Aug 16, 2017 · Reset the Control Panel: Like a computer's memory chip or a DSL modem, an air conditioner control panel gets corrupted by continuous use and has to be reset.For GE models, as well as others, all you have to do is unplug the unit, leave it unplugged for at least 1 minute, and plug it back in. Every time I run my dishwasher, it runs and stops and gives me the PF (power failure) code. I have never had a power failure in my house when the PF code shows up. Due to the wide variety of different Whirlpool dishwashers available the error/fault codes will be displayed differently depending on which model you own. If your dishwasher has an LCD display then the fault code will be displayed like below. Even a clogged drain or sump can trigger a C4 code, according to GE. Sometimes you can simply reset the dishwasher to clear the code. Other times, it may need "fixing" to clear it.