Maytag MFS Series Programming Manual page 51

9. Check the continuity of the wiring
10. Check the output relay that powers inlet
valves and the drain valve
DIAGNOSTIC CODE
Diagnostic Code D8 occurs when the electronic timer detects that the water is not drained after 3 minutes in
a Drain or Spin Sequence. The failure message is displayed at the end of the cycle.
DIAGNOSE (ERR2):
1. Check the drain tube of the washing machine
2. Check the drain valve
3. Check the wiring:
verify if the drain valve is Switched OFF
The drain valve is normal open.
DIAGNOSTIC CODE
For safety reasons: the door locked system is scanned all the time.
If the machine detect that the „DOOR SOLENOID SWITCH" is not closed then the machine will immediately
stop all its functions. The door will stay locked.
DIAGNOSE (ERR7):
1. Check the functioning of the „DOOR
SOLENOID SWITCH".
The „DOOR SOLENOID SWITCH" is a NO
Open contact.
2. Check the door lock coil
3. Check the mechanical functionality of the door
lock
4. Check the continuity of the wiring
5. Check the door switch input at the wash
computer. (See Inputs at Toolbox Menu)
DIAGNOSTIC CODE
This fault will only occur when there is no communication between the electronic timer and the inverter.
The electronic timer is sending requests to the inverter, and the inverter is sending answers to the timer.
If the electronic timer is not receiving the answers within 5 seconds then Diagnostic Code D11 will be
displayed.
The baud rate for the E500 series Mitsubishi inverters is 19200. ( = RS485 communication)
(Graphic Control Wash Computer and Inverter have to communicate with the same baud rate.)
DIAGNOSE(ERR27):
1.For a new inverter or timer :
Check if the right machine type and Washing
machine power supply have been selected.
2. Check if the door is closed and locked
3. Check if the inverter is energized
4. Check if the fuses are still functional
5. Check if the safety contactor is activated
516532 B PUBLICATION DATE 1 JUN 2007.DOC
If the wiring is not continuous: repair the wiring
If the relay receives a command signal but is not
closed, replace the wash computer
D8: DRAIN FAILURE
D10 : DOOR SOLENOID SWITCH FAILURE
D11 : COMMUNICATION FAULT INVERTER
When the Inverter parameters are loaded at the
Configuration menu, make sure that you have selected
the right machine type and washing machine power
supply.
If the door is not closed then the inverter can not be
powered. Close the door.
If the door lock is broken, repair the door lock system
Measure the voltage at the input of the inverter
If the fuses are blown up : replace the fuses
If the safety contactor is broken : replace the contactor
PROGRAMMING MANUAL
If the drain tube is blocked: repair the drain tube
If the drain valve is defective: replace the drain
valve
If the wiring is damaged: repair the wiring
If the „DOOR SOLENOID SWITCH" is broken or
functions not 100%: replace the door lock system
If the door lock coil doesn't function: replace the
door lock coil
If the door lock is not functioning mechanically:
replace the door lock system
If the wiring is not continuous: repair the wiring
If the wash computer input is not functional replace
the wash computer board.
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