# Setting the temperature difference Sidewinder X1 **URL:** \ **Category:** General Discussion\ **Created:** [November 20, 2023, 6:25am UTC](https://klipper.discourse.group/t/setting-the-temperature-difference-sidewinder-x1/11726 "2023-11-20T06:25:18Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![mmx74](https://avatars.discourse-cdn.com/v4/letter/m/cdc98d/32.png) [@mmx74](https://klipper.discourse.group/u/mmx74)\ **Post date:** [November 20, 2023, 6:25am UTC](https://klipper.discourse.group/t/setting-the-temperature-difference-sidewinder-x1/11726/1 "2023-11-20T06:25:18Z")
### Basic Information: Printer Model: Sidewinder X1 MCU / Printerboard: `klippy.log` _Fill out above information and_ **_in all cases attach your_ `klippy.log` _file_** (use zip to compress it, if too big). _Pasting your_ `printer.cfg` _is **not** needed_ _ **Be sure to check our “Knowledge Base” Category first. Most relevant items, e.g. error messages, are covered there** _ ### Describe your issue: I have the problem that the actual temperatures of my Sidewinder X1 do not match the set temperatures. e.g. bed temperature set to 65 degrees - actual temperature 55 degrees. Nozzle set to 220 degrees - actually 195 degrees. I have already done PID tuning. I have also already changed the temperature sensor. Unfortunately no improvement. Is it possible to set such a difference deviation in the config? ---
**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\ **Post date:** [November 20, 2023, 7:43am UTC](https://klipper.discourse.group/t/setting-the-temperature-difference-sidewinder-x1/11726/2 "2023-11-20T07:43:03Z")
> [@mmx74](#): > > Is it possible to set such a difference deviation in the config? Usually not and since you ignored the request for the klippy.log we also cannot check ---
**Author:** ![mmx74](https://avatars.discourse-cdn.com/v4/letter/m/cdc98d/32.png) [@mmx74](https://klipper.discourse.group/u/mmx74)\ **Post date:** [November 20, 2023, 3:24pm UTC](https://klipper.discourse.group/t/setting-the-temperature-difference-sidewinder-x1/11726/3 "2023-11-20T15:24:35Z")
ah sorry - i forgot… here is the log [klippy.zip](https://klipper.discourse.group/uploads/short-url/62iwADDUdirmT76ta7bwEchmlCU.zip) (1.2 MB) ---
**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\ **Post date:** [November 20, 2023, 5:06pm UTC](https://klipper.discourse.group/t/setting-the-temperature-difference-sidewinder-x1/11726/4 "2023-11-20T17:06:49Z")
This is a very strange log and it contains an error that is really rare: `MCU 'mcu' shutdown: Watchdog timer!` This means that in the MCU something went wrong, leaving it in a “confused” state. Given this error and your strange heating problem, I’d put my money on a dead or dying PSU. Turn on both heaters and measure the output side of your power supply. If it reads significantly below 24V then you have your culprit. Edit: Mind this when working on your PSU: [Working with Line Voltage (110 V / 230 V / \>50 V)](https://klipper.discourse.group/t/working-with-line-voltage-110-v-230-v-50-v/10805) ---
**Author:** ![mmx74](https://avatars.discourse-cdn.com/v4/letter/m/cdc98d/32.png) [@mmx74](https://klipper.discourse.group/u/mmx74)\ **Post date:** [November 20, 2023, 7:01pm UTC](https://klipper.discourse.group/t/setting-the-temperature-difference-sidewinder-x1/11726/5 "2023-11-20T19:01:37Z")
Hi, i think tha’s not the problem. I’ve measured the powersupply while heating the nozzle to 200° and the bed to 50°. the voltage was constant 24,0 V. And the difference between set an real temp is still ca 10%. Any other idea? ---
**Author:** ![EddyMI3D](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/eddymi3d/32/1981_2.png) [@EddyMI3D](https://klipper.discourse.group/u/EddyMI3D)\ **Post date:** [November 20, 2023, 8:21pm UTC](https://klipper.discourse.group/t/setting-the-temperature-difference-sidewinder-x1/11726/6 "2023-11-20T20:21:37Z")
~~Is the bed heater mains powered and controlled by a SSR?~~ In the second run the bed even does not reach 30°C. I’m wondering the thermal runaway protection does not kick in. * * * Edit: As for an ad, the printer has a mains powered heated bed. Take in consideration that the SSR is broken. ---
**Author:** ![mykepredko](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/mykepredko/32/2085_2.png) [@mykepredko](https://klipper.discourse.group/u/mykepredko)\ **Post date:** [November 20, 2023, 9:00pm UTC](https://klipper.discourse.group/t/setting-the-temperature-difference-sidewinder-x1/11726/7 "2023-11-20T21:00:09Z")
You might want to edit your first line - I was taken aback at the idea that the bed heater was controlled by an “SSD”. ---
**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\ **Post date:** [November 21, 2023, 6:59am UTC](https://klipper.discourse.group/t/setting-the-temperature-difference-sidewinder-x1/11726/8 "2023-11-21T06:59:32Z")
> [@mmx74](#): > > the voltage was constant 24,0 V That’s kind of “unfortunate”, since it would have been a straight forward solution. Try building a new firmware for your board and flash it. Compare the version strings in web interface or klippy.log to make sure you are really running a newer version, i.e. the flash indeed succeeded. If the error is reproducible still then report back with a new klippy.log. Ideally a shorter one only showing the problematic behavior. This means delete the old log, restart whole Klipper service and then try reproducing (do **not** manually edit logs) ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\ **Post date:** [January 20, 2024, 7:00am UTC](https://klipper.discourse.group/t/setting-the-temperature-difference-sidewinder-x1/11726/9 "2024-01-20T07:00:08Z")
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