# Resin sensor level error

**URL:** <https://forum.formlabs.com/t/resin-sensor-level-error/31783>\
**Category:** Form 3/3+\
**Created:** [August 21, 2021, 3:11pm UTC](https://forum.formlabs.com/t/resin-sensor-level-error/31783 "2021-08-21T15:11:00Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![horburyd](https://avatars.discourse-cdn.com/v4/letter/h/df788c/32.png) [@horburyd](https://forum.formlabs.com/u/horburyd)\
**Post date:** [August 21, 2021, 3:11pm UTC](https://forum.formlabs.com/t/resin-sensor-level-error/31783/1 "2021-08-21T15:11:00Z")

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i have a resin sensor level error . This stops the printer from printing and there appears no over ride anywhere. I have swopped the resin the tanks and stipp the same . There is no dirt on the inter face between the sensor on the machine and the tank.

Any one any ideas

David

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**Author:** ![Jackson](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/jackson/32/17924_2.png) [@Jackson](https://forum.formlabs.com/u/Jackson)\
**Post date:** [August 21, 2021, 8:18pm UTC](https://forum.formlabs.com/t/resin-sensor-level-error/31783/2 "2021-08-21T20:18:27Z")

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Hi @horburyd,

I’m so sorry you ran into this issue! Here’s a couple of things that you can try (as per our [official support article](https://support.formlabs.com/s/article/Form-3-error-messages?language=en_US#resin-level-sensor-error)):

- Ensure that the [printer is level](https://support.formlabs.com/s/article/Level-the-Form-2).
- [Inspect the resin tank](https://support.formlabs.com/s/article/Maintaining-the-Resin-Tank-Form3):
  - Remove the resin tank.
  - Check that the [float](https://support.formlabs.com/s/article/Product-glossary-Form-3#resin-tank) can move freely.
  - Reinsert and push the tank all the way back. The touchscreen displays a confirmation message when the resin tank is properly seated.

- Inspect the LevelSense board:
  - Remove the resin tank.
  - Inspect the [LevelSense board](https://support.formlabs.com/s/article/Product-glossary-Form-3#levelsense). Contact [Formlabs Support](https://support.formlabs.com/s/contact-support) if you see any damage.

- Recalibrate the LevelSense board:
  - Tap the wrench icon on the printer’s touchscreen. The **Settings** screen appears.
  - Tap **Maintenance**. The **Maintenance** screen appears.
  - Tap **Resin Level Calibration**.
  - Follow the on-screen instructions:
    - Tap **Next** to start the calibration process.
    - Remove the resin tank from the printer (if one is inserted) and tap **Next**.
    - Close the printer cover and tap **Calibrate**.
    - Once the calibration process is complete, tap **Done**.

If you’re still seeing the error after trying the above, please [contact our support team](https://support.formlabs.com/s/contact-support)! They’ll be happy take to take a closer look at what might be going on and get you back to printing successfully.

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**Author:** ![horburyd](https://avatars.discourse-cdn.com/v4/letter/h/df788c/32.png) [@horburyd](https://forum.formlabs.com/u/horburyd)\
**Post date:** [August 22, 2021, 8:58am UTC](https://forum.formlabs.com/t/resin-sensor-level-error/31783/3 "2021-08-22T08:58:51Z")

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i have tried all that. What is wierd is that if i remove the float mechanism in the tank the print completes

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**Author:** ![chrisjdraw](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/chrisjdraw/32/17036_2.png) [@chrisjdraw](https://forum.formlabs.com/u/chrisjdraw)\
**Post date:** [November 8, 2021, 2:59pm UTC](https://forum.formlabs.com/t/resin-sensor-level-error/31783/4 "2021-11-08T14:59:51Z")

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I used a Cotton Bud soaked in IPA to clean behind the Flat area of the float where it passes close to the tank wall. This helped my machine see through a very thin film of resin on the side wall of the tank. Whenever I start a new print I check the area around this flat and the side wall are very clean.  
Hope this helps, All the Best Chris