Troubleshooting Guide - Whirlpool Cabrio WTW8500DC Service Manual

FOR SERVICE TECHNICIAN'S USE ONLY

Troubleshooting Guide

Some tests will require accessing components. See Figures 6 & 7, page 21, for component locations.
For detailed troubleshooting procedures, refer to "Troubleshooting Tests" beginning on page 14.
Problem
Won't Power Up
• No operation
• No keypad response
• No LEDs or display
Won't Start Cycle
No response when
START is pressed
UI Won't Accept
Selections
Won't Fill
Overfills
Won't Dispense
Fabric Softener
Or Oxi (Oxi not
on all models)
Incorrect Water
Temperature
Won't Agitate
DO NOT REMOVE OR
NOTE: Always check for error codes first (pgs. 8–10).
Possible Cause
No power to washer.
Connection problem between
AC plug and main control.
Connections between main
control and UI.
User Interface problem.
Main Control problem.
Lid lock mechanism not
functioning.
Connections between main
control and UI.
User Interface problem.
Main Control problem.
Connections between main
control and UI.
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.
Water covering the impeller?
Is lid lock showing open
during the cycle?
Harness connections.
Shifter problem.
Motor problem.
Main Control problem.
DESTROY
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 UI.
See TEST #4: Keys and Encoders, page 17.
See TEST #1: Main Control, page 14.
1. Lid not closed due to interference.
2. Lock not closed due to interference.
3. See TEST #8: Lid Lock, page 20.
Check connections and continuity between main control
and UI.
See TEST #4: Keys and Encoders, page 17.
See TEST #1: Main Control, page 14.
Check connections and continuity between main control
and UI.
See TEST #4: Keys and Encoders, page 17.
See TEST #1: Main Control, page 14.
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, page 15.
See TEST #1: Main Control, page 14.
See TEST #6: Water Level, page 19.
See TEST #2: Valves, page 15.
Perform Service Calibration, page 4.
See TEST #1: Main Control, page 14.
1. Check water connections to washer.
2. Verify that hot and cold water supply is on.
Clean obstruction from dispenser.
See TEST #2: Valves, page 15.
See TEST #1: Main Control, page 14.
Make sure inlet hoses are connected properly.
See TEST #5: Temperature Thermistor, page 18.
See TEST #2: Valves, page 15.
See TEST #1: Main Control, page 14.
See TEST #6: Water Level, page 19.
See TEST #8: Lid Lock, page 20.
Check harness connections between main control
and drive system.
See TEST #3a: Drive System – Shifter, page 15.
See TEST #3b: Drive System – Motor, page 16.
See TEST #1: Main Control, page 14.
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