Maytag MDE/MDG21PDA Service Manual page 20

Troubleshooting Procedures
To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing, unless testing
requires power.
Single Dryer Troubleshooting Guide
Display
Flashes In
User Mode
Display
shows "Add"
Or "Available"
When Not In A
Cycle And No
Coins Have
Been Added
Coins
Dropped Into
Machine And
Credited Are
Eventually
Lost
20
!
Make sure that the
Check for the proper
vault box is in all the
way. If it is out, the
display will flash.
Unplug dryer. Disconnect lower
connector from control board.
check for continuity between
terminals 7 and 8 of connector
while cycling vault switch.
Is price suppression
Yes
mode selected?
No
Is the clear escrow
Yes
mode selected?
No
16022904 Rev. 0
WARNING
Check wiring and
termination between
adjustment of vault
switch.
Does vault switch
open and close
properly?
Yes
Reconnect AA1. If
problem persists,
replace control
board
Normal operation. Price
suppression is typically used when
a different control system that has
its own display is responsible for
starting the machine.
Go to the section "Abnormal
Display Or Function"
Normal operation. Money in escrow
is cleared out after 30 minutes
pass with no cycle in process or
coin related activity.
Go to the section "Abnormal
Display Or Function"
vault switch and
control board.
No
Replace vault
switch.
If price suppression
Deselect it in service
If clear escrow mode
deselect it in service
©2004 Maytag Appliances Company
is not desired.
mode.
is not desired,
mode.