Troubleshooting Guide - Whirlpool MVWC400XW Technical Education

FOR SERVICE TECHNICIANS ONLY

TROUBLESHOOTING GUIDE

Some tests will require accessing components.
For detailed troubleshooting procedures, refer to "Troubleshooting Tests" .
PROBLEM
WON'T POWER UP
• No operation
• No keypad response
• No LEDs or display
WON'T START CYCLE
No response when Start Button
is pressed.
UI WON'T ACCEPT SELECTIONS
CYCLE TIME LONGER
THAN EXPECTED
WON'T FILL
WON'T DISPENSE FABRIC SOFTENER
OR OXI
WON'T AGITATE
TROUBLESHOOTING GUIDE
NOTE: Always check for error codes first.
POSSIBLE CAUSE
No power to washer.
Connection problem between AC plug and
main control.
Connections between main control and UI.
Main control problem.
User Interface 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.
Oversuds.
Off balance.
Weak suspension.
No water supplied to washer.
Plugged filter/screen.
Drain hose installation.
Valve problem.
Main control problem.
No water supplied to washer.
Obstruction in dispenser.
Valve problem.
Main control problem.
Water covering impeller?
Is lid lock showing open during cycle?
NOTE: Always check for error codes first.
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-J9 and UI.
See TEST #1: Main Control.
See TEST #4: Console and Indicators,
page 16.
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-J9 and UI.
See TEST #4: Console and Indicators.
See TEST #1: Main Control.
Check connections and continuity between
main control-J9 and UI.
See TEST #4: Console and Indicators.
See TEST #1: Main Control.
1. Verify use of HE detergent.
2. Excessive detergent usage.
1. Load is off balance.
2. Balance ring water leak.
Basket should not bounce up and down
more than once when pushed.
1. Check water connections to washer.
2. Verify 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. .
See TEST #1: Main Control.
1. Check water connections to washer.
2. Verify hot and cold water supply is on.
Clean obstruction from dispenser.
6-2
See TEST #2: Valves.
See TEST #1: Main Control.
See TEST #6: Water Level.
See TEST #8: Lid Lock.
CHECKS & TESTS