Technical Manual

FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY20
TROUBLESHOOTING GUIDE
NOTE: Always check for Faults and Error Codes first. Some tests will require accessing components.
See figures. 7 & 8 for Component Locations. For detailed troubleshooting procedures, refer to “Troubleshooting Tests.”
Problem Possible Cause Checks & Tests
Won’t Power Up
• No operation
• No keypad response
• No LEDs or display
No power to washer.
Connections between main control and HMI.
Check power at outlet, check circuit breakers, fuses, or junction box
connections.
Connection problem between AC plug and main
control.
Check the AC power cord for continuity.
User Interface problem. Check connections and continuity between main control and HMI. See
TEST #4: HMI.
Main Control problem. See TEST #1: Main Control (ACU).
Won’t Start Cycle
No response when START is
pressed
Lid lock mechanism not functioning. 1. Lid not closed due to interference.
2. Lock not closed due to interference.
3. See TEST #8: Lid Lock.
Connections between main control and HMI. Check connections and continuity between main control and HMI.
User Interface problem. See TEST #4: HMI.
Main Control problem. See TEST #1: Main Control (ACU).
HMI Won’t Accept
Selections
Connections between main control and HMI. Check connections and continuity between main control and HMI.
User Interface problem. See TEST #4: HMI.
Main Control problem. See TEST #1: Main Control (ACU).
Won’t Fill
No water supplied to washer. 1. Check water connections to washer.
2. Verify that hot and cold water supply is on.
Plugged filter/screen. Check for plugged filter or screen in the water valve or hoses.
Drain hose installation. Check for proper drain hose installation.
Valve problem. See TEST #2: Valves.
Main Control problem. See TEST #1: Main Control (ACU).
Overfills
Pressure hose. See TEST #6: Water Level.
Valve problem. See TEST #2: Valves.
Washer requires calibration. Perform Service Calibration.
Pressure transducer on main control. See TEST #1: Main Control (ACU).
Won’t Dispense Fabric
Softener Or Oxi (Oxi not
on all models)
No water supplied to washer. 1. Check water connections to washer.
2. Verify that hot and cold water supply is on.
Obstruction in dispenser. Clean obstruction from dispenser.
Valve problem. See TEST #2: Valves.
Main Control problem. See TEST #1: Main Control (ACU).