replace the float valve in the water tray
evaporate coolers work by pumping water onto a screen through which air is blown
the hot air evaporates the water in the screen and the air out is cooler
works very well in hot dry climates but not so well when the humidity is above 80%
Probably needs burner pot cleaned out, common thing to do.
Its a 40 series oil heater, only had single knob, air adjust is automatically set by internal controls.
where abouts are you.
I have some parts and manuals still
Obviously a direct short. Take pic, remove all wires, replace fuse. Wire by wire, turning power back on each time until fuse pops. When it does, there's your problem. If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79
