What does it mean when it flashes FH on my washer

FH_ This will occur when No water is detected entering the machine or The pressure switch trip not detected.

If after 30 seconds the control does not detect water entering machine, the valves will be turned off and the error code will be displayed.
OR
If the control has turned the water valves on, and after 8 minutes, the flow sensor has detected 10.5 gallons of water passing through it, but has not detected the pressure switch trip, the valves will be turned off, and the error code will flash.

Press PAUSE/CANCEL twice to clear the display.

Possible Causes / Procedure

• If there is no water in the unit:
- Make sure that both valves at the water source(s) are turned on all the way.
- Check for plugged or kinked inlet hoses or plugged screens in the inlet valves.
- Verify inlet valve operation.

• If there is water in the unit:
- Verify drain pump operation.
- Verify that the pressure switch hose is in good condition and properly connected to tub
and pressure switch.

1. Verify there is not a siphon problem.
2. Unplug washer or disconnect power.
3. Verify wire harness connections to inlet valves, pressure switch, drain pump, flow meter,
and Central Control Unit (CCU).
4. Check all hoses for possible leaks.
5. Plug in washer or reconnect power.
6. Verify pressure switch operation.
7. Verify flow meter operation by blowing air through the part and measuring the resistance.
8. Verify CCU operation by running a Diagnostic test or any cycle.

Replace failed component.(Which will be the CCU, if the pressure switch and hose are operational. Follow the procedure below to confirm optimal pressure switch functions)


The water level switch(aka pressure switch), is responsible for regulating the water fill level in this situation. It does this through a plastic tube which runs from the switch in the control console down to the side of the outer tub, near the bottom . The tube is filled with air. As water enters the tub it also enters the tube. As water climbs inside the tube, it pushes on the air trapped inside and increases the air pressure. When the air pressure reaches a certain level, it triggers the switch.

I would advise to Inspect the air tube for kinks, breaks or damage. The tube should also be free of water. The tubing should be securely connected to the bottom of the outer tub and to the bottom of the water level switch. If there is water present, the switch must be replaced.

The water level switch has three connectors. Label and disconnect the wires from the switch. Test the switch for continuity using a multimeter. Set the multimeter to the ohms setting X1. It will be necessary to test each of the three possible pairs. replace the switch if it fails the continuity test.