Somfy RTS - 433 issue out of the blue

Questions & Help
1

Since today my Homey Pro is showing “Sent Too Many 433 MHz Commands” when trying to use any of my Somfy blinds.

For reference I am using

And only have the old school Somfy remote, which in itself just works.

I have tried restarting the app.
I have tried restarting my homey. (Model Homey Pro (Early 2023) version 13.5.4)
I have tried disconnecting a blinds power source.
I have tried removing and re-adding the blind (which worked as the blind moved up and down).
I have tried removing the app together.

But the error remains “Sent Too Many 433 MHz Commands”.
While as stated the remote is working fine.

Anybody have a clue on what/how to fix this issue?

EDIT 1 - PS: Have also send in a support ticket for this.

EDIT 2;

Also done the following as requested by support;

  • I have temporarily disabled any Flows that control Somfy (Done), KlikAanKlikUit (dont have that), Trust Smart Home (dont have that), or other 433 MHz devices (literally dont have any that use the protocol except the Somfy blinds)

  • Checked for Flow loops or quick repeats. If you send several Up/Down commands, add a delay of a few seconds between them.

Nope they only ever use a Go up or Go down command.

  • After pausing those Flows, wait about an hour to let the 433 MHz rate‑limit fully reset, then test a single Somfy command again from the device tile.

Did that, same result. Have included the screenshot from the webapp to confirm.

  • Keep the number of quick consecutive commands to a minimum going forward.

Nothing to change on that front.

If the error still appeared after the cooldown and with all 433‑related Flows paused, please share:

  • A screenshot of the error in the Homey app.

Sent that in the attachment.

  • The Somfy RTS app diagnostics code: Homey app > More > Apps > Somfy RTS > gear icon > Create Diagnostics Report, then share the code you receive.

Diagnostics code; f010306c-52ff-4312-9dec-6e49d482ef21

  • Which Somfy motor and remote model you use, and when the error occurs.

Yeah good one … not something I can really easily check on the blinds.
Only clear thing I can tell is about the remote, a Somfy Telis 4 RTS Pure
(The old model like; https://www.tuson.nl/media/855x855/overlay/908-somfy-handzender-telis-4-rts-pure.jpg)

Besides the above;

I also tested using: Homey Developer Tools
Homey does not seem to see the commands from the remote.

I also tried using: Homey Developer Tools
And changing the stated but they also result in the same error; Sent Too Many 433 MHz Commands

So that is where we stand currently.

2

I experienced the same issue with my new Pro 2026, 433MHz never worked. I was offered to swap my Pro with an other one.
My advice would be to contact Athom support https://homey.app/support/

3

Thanks for sharing. Mine always worked but started acting up since last night approximately.
Im guessing something is up with the 433 mhz protocol, but no clear idea on what to do further. hope support gets back to my ticket (which includes the above input)