Customer Questions and Answers for Electronic Control Board by Whirlpool

Hello Ron. The F-20 is for NO WATER DETECTED ENTERING MACHINE OR PRESSURE SWITCH TRIP NOT DETECTED. If after 30 seconds not minimum 0.1l of water entered or maximum fill time of 16 minutes is exceeded, the valves will be turned off and the error code will be displayed. 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 that the pressure switch hose is in good condition and properly connected to tub and pressure switch. 1. Unplug washer or disconnect power. 2. Verify there is not a siphon problem. 3. Verify wire harness connections to inlet valves, pressure switch, 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. The F21 code is LONG DRAIN. Possible Causes/Procedure 1. Check the drain hose and make sure it is not plugged or kinked. 2. Unplug washer or disconnect power. 3. Check the electrical connections at the pump and make sure the pump is running. 4. Check the drain pump filter for foreign objects. 5. Plug in washer or reconnect power. 6. If the above does not correct the problem, go to step 7. 7. Unplug washer or disconnect power. 8. Replace the pump.