YRD226/YRD410 with new black ZW3 module — completely unresponsive, extreme battery drain, C-8 Pro

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1

I'm managing several vacation rental properties in Florida remotely from Germany and have just installed new Yale locks (YRD226 / YRD410) with the new black Z-Wave module (ZW3 / 700-series chip). These locks are causing serious operational problems and I need urgent help.

Hardware:

  • Hubitat C-8 Pro, firmware 2.4.3.177 / 2.4.4.156

  • Yale YRD226 and YRD410 with the new black ZW3 module (Z-Wave Classic, Protocol 4.24)

  • Paired with S2 Authenticated

Symptoms:

  1. Completely unresponsive via Z-Wave — even a basic unlock() command fails after 5 retries, from only 3 meters away from the hub. No interference, direct line of sight.

  2. All UserCodeGet commands time out — running getCodes causes every single slot (1–50) to time out with retries. The lock does not respond to GET commands at all.

  3. Extreme battery drain — brand new batteries (installed one week ago) are already significantly depleted. The lock appears to wake up for incoming Z-Wave frames but responses never reach the hub, causing the hub to retry repeatedly.

  4. setCode / deleteCode unreliable — commands are sent but no UserCodeReport confirmation is ever received. Codes may or may not be physically on the lock — there is no way to verify.

Log excerpt (lock 3m from hub):

warn — unlock() command failed after 5 retries
warn — timed out fetching code:1, retry 1 of 2
warn — timed out fetching code:1, retry 2 of 2
warn — timed out fetching code:1, skipping after 2 retries
warn — timed out fetching code:2, retry 1 of 2
... (same for slots 2–25)

Important: Older Yale locks (YRD410 with the previous silver/grey Z-Wave module) work perfectly on the same hubs at the same properties. The problem is exclusively with the new black ZW3 module.

Impact: Guests are checking in and cannot enter because access codes cannot be reliably programmed. I am unable to physically access the properties from Europe to intervene.

Questions:

  1. Is there a known compatibility issue between the Hubitat C-8 Pro Z-Wave stack and Yale's new ZW3 (700-series) module?

  2. Is there a beta firmware that addresses Z-Wave 700-series timing/ACK issues?

  3. Are there Z-Wave timing parameters on the C-8 Pro that can be tuned for better compatibility?

  4. Has anyone successfully used Yale YRD226/YRD410 with the new black module on a C-8 Pro?

Any help is greatly appreciated — this is an active emergency situation.

2

Highly unlikely but did you check your Z-wave table for ghosts? Other than that, I can’t imagine why.

@bcopeland any ideas to help out “das lockenschloss”?

3

The driver is hammering the lock with get code requests which fail so is depleting the battery. Once begun the only way I could find to stop it was a hub reboot. Stopping the driver only pauses the loop until the driver is next enabled and it then carries on as before. Then don't use get code again. I had that on my Kwikset lock. If you have the driver source code (user driver) you can submit it to an AI like Claude with a bug description and use case. I have had great success in patching user drivers to fix bugs.