# Somfy Tahoma suddenly returns "bad credentials" **URL:** \ **Category:** Devices\ **Tags:** app\ **Created:** [July 29, 2019, 11:30am UTC](https://community.homey.app/t/somfy-tahoma-suddenly-returns-bad-credentials/16163 "2019-07-29T11:30:43Z")\ **Posts on this page:** 6\ **Page:** 3
**Author:** ![Marcel\_Valentijn](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/marcel_valentijn/32/20438_2.png) [@Marcel\_Valentijn](https://community.homey.app/u/Marcel_Valentijn)\ **Post date:** [November 7, 2020, 4:14pm UTC](https://community.homey.app/t/somfy-tahoma-suddenly-returns-bad-credentials/16163/41 "2020-11-07T16:14:28Z")
I just send in a new log. As you might can see, the On command of the Light var io did not came through. Now the setintensity came in after and got through. So the light were set to 10%. But some times the On command goes trough right and then the setintensity fails. So then when it is the opposite it will not dim to 10% and keep on at 100%. I don’t know why it also send an ON command, as only the setintensity also do the trick already to set it on to 10%. So maybe you do not need to send the ON command at the same time, as that is failing one or the other. Thank you very much. ---
**Author:** ![Adrian\_Rockall](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/adrian_rockall/32/13209_2.png) [@Adrian\_Rockall](https://community.homey.app/u/Adrian_Rockall)\ **Post date:** [November 7, 2020, 6:26pm UTC](https://community.homey.app/t/somfy-tahoma-suddenly-returns-bad-credentials/16163/42 "2020-11-07T18:26:23Z")
The Homey interface automatically sends the on and set dim levels so I have no control over that. I thought I had put a timer in the on command that is cancelled by the dim command. When I get to my PC I will check. ---
**Author:** ![Caseda](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/caseda/32/138695_2.png) [@Caseda](https://community.homey.app/u/Caseda)\ **Post date:** [November 7, 2020, 7:12pm UTC](https://community.homey.app/t/somfy-tahoma-suddenly-returns-bad-credentials/16163/43 "2020-11-07T19:12:09Z")
The onoff capability has a capabilitiesOptions for this: `"setOnDim": false` So it doesn’t also send an onoff. All zwave apps that have dimmers need to do the same. You can see the [fibaro app](https://github.com/athombv/com.fibaro/blob/master/drivers/FGD-212/driver.compose.json#L15) for an example where to put it ---
**Author:** ![Adrian\_Rockall](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/adrian_rockall/32/13209_2.png) [@Adrian\_Rockall](https://community.homey.app/u/Adrian_Rockall)\ **Post date:** [November 7, 2020, 8:02pm UTC](https://community.homey.app/t/somfy-tahoma-suddenly-returns-bad-credentials/16163/44 "2020-11-07T20:02:51Z")
Ah, cool. I didn’t know about that one. Thanks @Caseda ---
**Author:** ![Marcel\_Valentijn](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/marcel_valentijn/32/20438_2.png) [@Marcel\_Valentijn](https://community.homey.app/u/Marcel_Valentijn)\ **Post date:** [November 27, 2020, 1:19pm UTC](https://community.homey.app/t/somfy-tahoma-suddenly-returns-bad-credentials/16163/45 "2020-11-27T13:19:15Z")
Great, hope it can be set now to not sent a on command when it is send dimming command now. As I am already frustrated when I come home and my lightvar io is fully on 100% except of 10% ☹ ---
**Author:** ![Adrian\_Rockall](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/adrian_rockall/32/13209_2.png) [@Adrian\_Rockall](https://community.homey.app/u/Adrian_Rockall)\ **Post date:** [November 27, 2020, 2:20pm UTC](https://community.homey.app/t/somfy-tahoma-suddenly-returns-bad-credentials/16163/46 "2020-11-27T14:20:03Z")
That fix should be in the latest test version. [Previous page](https://community.homey.app/t/somfy-tahoma-suddenly-returns-bad-credentials/16163.md?page=2)