I recently picked up a Hamilton Beach FlexBrew (49983) at the thrift store for $8. Not bad for a coffee maker that still costs $90 at Kohl’s, Target, Amazon, etc.
It worked when I plugged it in at the store, but after a thorough cleaning at home (without submerging!), when I plugged it back in, the display simply read E03. Sometimes when you get these errors with various electronics, you can plug the machine in while holding down a button or combination of buttons, and the machine will reset itself. I tried all kinds of combinations, and while I could get the error to change to E08, I couldn’t make it go away.
I assumed the error was a result of water getting in somewhere it shouldn’t have while cleaning the coffee maker, so I waited several days for the unit to dry out. After three days, the E03 error persisted.
There is no information regarding this error (or any error) on the Hamilton Beach website, and from what I can glean from reports from customers who have contacted Hamilton Beach directly, they won’t tell you what any of the error codes mean. It seems like Hamilton Beach should post a list of error codes so that people (or at least technicians) can diagnose what is wrong.
Since I couldn’t find any information on the web, I tore the machine apart looking for loose wires or broken solder connections, but I found nothing.
However, while working on the machine, some strange combination of actions “released” a bunch of water from the spout on the single cup side. The water had not come out when I simply turned the machine upside down, but when I turned the machine over and over while looking for screws to open it up, I must have turned it in a way that allowed the water to come out.
So… it would seem the E03 error has something to do with water being trapped in a reservoir or tube somewhere, and that water can’t be drained simply by turning the machine upside down. Thus, the “fix” is to turn the machine over and over in all directions, until water comes pouring out of the single serve side spout.