It depends on the cause of the water pressure issue. I'd first check your incoming water to the washer. Turn off the inlet shut-off valves and disconnect the hoses. Check the hose filters and the inlet valve filters. Remove any debris. Next put a large bucket under the shut-off valves and open them fully for a minute. Check how much water flows into the bucket. If very little water was in your bucket, you'll need to check where the restriction is in your water lines. (The water pressure needs to be sufficient to fill the washer in about 8 minutes. Depending on your home, you may need a professional to check the water at your water connection to the city or at your well pump.) Empty the bucket. Replace your inlet hoses at the valve side and repeat the test. If you are getting low water flow with the hoses in place, replace the hoses. Some hoses have a "anti-flood" feature which restricts the hose if there is a problem. (I've seen the hot water flow rate to the washer significantly decrease due to the hose blocking the flow. The cold water hose was replaced at the same time to avoid it failing in a short time.)
Next check that the drain hose isn't below the level of the water in the washer. This can cause siphoning and empties the washer as fast as it fills.
If the water pressure is still low after testing these items, the problem could be the inlet valves on the washer or the air pressure at sensor that detects the water flow. On some washers, you may be able to remove the debris in the air tube. However, if there is a pinhole, that part will need to be replaced.
I hope this helps.
Cindy Wells
Make sure you have a good connection and kink free hose from your water outlet to the machine and make sure the outlet is fully open.
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