Hi,
An F-1 is a fault code that comes on when you have accumulated at least 1/8 of water in the base pan under the drawer. You have two options, first one you can unplug unit from the power source and allow the air in the room to dry it out or while unplugged you can remove the drawer by releasing the tabs on the bottom of the lowest drawer and slide out the drawer to remove the water. There are a couple of different models and you didn't leave a model number to allow me to send diagrams too.
The true fix is to determine why the base pan is collecting water, here is a couple of common issue that could create this problem, drawer too full and seal to drawer did not seal, too much soap, bad seal to lid (that covers drawer during wash) or the hoses in the back of the drawer have came loose and prevent the lid to lower and cover the drawer.
I hope this helps...
If you need more help let me know and I can give you pictures, parts lists, and step by step instruction with the model number located on the rim of the upper drawer open..
I’m happy to help further over the phone at
https://www.6ya.com/expert/gere_bf68e6055dd61249
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