Another potential problem is if your water pressure falls too low. Usually this is from a filter that needs to be replaced or perhaps mineral deposits. To test if it is your filter, take it out and then hit the reset button. If that doesn’t do it, unplug your fridge or turn off the circuit breaker for 2 min. When you power it back on, try the reset button again. This solved the problem for me. Time to get a new filter!