Maytag 27" Troubleshooting Manual page 32

Slide 19 Door Lock information
Troubleshooting a door lock complaint
Will Not Lock
•
Door not all the way closed or not properly aligned. Possible laundry load is too large to close
door.
•
Place washer into Service Mode and check for diagnostic codes 4,18 & 22.
•
Perform Board Output Test. Check door lock system. Check the output voltage of Door
Lock Coil. If normal, change door Lock switch, If not normal, change Main Control Board.
(Refer to the Component Testing procedure.)
•
Check electrical connections at lock switch assembly and machine control board (CN10).
(Refer to the Component Testing procedure.).
Will Not Unlock
•
Push door closed to make sure nothing from inside is pressing against it, which may keep it
from unlocking.
•
Door locked from water level too high. Opening door will result in water draining from door
opening.
•
Check for water remaining in the tub. Check the temperature inside the drum is higher than
50°C/122°F. If water is present inside drum, refer to "Will not drain", If there is no problem
with temperature, check wiring of Main Control Board and Door Lock Switch.
•
Drain manually by removing drain hose clamp.
•
Display shows LO. Press power Off Key to turn off the washer and unplug and reconnect
washer. Press any key to turn on the washer. if LO is displayed, Main Control Board and
Door Lock Switch should be checked.
•
Place washer into Service Mode and check for diagnostic codes 4,18 & 22..
•
Check electrical connections at lock switch assembly and Machine Control Board (CN10).
(Refer to the component Testing procedure.)
•
Perform Board Output Test. Check door lock system for loose connections.
•
Perform Board Output Test. Check door lock system. Check the output voltage of Door
Lock Coil If 120V present change door Lock switch , If not present, change Main Control
Board. (Refer to the component Testing procedure.)
Voltage Checks
Door Switch Check
Check voltage at Pin #6 and #4 of CN3
With Door Open = DC5V
With Door Closed = DC0V
Door Lock Check
Check Voltage at Pin #1 of CN5 and Pin #7of CN10 With Door Locked = AC120V
Check Voltage at Pin #1 of CN5 and Pin #2of CN7 With Door Locked = AC120V
Door Unlock Check
Check Voltage at Pin #1 of CN5 and Pin #8of CN10 With Door Unlocked = AC120V
Drain Motor Check
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