After turning the power off and then back on, the digital swamp cooler thermostat started blinking. There is a hole marked "reset," with a recessed button, that I pressed and held, repeatedly with the little rod that came with the unit. No luck.
Finally, I decided to to try to remove the cover and replace the battery. Couldn't pry off the cover! Tried screwdrivers, pocket knives. I'm sure there must be a way to remove this cover, but I didn't want to break the damn thing.
BTW, it's a 2 yo unit, and they no longer have the instruction booklet.
It's a "Dial" brand thermostat.
It's not urgent, cuz it's still snowing here, but if anyone has ever dealt with this brand of thermostat, I'm open to suggestions.