Smart hose timer internal flooding

post by Fymaxwell on Jun 26, 2024

I’ve got water flooding into the battery chamber of my Rachio smart hose timer. I’ve been through this in the past with two units that Rachio replaced, and I am starting to wonder if it’s me or Rachio that’s to blame.

I am currently running four timers. Three of the timers are trouble-free. The one that is malfunctioning was bought at the same time as the two others that previously failed, so perhaps there were manufacturing issues with that batch? I’d appreciate any insight that the community might be able to offer, as this is starting to drive me mad.

Top replies

post by Thomas_Lerman on Jun 26, 2024

I have one timer with no issues

post by franz on Jun 26, 2024

@Fymaxwell I’m having our support team reach out to you. They will take care of you!

post by WaterMunkee on Oct 9, 2024

Same here. Twice. First time I thought maybe I could’ve incorrectly installed the battery door. Lots of corrosion inside after 45 days, device quit working. After cleaning thoroughly, I installed fresh batteries and battery door and ensured everything was snug. New batteries completely rusted/corroded within 45 days again, and again device quit working. Obviously this unit’s battery compartment is not waterproof. Frustrating!

post by bgorbet on Oct 24, 2024

Same problem. I’ve only had this device a few months and its already all corroded inside. Doesn’t seem like the waterproofing works well enough

post by PamL on Nov 18, 2024

I have only 1 timer and I have the same problem with it flooding and the batteries corroding.

post by Jkuri on Dec 15, 2024

Hello,

I seem to have a similar problem with the battery compartment. When I went to swap out the batteries the compartment had water inside.

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post by franz on Dec 16, 2024

@Jkuri I’ll have someone from our support team reach out to you. Thank you for bringing this to our attention.

post by Jkuri on Dec 31, 2024

As a follow up and some may find this useful.

The support team did reach out and solved my issue quickly and easily and I am back up and operational.

post by rhawley on Mar 20, 2025

I’m having the same issue with internal flooding while my other timer is perfect

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post by Davico on Apr 22, 2025

I have the same issue in one of my devices, but both of them are not working as expected anymore. Water leaks from inside the device

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post by ecobuilding on Apr 28, 2025

Hi- I too am having the flooding issue. The two valves I’m running were showing as disconnected and I found the flooding when I thought it was a battery issue. I turned out the two screws holding the battery compartment to the valve body. The design is such that the flooding was confined to the battery compartment, and the circuit board and solenoid are sealed. Tried to capture in the photos.

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post by wodentx on Apr 30, 2025

Wish I would have searched here before throwing my old one away that was 14 months old a few weeks ago. The responses being provided sure do instill confidence!

I too had internal flooding into the battery compartment.

post by cmschoell on May 9, 2025

Same here. Just replaced my batteries for the first time and I have the same little pool in the battery compartment, corrosion, etc. Poor design for an outdoor product.

post by Thomas_Lerman on May 9, 2025

Mine has not leaked at all and I have changed the batteries at least a couple of times.

post by Xempt on May 11, 2025

I’m having this same issue. My battery compartment was secured but it is now corroded inside and not working.

post by franz on May 12, 2025

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

post by Fymaxwell on May 12, 2025

Hi! I started this thread, and now I’m having the exact same problem with yet another of my smart hose timers. Note that this is the last remaining unit from the initial product release.

post by dcampbell386 on Jun 24, 2025

I have (2) timers and both are having internal flooding and the batteries are completely eroded. What do I do?

post by uncgal10 on Jun 30, 2025

Oh wow, I am not alone! My Rachio keeps internal flooding, I was able to clean up the rust to get it to work again but it has not only rusted again now corroding the battery contacts. will be reaching out to support on this based on this thread.

post by jeffbankston on Jul 4, 2025

I’ve had the same problem, it almost killed a couple of my potted plants when it stopped working. Rachio sent me a new unit (kudos on that).

post by Justinappleby on Aug 20, 2025

Same problem here. The battery compartment flooded and corroded the batteries and the internal terminals.

post by tkbrigham on Aug 21, 2025

Hi Franz - would you connect me as well? Thanks!

post by Mck123456 on Sep 20, 2025

Hello, I am having the same issue. Could you send me to customer support / success team as well? Thank you!

post by Peterachio on Oct 4, 2025

Same exact issue, can you please connect me with customer service?

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.

post by jlpatinop78 on Dec 28, 2025

Merry Christmas! I love this product but I am experiencing the same exact challenge, moisture is consistently found inside the battery compartment.