Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Did not work with tap water in San Francisco

I'm going to repeat what a previous reviewer said: it is possible that you're going to need filtered/bottled water for this to work.I got the F1 code with only tap water in the spray bottle a bunch of times. I found trouble shooting instructions on the website that said to try bottled water for at least two cycles (first cycle to clean out the sensor).I did and BAM! Worked great. The processed water was also fantastic on a couple of stains that I tested it on. I tried tap water again, and it still didn't work. At this point the website tells you to forever use filtered or bottled water.I couldn't really be bothered to set up a water filtration system just to make this appliance happy, so I returned it. Amazon gave me a full refund and didn't charge me for shipping.If you're a patient person, it may be worth a try.