F20 means either Hot or Cold water is taking too long to fill. remove hoses and fill into a buck to verify you have good household pressure. if not, call plumber to resolve. If hoses are putting out good pressure, inspect water valve screens, one or both may be partially clogged with sediment or sand. If they are clean, I recommend replacing the water valve.
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F20 means either Hot or Cold water is taking too long to fill. remove hoses and fill into a buck to verify you have good household pressure. if not, call plumber to resolve. If hoses are putting out good pressure, inspect water valve screens, one or both may be partially clogged with sediment or sand. If they are clean, I recommend replacing the water valve.