Troubleshooting Guide - Whirlpool WTW7120HC Manual De Instrucciones

Troubleshooting Guide

NOTE: Always check for Faults and Error Codes
See Figs. 11 & 12 for Component Locations.
Problem
Won't Power Up
• No operation
• No keypad response
• No LEDs or display
Won't Start Cycle
No response when START is
pressed
HMI Won't Accept
Selections
Won't Fill
Overfills
Won't Dispense Fabric
Softener Or Oxi (Oxi not
on all models)
Incorrect Water
Temperature
DO NOT REMOVE OR DESTROY
FOR SERVICE TECHNICIAN'S USE ONLY
first. Some tests will require accessing components.
For detailed troubleshooting procedures, refer to
Possible Cause
No power to washer.
Connections between main control and HMI.
Connection problem between AC plug and main
control.
User Interface problem.
Main Control problem.
Lid lock mechanism not functioning.
Connections between main control and HMI.
User Interface problem.
Main Control problem.
Connections between main control and HMI.
User Interface problem.
Main Control problem.
No water supplied to washer.
Plugged filter/screen.
Drain hose installation.
Valve problem.
Main Control problem.
Pressure hose.
Valve problem.
Washer requires calibration.
Pressure transducer on main control.
No water supplied to washer.
Obstruction in dispenser.
Valve problem.
Main Control problem.
Water hose installation.
Temperature thermistor.
Valve problem.
Main Control problem.
Troubleshooting
Checks & Tests
Check power at outlet, check circuit breakers, fuses, or junction box
connections.
Check the AC power cord for continuity.
Check connections and continuity between main control and HMI. See
TEST #4: HMI.
See TEST #1: Main Control (ACU).
1. Lid not closed due to interference.
2. Lock not closed due to interference.
3. See TEST #8: Lid Lock.
Check connections and continuity between main control and HMI.
See TEST #4: HMI.
See TEST #1: Main Control (ACU).
Check connections and continuity between main control and HMI.
See TEST #4: HMI.
See TEST #1: Main Control (ACU).
1. Check water connections to washer.
2. Verify that hot and cold water supply is on.
Check for plugged filter or screen in the water valve or hoses.
Check for proper drain hose installation.
See TEST #2: Valves.
See TEST #1: Main Control (ACU).
See TEST #6: Water Level.
See TEST #2: Valves.
Perform DLMS Calibration.
See TEST #1: Main Control (ACU).
1. Check water connections to washer.
2. Verify that hot and cold water supply is on.
Clean obstruction from dispenser.
See TEST #2: Valves.
See TEST #1: Main Control (ACU).
Make sure inlet hoses are connected properly.
See TEST #5: Temperature Thermistor.
See TEST #2: Valves.
See TEST #1: Main Control (ACU).
Tests.
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