I need to find the water strainer on my machine water is flowing slowly

A model number would be handy...
Take it the thing fills OK (possibly a bit slowly?)

Unboosted machine look at water pressure/flow (clogged strainer; shared supply; scaled boiler outlet);
Boosted machine look at booster pump (motor dead; impeller broken; capacitor failed)

FH is Fill Hose error. Turn off water supply and disconnect hoses from back of machine, clean off strainers on back of machine where hoses connect and make sure you have water coming through hose. ( you can turn the water on slowly one hose first then the other and catch the water in a pot or mop bucket. You should have a steady water flow.) hook hoses back up, turn on water and test.

If you need further help, reach me via phone at https://www.6ya.com/expert/steven_a67ead41eb5fc62a

Check the inlet water flow to the machine. Clean the strainer attached to the junction of the rubber hose and the machine.

The strainer is submerged in the machine body. Pull it by hand and clean. It is small in size.

Every faucet and shower have a water saving restricter in them. Remove them from the shower head and end of the faucets.
They are about the size of a dime and with about 1/8" hole in them in which water flows out. So the flow is getting restricted from 1/2' flow to this giving you a water saving about a 1.5 gpm.

Below is some more information for the web site please check it out for further help.
http://www.inspectapedia.com/water/Poor-Water-Pressure-Diagnosis.htm
Poor water pressure just at certain plumbing fixtures? poor cold water pressure, hot water pressure, or both hot and cold water pressure or flow that is observed just at some plumbing fixtures in a building while flow and quantity are good at others suggests that the water flow or pressure problems are local to certain runs of supply piping or to the specific fixtures. Check the following first:

1. Clogged aerator or strainer on sink faucets - clogging by dirt, debris, corrosion, can significantly reduce both hot and cold water flow at a sink where the strainer needs cleaning or replacement. Unscrew the strainer from the faucet and turn on the water - if the fixture pressure or flow is much better you've probably found the problem.
   
   Look at the aerator/strainer: inspect it, clean it, perhaps soaking it overnight in vinegar to remove corrosion and mineral build-up, or just install a new aerator/strainer.

Slow fill of water is due to the strainer clogging. Strainer is located on the body of the machine where the inlet water hose is connected.

Clean all the water flow tubes in the machine.Clean the solenoid valve opening also.

Check inlet water supply for free flow. check strainer for blockage. Strainer is located at the machine body water inlet tube entry side.

Check the cutoff valves under the sink to be sure they are fully open. One could have gotten bumped when putting something away. This is particularly likely if only the hot OR cold is running slowly but not both.

1. Suction strainer with checkvalve must be always
under water.
2. Check the suction checkvalve if holds water. Water
must remain steady when primed.
3. Open the priming port, and fill it full with water.
4. Close the flow control valve.
5. Switch the power on and start the pump.
6. Then, slowly open the flow control valve, to the
level such that it will not break suction, and
stabilized the water flow..

This is what I found for the E4 code...hope this helps...and thanks for rating my effort...The Fang.


Machine won't fill or won't fill high enough(LX18, LX30 display shows "E0," "E2," "E3," or "E4")

1.Low water pressure — check for clogged hose strainer; check that site water pressure meets minimum flow pressures.
2.Make sure probes are clean.
3.No water pressure — main water supply valves may not be working.
4.Drain valve open - turn machine off to drain machine, then on. Repeat twice (this assists in clearing any drain valve obstructions). Wait for machine to reach READY mode and press WASH. Slowly open door several seconds later and note water level. Close door; 30 seconds later, open door slowly and check that water level is the same as it was. If not, repeat the
OFF-ON procedure.
5. Delime machine.

This is what I found in the manual...and on a couple of other sites....

Machine won't fill or won't fill high enough(LX18, LX30 display shows "E0," "E2," "E3," or "E4")

1.Low water pressure — check for clogged hose strainer; check that site water pressure meets minimum flow pressures.
2.Make sure probes are clean.
3.No water pressure — main water supply valves may not be working.
4.Drain valve open - turn machine off to drain machine, then on. Repeat twice (this assists in clearing any drain valve obstructions). Wait for machine to reach READY mode and press WASH. Slowly open door several seconds later and note water level. Close door; 30 seconds later, open door slowly and check that water level is the same as it was. If not, repeat the
OFF-ON procedure.
5. Delime machine.

If this doesn't help let me know and I will get to the bottom of it....good luck and thanks for rating my effort...The Fang.