Hello!

I've been trying to replace the dimmer to my living room. I installed a LED lamp and it's not compatible with the old one.

However, my new dimmer symbols doesn't match the old one. I've tried a bunch of combinations without success. I have changed dimmers in 3 other places without issue, but the main difference in this one is the 2 cables going into the same L(up) port.

Could someone help me with which cable should go where?

The old one has 1 cable for AC and 2 going into L(up). Cable colour doesn't seem to correlate to anything.

The new one has ports for Load Input (2x), Load output, Push Switch and Neutral input.
 
TL;DR
Trying to change dimmer, but i don't know which symbol matches the new one.

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Your old dimmer has two wires in the L incoming terminals on the right; presumably one goes off to feed power elsewhere.
The terminal on the left is the L (dimmed) feed out to the light - that is assuming it's wired as per the symbols on the dimmer.

You are trying to replace the old dimmer with one that requires a neutral wire. If there are no other cables in the pattress, you don't appear to have that Neutral !
If there are no instructions with your new dimmer on how to wire it when there is no Neutral available, you will need to replace the new dimmer with one that does not require a neutral. That may bring with it a side effect of the light glowing dimly, or ocassionally flashing. If that turns out to be the case, there are remedies.
 
Your old dimmer has two wires in the L incoming terminals on the right; presumably one goes off to feed power elsewhere.
The terminal on the left is the L (dimmed) feed out to the light - that is assuming it's wired as per the symbols on the dimmer.

You are trying to replace the old dimmer with one that requires a neutral wire. If there are no other cables in the pattress, you don't appear to have that Neutral !
If there are no instructions with your new dimmer on how to wire it when there is no Neutral available, you will need to replace the new dimmer with one that does not require a neutral. That may bring with it a side effect of the light glowing dimly, or ocassionally flashing. If that turns out to be the case, there are remedies.
Thank you. I guess i'll have to return this dimmer and find one without the Neutral.

Thanks a lot for the help!
 

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Dimmer replacement
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DIY Electrical Advice
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Stiller,
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