Troubleshooting guide

ManualsBrandsMaytag ManualsDryerD-5

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

PART NO. W10165326A PAGE 1

IMPORTANT

Electrostatic Discharge (ESD)

Sensitive Electronics

ESD problems are present everywhere. ESD may damage

or weaken the electronic control assembly. The new control

assembly may appear to work well after repair is finished,

but failure may occur at a later date due to ESD stress.

■

Use an anti-static wrist strap. Connect wrist strap to green

ground connection point or unpainted metal in the appliance.

-OR-

Touch your finger repeatedly to a green ground connection point

or unpainted metal in the appliance.

■

Before removing the part from its package, touch the anti-

static bag to a green ground connection point or unpainted

metal in the appliance.

■

Avoid touching electronic parts or terminal contacts; handle

electronic control assembly by edges only.

■

When repackaging failed electronic control assembly in anti-

static bag, observe above instructions.

BASIC OPERATION OF COMMERCIAL WASHER

■

For additional information, see

www.MaytagCommercialLaundry.com

GENERAL USER INFORMATION

‘----’ Inoperative State

These lines on the display indicate the appliance is inoperative.

Enter set-up mode to view diagnostic code.

‘0 Minutes’ showing in display

This condition indicates the appliance cannot be operated. Coins

dropped or debit inputs during this 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)

Appliance is programmed at the factory as follows:

■

14 minute wash period

■

3 rinses (extra rinse not enabled)

■

$1.75 wash price (PD models)

■

$0.00 wash price (PR models)

Warm Start (after power failure)

A few seconds after power is restored, if a cycle was in progress

at the time of the power failure, ‘RESELECT CYCLE’ will flash

in the display, indicating the need for a key press to restart

the washer.

Door Lock

The door will be locked when the cycle starts. The door will remain

locked until the end of a cycle or approximately 2 minutes after a

power interruption.

Pricing

After the door is opened following the completion of a cycle,

the display indicates the cycle price (unless set for free operation).

As coins are dropped or debit inputs arrive, the display will change

to lead the user through the initiation of a cycle.

Free Cycles

This is established by setting the cycle price to zero. When this

happens, ‘SELECT CYCLE’ will appear rather than a cycle price.

Debit Card Ready

This appliance is debit card ‘cable’ ready. It will accept a variety

of debit card systems, but does NOT come with a debit card reader.

Refer to the debit card reader manufacturer for proper washer

set-up. In models converted to a Generation 1 debit card system,

debit pulses represent the equivalent of one coin (coin 1).

Display

After the washer has been installed and plugged in, the display will

show ‘0 MINUTES’. Once the washer has been plugged in and the

washer door opened and closed, the display will show the price. In

washers set for free cycles, the display will flash ‘SELECT CYCLE’.

Summary of content (16 pages)

PAGE 1
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY Door Lock The door will be locked when the cycle starts. The door will remain locked until the end of a cycle or approximately 2 minutes after a power interruption. BASIC OPERATION OF COMMERCIAL WASHER ■ For additional information, see www.MaytagCommercialLaundry.com Pricing After the door is opened following the completion of a cycle, the display indicates the cycle price (unless set for free operation).
PAGE 2
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY CONTROL SET-UP PROCEDURES CODE IMPORTANT: Read all instructions before operating. ■ PD/PS Models: Insert access door key, turn, and lift to remove access door. ■ PR Models: Once the debit card reader is installed (according to the reader manufacturer’s instructions), the set-up mode can be entered by inserting a manual set-up card (supplied by the reader manufacturer) into the card slot.
PAGE 3
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY CODE EXPLANATION CODE OPTIONS TO USE IF SPECIAL PRICING IS SELECTED (cont.): C.20 C.20 5. 0 0 5. 0 0 TIME-OF-DAY CLOCK, MINUTES This is the TIME-OF-DAY CLOCK, minute setting; select 0-59 minutes by pressing the PERMANENT PRESS key pad. Press the WOOLENS key pad once to advance to next code. TIME-OF-DAY CLOCK, HOURS 6. 0 0 NOTE: Uses military time or 24 hr. clock. This is the TIME-OF-DAY CLOCK, hour setting; select 0-23 hours 6.
PAGE 4
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY CODE J. C 8 J. C 8 J. C 8 J. C 8 If cycle counter (90C) is selected, the following is true: EXPLANATION COIN/DEBIT OPTION Both coin & debit selected. Coins selected, debit disabled. Debit Card selected, coins disabled. Press the DELICATES & KNITS key pad 3 consecutive times for this selection. Enhanced Debit is self-selected when a Generation 2 card reader J. E 8 is installed in the washer. The Ed option cannot be manually selected or deselected.
PAGE 5
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY DIAGNOSTIC GUIDE FAILURE/ERROR DISPLAY CODES Before servicing, check the following: ■ Make sure there is power at the wall outlet. ■ Are both hot and cold water faucets open and water supply hoses unobstructed? ■ Check all connections before replacing components. Look for broken or loose wires, failed terminals, or wires not pressed into connections far enough. ■ A potential cause of a control not functioning is corrosion on connections.
PAGE 6
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY ACCU TRAC® WASHER DISPLAY DISPLAY d 7 d 8 F 20 F 21 EXPLANATION AND RECOMMENDED PROCEDURE NO WATER DETECTED ENTERING MACHINE OR PRESSURE SWITCH TRIP NOT DETECTED The pressure switch is not tripped after 6 minutes. Possible Causes/Procedure ■ If there is no water in the unit: – Make sure that both valves at the water source(s) are turned on all the way. – Check for plugged or kinked inlet hoses or plugged screens in the inlet valves.
PAGE 7
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY ACCU TRAC® WASHER DISPLAY DISPLAY d 21 d 20 d 19 F 27 F 28 F 29 EXPLANATION AND RECOMMENDED PROCEDURE OVERFLOW CONDITION If the overflow contact on the pressure switch is closed for more than 60 seconds, an Overflow Condition occurs. In an overflow condition, the door remains locked and the drain pump runs constantly, even if STOP is pressed twice and the display is cleared.
PAGE 8
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY ACCU TRAC® WASHER DISPLAY DISPLAY d 22 F 70 d 23 F 71 d 3 F 73 d 3 F 74 ACCU TRAC® WASHER DISPLAY DISPLAY EXPLANATION AND RECOMMENDED PROCEDURE CENTRAL CONTROL UNIT HEARTBEAT FAILURE If a Central Control Unit Heartbeat Failure is displayed, no communication is detected from the Central Control Unit to the User Interface. Possible Causes/Procedure 1. Check for continuity of the User Interface harness. 2.
PAGE 9
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY ACCU TRAC® WASHER DISPLAY DISPLAY d 16 d 16 EXPLANATION AND RECOMMENDED PROCEDURE GENERATION 2 DEBIT CARD READER ERROR No communication from installed debit card reader in Generation 2 debit mode. Possible Causes/Procedure ■ A wrong payment mode selection may cause this problem. – Verify that you are using a Gen2 card reader and not a Gen1. ■ If you are using a Gen2 card reader: 1. Unplug the washer or disconnect power. 2.
PAGE 10
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY HISTORY OVERVIEW TEST PROGRAM MANUAL OVERVIEW TEST PROGRAM This cycle consists of 8 steps. In each step, the washer will perform a Control Action as described in the table below. Once the action is completed, the machine will jump to the next step. ■ Each step can be differentiated from the others by looking at the display indication. Each step has a different message displayed.
PAGE 11
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY DIAGNOSTIC TEST QUICK GUIDE The following table summarizes key functions among the diagnostic sub-modes. Key Functions in Diagnostic Mode Table Key Name on Interface DELICATES & KNITS Generic Key Function Mode Select Function in Code Display Sub-Mode User Input Function in Flashing Sub-Mode Function in Cycle Running Sub-Mode Press for 1 second Erase codes and enter set-up mode.
PAGE 12
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY Water Temperature Sensor HELP MODE SYMBOLS AND ELEMENTS 1. Unplug washer or disconnect power. 2. Disconnect the wire harness from the water temperature sensor and measure the resistance of the sensor. Use the following table. An abnormal condition is an open circuit. Along with the 15 steps of the help mode, symbols and elements are mapped, at all times, to reflect the state of various inputs and outputs.
PAGE 13
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY 5. Check carefully for any hot circuits on the board, and wait until they cool down. 6. Disconnect the user interface power harness, and the coin vault and service switch harness. 7. For coin drop models, disconnect the coin 1 (and coin 2, if provided) wire harness. 8. For card reader models, disconnect the card reader harness. To Remove Motor Control Unit (MCU): 1. Unplug washer or disconnect power. 2.
PAGE 14
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY WIRING DIAGRAM DRIVE MOTOR Moteur d’entraînement N WAX MOTOR Moteur de l’actionneur L DRAIN PUMP Pompe de vidange DOOR LOCK/SWITCH Contacteur/verrou de porte DLS Lock Unlock Verrouillage Déverrouillage IF DISPENSER Motor Switch Distributeur contacteur moteur DS 2 DL3 1 DS2 1 2 2 DLS2 1 3 HE2 2 1 HR2 HR1 2 DR1 K1 VH VC MOTOR CONTROL UNIT (MCU) Module de commande du moteur L2 IF2 1 INLET VALVES Électrovannes (entrées) L1 N1 MS2
PAGE 15
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY TROUBLESHOOTING GUIDE PROBLEM WON’T POWER UP TOUCH-PADS DO NOT RESPOND WHEN PRESSED WON’T START CYCLE WON’T DISPENSE WON’T FILL PART NO. W10165326A POSSIBLE CAUSE/TEST NOTE: Possible Cause/Tests must be performed in the sequence shown for each problem. 1. Check that the washer is plugged into a working outlet and look for blown fuses. 2. Unplug washer or disconnect power. 3. Check continuity of line cord and line filter, and replace if necessary.
PAGE 16
FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY TROUBLESHOOTING GUIDE PROBLEM POSSIBLE CAUSE/TEST NOTE: Possible Cause/Tests must be performed in the sequence shown for each problem. 1. Verify the washer is level. 2. Check pump drain system – this could indicate a failure to drain. 3. Unplug washer or disconnect power. 4. Check operating pressure switch. 5. Check pressure switch hose. 6. Plug in washer or reconnect power. 7.