Some service companies should not be in business. If they can't fix a simple fault such as this or are too lazy to try they should give up the business. If I were you I would diconnect the drain hose from under the sink & put the end down into a bucket. Get someone to hold it while you slowly pour clean water into the top drawer & let it empty by gravity in to the bucket until it runs clear. Then put hose back on to pipe work under sink. Next make sure bottom tray under the bottom drawer is completely dry as any moisture here will bring up the F1 code. Once dry and the F1 code is gone then try running the drawer on power. Any problems give me an e-mail.
lincolnappliance@vodafone.co.nz, January 2009