Today's modern machines use far LESS WATER than their old previous models all to do with economy and environment issues I'm afraid, the days of water halfway up the port hole have gone.
just a thought! check the pressure chamber hole is not blocked, the plastic pipe is attached to the pressure switch under the lid follow this plastic pipe down to the pressure chamber, remove pipe check if hole is blocked clean out if need be. reassemble and try
wirecutterman, June 2009