# Need help : Filament sensor error

**URL:** <https://forum.sovol3d.com/t/need-help-filament-sensor-error/4364>\
**Category:** Sovol SV04 IDEX\
**Created:** [January 21, 2024, 3:46pm UTC](https://forum.sovol3d.com/t/need-help-filament-sensor-error/4364 "2024-01-21T15:46:49Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![MaRiO](https://avatars.discourse-cdn.com/v4/letter/m/8e7dd6/32.png) [@MaRiO](https://forum.sovol3d.com/u/MaRiO)\
**Post date:** [January 21, 2024, 3:46pm UTC](https://forum.sovol3d.com/t/need-help-filament-sensor-error/4364/1 "2024-01-21T15:46:49Z")

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Hi there, I recently bought a SV04. I have a problem, first everything worked fine, but when I try to print with my left extruder/printhead I get the message: _Click Yes to heat andchange filament or No to stop print_  
The right extruder/printhead works fine, so I think there is a problem with my left filament run out sensor. I hear the relais clicking when I put filament in the runout sensor, so the relais switch is probably working.  
Can you help me with this problem?

Regards, Mario Reget

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**Author:** ![mich0111](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/mich0111/32/1176_2.png) [@mich0111](https://forum.sovol3d.com/u/mich0111)\
**Post date:** [January 21, 2024, 6:22pm UTC](https://forum.sovol3d.com/t/need-help-filament-sensor-error/4364/2 "2024-01-21T18:22:06Z")

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Hi,  
Could you tell us if the runout detector has the blue led on when you insert filament ?

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**Author:** ![MaRiO](https://avatars.discourse-cdn.com/v4/letter/m/8e7dd6/32.png) [@MaRiO](https://forum.sovol3d.com/u/MaRiO)\
**Post date:** [January 21, 2024, 7:30pm UTC](https://forum.sovol3d.com/t/need-help-filament-sensor-error/4364/3 "2024-01-21T19:30:34Z")

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Hi,  
I disassembled the runout detector, and assembled it again, and now it works??  
Maybe an electronic hick-up?  
But it works, thanks for your quick reply  
MarioReget

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**Author:** ![Mindless](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.sovol3d.com/mindless/32/1196_2.png) [@Mindless](https://forum.sovol3d.com/u/Mindless)\
**Post date:** [January 22, 2024, 11:05am UTC](https://forum.sovol3d.com/t/need-help-filament-sensor-error/4364/4 "2024-01-22T11:05:08Z")

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Hello, bit of a late reply

But if it plays up again you can just unplug the run-out sensor and the Printer will work fine without it until you can fix it or get a Replacement switch-.

All the Best-.

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**Author:** ![MaRiO](https://avatars.discourse-cdn.com/v4/letter/m/8e7dd6/32.png) [@MaRiO](https://forum.sovol3d.com/u/MaRiO)\
**Post date:** [January 22, 2024, 1:11pm UTC](https://forum.sovol3d.com/t/need-help-filament-sensor-error/4364/5 "2024-01-22T13:11:25Z")

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Thanks for your reply…