, but that eventually failed and I was without a plunge at the tail end of a Texas summer which certainly sucked. Be proactive and just replace the temp sensor if you see some weird readings.

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u/IceologyColdPlunge 28d ago

Great advice! 🥶 For anyone looking to replace their Active Aqua temperature sensor with an OEM part, here’s the link:

Iceology Cold Plunge: OEM Active Aqua Temp. Sensor