HOW DO YOU CLEAN THE FILTER IN A MDBH979AWS3

Open the dryer door and look down at the front edge where the door would be when closed. There should be a plastic vent style panel. This should pull up and out. Once out it should unclick with a light pull and open like a book, hinged on the bottom edge. This is the lint filter and should be simple to clean.
2 or 3 times a year I give this a firm, gentle clean with a SOFT nail brush to clear the skin of the filter.

Wash your HEPA filter with warm water and allow it to dry if your model specifically states that water cleaning is safe. You can also soak your filter in hot water if it is extremely dirty. Clean non-washable, permanent HEPA filters using a vacuum to remove dust and debris.

That clean filter symbol is just a reminder to clean the filter after every dryer load--I'm assuming this unit is a dryer, however it's listed under washing machines.

Good Afternoon Friend, that's a great question!

Typically the FILTER RESET light will illuminate after 250 hours of operation. To locate the filter, remove the bucket and the pull filter downwards. The filter can be clean by using clean water or vacuum cleaner extension hose. If you use clean water, please allow the filter to dry. Once you reinstalled the filter then replace the bucket. To extinguish the light simply press the FILTER button and your dehumidifier should resume normal operations. Remember it is best to clean your filter every two weeks based on normal operating conditions. Hope this helps! - Z

You need to reset the filter timer. Press the "options" button, then "3" for filter timer, then "start". The filter timer should now be reset and you shouldn't see it say clean filter anymore. Hope this helps.

The filter and compartment are only a portion of the exhaust system. Make sure you clean the pipe from the dryer to the out doors and clean the exhaust fan below the filter.
Good luck.

not sure if there is a reset button if not

I would say if the filter was bad enough some of the foreign materials (particles the filter should capture) may have went on down the line.

the "clean filter" indicator is most likely activated by the volume of flow. So when the filter is full the flow is reduced in turn the "clean filter" comes on.

so if filter has been replaced and there is no reset button try backflushing the lines. If the lines have built up blockage your flow will stay low and the "clean filter" will stay on.

on these lines there may be bends and turns most likely to have build up in these areas restricting your flow

clean lines (low air pressure may work easiest)

dear sir/mam
clean pump means we should clean the filter provided in the pump line,in some models filter will be located inner bottom of the washing machine and outer bottom of the washing machine so please check it and clean the filter.

Yes to get the clean filter light to go off, you have to clean filter, put back in the machine, and hold down the power button for 3 secs to reset it. the clean filter light will go off!