Maytag MFS 25-35 manual Troubleshooting Aids, Error Handling, Problem Check List

6.TROUBLESHOOTING AIDS

6.1.ERROR HANDLING

The timer allows the full control of the washing machine. When an error occurs then automatically the machine will go over to a safe state. With the diagnostic program you can determine the problem (See „Programming manual"). This program will test all the functions of the washing machine.

If a failure occurs then the computer will display a diagnostic message. The message is a number that correspond with a typical problem.

If a failure occurs and the timer gives no message you can consult chapter 6.2.

6.2. PROBLEM CHECK LIST

Problem	Cause	Solving the problem
When the power is switched on :	• no external power	• verify the external tension of the
the display is not lighting up		machine
	• the emergency button is activated	• deactivate the emergency button
Remark :	• the power connector is not	• connect the power connector
The display must always light up	connected on the board
when the power connector is	• the power connector is inverse	• check the wiring and connect the
connected to the power board	connected	connector as it must be
(EPROM with software must be	• the fuse on the PWR board has	• if the transformer is deformed replace
implemented)
	jumped	the PWR board
		Check the wiring and the tension at the
		power Connector
		If the transformer is still OK change the
		Fuse
	• the input connector is disconnected	• if the display is lighting up: verify that
		the input signals or the + 16 V signal are
		not touching the cabinet
	• the EPROM that contains the	• put the right EPROM with software into
	software is not implemented	the socket on the board.
The machine is not starting up when	• the key switch stands in Program	• set the Key switch to Run mode
the start button is pressed.	mode
	• the correct amount of coins is not	• the start button must be pressed when
	inserted
		00 is flashing on the lower display
	• the door is not closed properly
		• close the door
Coins are inserted but the displayed	• the micro contact mounted on the	• verify the well functioning of the micro
program price is not counting down	coin drop is not functional	contact of the coindrop :
		positive pulses should be generated
	• the optocoupler mounted on the	• verify the well functioning of the
	coindrop is not functional	optocoupler positive pulses should be
		generated
	• check the wiring to the coindrop	• if the wiring is broken: repair the wiring
		• insert the correct coin value in the u-
	• verify if you have entered a coin
		submenu
	value in the u-submenu for the
	corresponding coindrop
Coindrop is accepting coins but does	• the start button is not pushed after	• push the start button
not start the washer	the amount is flashing on ‘00’
	• the right amount is not reached	•Put the right amount in the coindrop
	• the door is not closed properly
		• close the door
The machine is not responding on	• the key switch is not functional (no	• check if the input connector A is well
pressing the keyboard buttons	dot is displayed when switching in	connected and check the wiring between
	Program mode)	the input connector and the keyswitch
	• the START button is not functional	• set the Key switch to Run mode
	(the key switch stands in Program
	mode)	• set the Key switch to Program mode
	• the SET button is not functional (the
	key switch stands in Run mode)	• check if the connector K of the keyboard
	• no button is functional and the key
		is well connected
	switch is in the right position
The dot to indicate that the software is	• the key switch is not functional	• check if the input connector A is well
in program mode can not be enabled		connected and check the wiring between
or disabled	• the infrared key is not functional	the input connector and the keyswitch
		• set the menu-item, Ir = On

24 INSTALLATION AND MAINTENANCE MANUAL PUBLICATION DATE Sep 05 100646