background image

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

PART NO. W10340707A

PAGE 12

DIAGNOSTIC TEST QUICK GUIDE

The following table summarizes keypad function among the diagnostic sub-modes.

Button Name

Generic

Function in Failure

Function in

Function in Diagnostic

on Interface

Button Function

User Input

Code Display Mode

Flashing Mode

Cycle Mode

QUICK CYCLE

Mode Select

Press and hold until

Erase diagnostic codes

Enter set-up mode.

Cancel cycle, enter

display flashes.

and begin flashing mode.

set-up mode.

DELICATES

Enter/Advance

Press for 1 second

Exit failure code display

Access Quick Overview

Move to next step.

AND KNITS

mode and enter set-up

Test.

mode without erasing code.

PERM. PRESS

Slew

Press for 1 second

Inactive

Credit a customer cycle.

Move to next step.

WHITES

None

N/A

Inactive

Access Manual Overview

Move to next step.

Test.

COLORS

None

N/A

Inactive

Access a Quick Drain

Move to next step.

& Spin.

BRIGHTS

None

N/A

Inactive

Access Washer

Move to next step.

Cleanout Cycle.

HELP MODE

This mode is used to verify the behavior of the washer, along with
the operation of a customer cycle. It allows verification of the current
status of many switches, actuators, valves, and relays. It also
reports the current values of the drum speed, unbalance value,
and power used by the MCU.

a) Accessing the Help Mode for PD Models:

Open the service door.

Press the DELICATES AND KNITS button until the display reads 2.XX.

Press the PERMANENT PRESS button.

Press the DELICATES AND KNITS button to move to the next
option (see Help Mode Submenu).

If the washer displays an error code, consult the “Code Display”
section (page 10).

b) Accessing the Help Mode in dAS Mode:

Open the service door or insert a manual diagnostic card.

The message dAS will appear in the display.

Press the PERMANENT PRESS button.

Press the DELICATES AND KNITS button to move to the next
option (see Help Mode Submenu).

If the washer displays an error code, consult the “Code Display”
section (page 10).

Exit Help Mode Submenu by pressing the PERMANENT PRESS button.

Keypad Function in Diagnostic Mode Table

Help

Code

Description

OF

Oversuds detected during cycle, and washer was not able to resolve
an unbalance condition detected during the final spin related to the
oversuds detection (via pressure sensor) earlier in the cycle

32

More than 6 unbalance retries during the final spin – spin (and cycle)
has been aborted

33

Oversuds detected during wash cycle, and washer was not able to
resolve the condition – cycle has been aborted. Washer unable to
sense that water has been fully drained within required time, sensing
as an oversuds condition

71

Generation 2 debit card cycle polling message out of sequence

74

Generation 2 debit card remaining balance message out of sequence

75

Generation 2 debit card new card balance message out of sequence

88

Invalid messaging state found in da communications comm_suprv ( ) routine

Help Codes

Содержание MHN30PD

Страница 1: ...his condition will be stored in escrow but cannot be used until normal operation is restored by opening and closing the door If a door switch fails it must be replaced before normal operation can be restored Cold Start initial first use Washer is programmed at the factory as follows 11 minute wash period 3 rinses extra rinse not enabled 1 75 wash price PD models 0 00 wash price PN models Warm Star...

Страница 2: ... PRICE Represents the number of coins coin 1 needed to start the washer may adjust from 0 39 See VALUE OF COIN 1 Advance from 0 39 by pressing the PERMANENT PRESS button Factory default of 7 x coin 1 PN MODELS ONLY Factory default of 0 coins With coin slide activation this represents the number of push in actuations of a coin slide to start the washer 6 01 setting would represent one coin slide ac...

Страница 3: ...s the value of coin 2 in the quantity of 5 increments of the larger coin value 20 x 5 100 By pressing the PERMANENT PRESS button there is the option of 1 199 for the quantity of 5 increments PN MODELS This represents the value of coin 2 in the quantity of 5 increments of the larger coin value Factory default 5 x 5 of the larger coin value Press the DELICATES AND KNITS button once to advance to nex...

Страница 4: ...t for 800 rpm Press the DELICATES AND KNITS button once to advance to next code PENNY INCREMENT OFFSET This option is not supported for non North American models and the value must be set to 00 Press the DELICATES AND KNITS button once to advance to next code PREWASH LENGTH This is the number of minutes of PREWASH Choose 0 to disable the prewash or select between 2 and 7 minutes by pressing the PE...

Страница 5: ... press and hold the QUICK CYCLE button for 1 second while in set up code 6xx anytime a diagnostic code is present or while dAS displays if operating with Maytag Data Acquisition set up On entry to diagnostic mode the entire display will flash a cycle in process is canceled money in escrow is cleared and diagnostic codes are cleared If a diagnostic code persists it must be corrected before the foll...

Страница 6: ...recommended height Poor connection between CCU DP2 and drain pump Procedure 1 Clear error code 2 Unplug washer or disconnect power 3 Make sure the drain hose is not sealed in the standpipe 4 Make sure the drain height is not more than 8 ft above the base of the washer 5 Check the drain hose and make sure it is not plugged or kinked 6 Check the drain pump for foreign objects 7 Check the electrical ...

Страница 7: ...bols page 13 or continuity test at CCU DCS3 connection If the door switch circuit fails to open or close replace the door latch FOR SERVICE TECHNICIAN ONLY DO NOT REMOVE OR DESTROY PART NO W10340707A PAGE 7 d 1 2 F 25 d 4 F 26 ACCU TRAC WASHER INDICATION DISPLAY EXPLANATION AND RECOMMENDED PROCEDURE OVERFLOW CONDITIONS The overflow contact on the pressure switch is closed for more than 60 seconds ...

Страница 8: ... Unplug the washer or disconnect power 3 Verify that the communication cable is connected in the upper connector of the UIC 4 Verify continuity in the cable between the CCU and the UIC If after these procedures the continuity test fails replace the communication cable If F70 is still present replace the UIC d 1 5 F 34 d 1 4 F 33 ACCU TRAC WASHER INDICATION DISPLAY EXPLANATION AND RECOMMENDED PROCE...

Страница 9: ...low 90vac for 8 seconds Possible Causes Voltage drop due to multiple washers on same circuit Worn outlet Procedure 1 Clear error code 2 Unplug the washer or disconnect power 3 Check the wire harness connection between the RFI filter and the transformer If the above procedures do not solve the problem replace the UIC d 3 F 73 F 74 ACCU TRAC WASHER INDICATION DISPLAY EXPLANATION AND RECOMMENDED PROC...

Страница 10: ...ode Display Mode This mode can be accessed only when the washer is in error state For PD Models Open the service door The current F code or d code will be displayed If the washer is showing an error code consult FAILURE ERROR DISPLAY CODES page 5 For PN Models Remove the AA1 connector from the UIC board or insert a manual diagnostic card Enter the Service Access Code see Service Access Code sectio...

Страница 11: ...ng at Motor 5 MCU wash speed Motor control MCU Hardware Version 30 sec Bright 6 UIC Drain pump is ON Drain pump EEPROM Version Pressure switch Colors 7 UIC Drum rotates Motor Software Version counter clockwise Motor control MCU and ramps up Drain pump on Permanent Press Performs unbalance procedure before and after spinning If not interrupted the drum will slow and stop after reaching 0 rpm the do...

Страница 12: ...ce door Press the DELICATES AND KNITS button until the display reads 2 XX Press the PERMANENT PRESS button Press the DELICATES AND KNITS button to move to the next option see Help Mode Submenu If the washer displays an error code consult the Code Display section page 10 b Accessing the Help Mode in dAS Mode Open the service door or insert a manual diagnostic card The message dAS will appear in the...

Страница 13: ...yed in the MANUAL BUTTON FUNCTION IN DIAGNOSTIC SUB MODE The values 255 and 254 are reserved numbers for specific cases 255 unbalance has not been calculated yet 254 unbalance could not be calculated FOR SERVICE TECHNICIAN ONLY DO NOT REMOVE OR DESTROY PART NO W10340707A PAGE 13 Help Mode Submenu This sub menu consists of 14 steps To change to the next step press the DELICATES AND KNITS button To ...

Страница 14: ...s NOTE Be sure to perform the Diagnostic Tests before replacing the control board Primary Black to black 220 ohms White to white 3 ohms Green to green 1 2 ohms The number 1 pin has been marked on the bottom part of the connector An infinity measurement occurs when the multimeter does not detect an ohm reading CCU Wire Harness Connector Table Unplug washer or disconnect power before taking ohm meas...

Страница 15: ...if L_moussage excessif 22 24 26 21 11 14 p 3 2 1 5 3 6 1 2 3 AA6 AA1 Service Contacteur du service Connecteur du lecteur de carte Contacteur du coffre Switch Coin Vault Switch 1 4 2 3 AA4 1 4 2 3 AA5 1 2 3 1 2 3 4 5 6 AVAIL 2 AVAIL 1 ENABLE 1 ENABLE 2 DEBIT POWER DEBIT GROUND Card Reader Connector 1 2 3 4 NC NC USER INTERFACE CONTROL Interface utilisateur EE1 Battery Optional Pile en option Moteur...

Страница 16: ...o operate replace it Procedure if door switch is disconnected In this error the keypad works normally in set up mode but will not start a user paid cycle 1 Verify door switch operation by performing test for F26 error code page 7 even if the F26 code is not displayed If the above procedures fail to solve the problem replace the UIC WASHER VIBRATES 1 Verify that the washer is level 2 Verify that th...

Отзывы: