Smart hose timer internal flooding - Troubleshooting / Tech Support - Rachio Community

Post by franz on Oct 13, 2025

@tkbrigham I am having our customer success team reach out to you.

Thank you for your patience!

Post by JBrachio on Nov 6, 2025

I have experienced the same flooding issue with my unit

Post by franz on Nov 6, 2025

@JBrachio I will have our CS team reach out to you.

Thank you for your patience.

Post by uncgal10 on Nov 11, 2025

Has anyone found a modification to make to prevent the internal flooding? Also does anyone have a picture/video of the internal flooding in action? I have replaced two timers due to this and want to install this third with some preventive measures. There are no leaks from my spigot and other non-smart hose timers have worked great so I am chucking this up to a design flaw.

Post by jlpatinop78 on Dec 28, 2025

Merry Christmas @franz I love this product but I am experiencing the same exact challenge, even with The battery door is properly closed and secured. Despite this, moisture is consistently found inside the battery compartment.

It appears that the battery door seal weakens over time, allowing water intrusion during normal outdoor exposure (rain or irrigation). This has resulted in repeated battery failures and renders the device unreliable for its intended use.

This issue appears to be related to a sealing or housing defect.

Post by dmegee on Dec 28, 2025

I have the same problem. I frequently clean the rust and reset. Usually works. It’s a real problem when I am out of town for awhile. Today I cleaned the valve and the light doesn’t come on and therefore pairing doesn’t work.

Follow-up on Jan 5

@jlpatinop78 @dmegee Just getting to these…

Do you still need assistance with this?

Post by rachio on Feb 7

I’m having the same problem, which I fear has contributed to a follow-on issue.

I noticed rust color outside the battery compartment, so I opened the unit and discovered a lot of rust, heavily corroded batteries, and the foam inside the cover was soggy wet.

I used a brush to clean the terminals, replaced the batteries, and left it outside a few hours so the internals could dry.

Later, I connected everything again and turned on the water. unlike some above, the system seemed to work - the light turned blue and water started flowing; however, when I pushed the button again, the light turned red, but the water just kept going.

Not sure what to do next… is the unit dead? Do I need a replacement?

Post by Jbraz on Feb 19

I’m having the same issue. It just keeps dripping out of the battery compartment.

Post by AngieTheGardener on Mar 16

I’ve only had the Rachio working for two months in California and it broke with flooding of batteries. So much for this battery set working for the watering season, according to Rachio marketing materials.

Post by ClashingPlaids on Mar 25

I also experienced this problem, and I appreciate that Rachio provided a replacement. However, I am concerned that there has been no mention of any root cause analysis, unit redesign, or even hacks to avoid the problem. It’s nearly time to put the replacement unit to work, so I’d like to figure out how to avoid a repeat.

Do we even know if the water is leaking in (due to rain or watering), or leaking internally? At least one person has said that their valve was in a sheltered location, suggesting an internal leak. If so, a temporary hack might be to drill a drain hole so the water can leak out. On the other hand, if the water is leaking into the unit, perhaps the suggestion to seal the door with duct (or better) tape (or, better yet, a redesigned gasket) might be worth trying.

Simply replacing rusted units–while admirable–isn’t helping Rachio or users.

Post by Bahr on Mar 31

Same issue but contacted support. They said since it was over a year that I had been fighting it they could no longer repair or replace. Good idea but not product.

Post by btrimboli on Jun 20

I have water oozing from the blue button on my smart hose timer, and it no longer works (despite changing out batteries). I bought it in 2023, so I assume it is no longer under warranty.

Is it possible to purchase another smart hose timer valve without the wifi hub (since I already have that)?