My check filter light is on on my window unit and it blows out "chunks" of black stuff. I need to know how to clean it real good to avoid this problem,
Take out the filter and pour water on the oposite side that is the dirt,if the water is not enough use degreaser and also clean thefront cover where the filter goes.
Make sure you reset the unit after you clean the filter. These air conditioners are notorious for not turning off the "check filter" light. You should already be unplugging the machine to clean it, so it's not really an extra step. Also, the filter needs to be placed just right to reset the sensors.
Thermax Refrigeration and Heating Ltd
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