Thank you for a very good question. In order to clean the screens you will need to
to the washer first. Carefully pull the unit out to avoid floor damage. Turn the water faucets off. Have a bucket & some towels handy. Use a pair of pliers and remove the 2 fill hoses off the back of the washer, catching any drips with the towels. Place the two hoses in the bucket & turn the water back on slowly at first. If you do not have good water pressure you may have screens in the other end of the fill hoses. If you have good pressure then we know all you need is the screens cleaned or the watervalve replaced. Use a small flashlight to inspect the watervalve inlets for hot & cold. If the cold valve screen looks clogged you will need to clean & flush out the water lines. Use a small brush to scrape the screens clean (do not remove the screens). After cleaning & flushing out the lines you can reassemble the hoses & check the fill cycle for proper water flow. If you have good pressure & still have poor cold water flow then you will need to replace the watervalve.
disconnect the power
before attempting access.