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W11262428 ServiCe ManuaL Maytag Commercial Multi Load Washer MODELS: MYR20 MYR30 MYR25 MYR40 TeCHniCaL eDuCaTiOn...
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The goal of this Service Manual is to provide information that will enable the Commercial Laundry Service Professional to properly diagnose malfunctions and repair the Maytag Commercial Multi Load Washer. The objectives of this Service Manual are to: • Understand and follow proper safety messages.
TaBLe OF COnTenTS Page GeneraL ..........................1-1 Washer safety ........................1-1 Model number designations ....................1-2 Serial number designations ....................1-3 Data plate location ......................1-4 Warranty for vended product .................... 1-5 Warranty for on-premise product ..................1-6 inFOrMaTiOn & SpeCiFiCaTiOnS ..................2-1 Rigid model dimensions ....................
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TaBLe OF COnTenTS - COnTinueD Page Service switch ........................4-26 Door handle ........................4-27 Door strike ........................4-27 Door and Door hinges ....................... 4-28 Door glass ......................... 4-29 Toe panel .......................... 4-30 Drain valve ........................4-31 Front panel ........................4-32 Door lock ...........................
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inTeraCTive ServiCe ManuaL inSTruCTiOnS View on PC, MAC, iPad, iPhone and Android devices. Acrobat Reader is available for all devices to open .pdf documents. Click on any topic in the Table of Contents to go directly to that section. Click on any link that says (See page ?-?) to go directly to the page referenced. Click to view the video procedure on YouTube.
GeneraL WaSHer SaFeTY 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.
MODeL nuMBer DeSiGnaTiOnS MODeL nuMBer BranD Maytag MOunTinG TYpe YR Rigid Mount YS Soft Mount DrY WeiGHT CapaCiTY 20 20 lbs / 9.1 kg 25 25 lbs / 11.4 kg 30 30 lbs / 13.6 kg 40 40 lbs / 18.2 kg 55 55 lbs / 25 kg 65 65 lbs / 29.5 kg paYMenT MeTHOD / COnTrOL TYpe...
SeriaL nuMBer DeSiGnaTiOnS SeriaL nuMBer DiviSiOn reSpOnSiBiLiTY Fall River, MA Year OF prODuCTiOn 2017 2018 2019 WeeK OF prODuCTiOn 35 35th Week in the calendar year ManuFaCTurinG SeQuenCe nuMBer...
WarranTY FOr venDeD prODuCT MAYTAG COMMERCIAL LAUNDRY ® WARRANTY FOR VENDED PRODUCT MULTI-LOAD WASHERS MYR20, MYR25, MYR30, MYR40, MYR55, MYR65 IF YOU NEED SERVICE: For written correspondence: Contact your authorized Maytag Commercial Laundry ® distributor. Maytag Commercial Laundry Service Department ®...
WarranTY FOr On-preMiSe prODuCT MAYTAG COMMERCIAL LAUNDRY WARRANTY ® FOR ON-PREMISE PRODUCT MULTI-LOAD WASHERS MYR20, MYR25, MYR30, MYR40, MYR55, MYR65 IF YOU NEED SERVICE: For written correspondence: Contact your authorized Maytag Commercial Laundry ® distributor. Maytag Commercial Laundry ® Service Department To locate your authorized Maytag Commercial Laundry ®...
BOLT TOrQue vaLueS iMpOrTanT: Replace a damaged bolt with a bolt of the same strength value marked on its head. Standard torques are used, except in the locations specified below: Component MYR25 - MYR30 MYR40 - MYR55 - MYR65 Ft Lbs Ft Lbs Tub Cover Clamp...
BaSiC OperaTiOn pOWer DOOr LOCK Power supply voltage initiates at the power The door lock assembly is non-serviceable disconnect switch mounted to the upper back and only replaceable as a complete panel and flows through the line filter to the component.
WaTer inLeT vaLveS The Hot and Cold inlet Valves are mounted The water at the inlet (G) pushes against the to the top right side of the upper back panel. diaphragm (H). The solenoid plunger (B) and The Cold inlet is a four way valve and the Hot the spring (A) by themselves are not strong inlet is a three way valve.
uSB upDaTe prOCeDure CHeMiCaL inJeCTiOn There are two USB ports available on the The chemical injection inlets are located in washer. One is located inside the control the top right back corner of the back panel. panel and a second is on exterior of the upper These inlets are closed off from the factory.
WaSHer MainTenanCe WASHER MAINTENANCE Maintenance Schedule 4. Check mounting bolt tightness. Retighten if necessary. 5. Inspect all hoses and connections inside the washer for leaks and correct as necessary. After Each Load 6. Wipe off any stains with a soft cloth dampened with water or a mild detergent solution.
BeLT inSpeCTiOn anD aDJuSTMenT 5. To adjust the belt, loosen the motor spring bracket bolt and adjust motor tension spring as needed to correct tension. Re-test belt tension. 6. Reinstall back panel of washer. Turn on power at circuit breaker or fuse box. Electrical Shock Hazard Disconnect power before servicing.
COMpOnenT aCCeSS TOp paneL Open 4. Lift the top and support it with the prop rod below the top, behind the chemical dispenser. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.
COMpOnenTS aCCeSSiBLe unDer THe TOp paneL 3. Drive contactor, 4. Supply power transformer, 5. Supply power switch, Electrical Shock Hazard 6. Line fuse holders, Disconnect power before servicing. Replace all parts and panels before 7. USB Connection, operating. Failure to do so can result in death or 8.
CHeMiCaL DiSpenSer aSSeMBLY 4. A cap is provided, to cover the prewash dispenser, if prewash is not desired. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or Prewash electrical shock.
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11. Open the dispenser covers and peel the 15. The insert includes the covers, and the gasket up from around the edge of the siphons for the fabric softener and bleach dispenser to expose the screws. compartments. 16. Lift out the main wash cup, which can be taken apart for cleaning.
TOp paneL LOCK 5. Push lock out of hole in the top panel and remove it from the front of the top panel. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.
TOp paneL reMOvaL 3. The hinges are riveted to the top panel. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. 1. To remove the top panel, unlock the top panel.
eMi FiLTer 4. Use a 10mm wrench to remove the nut securing the ground wire. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. 10mm 1.
Drive COnTaCTOr 3. Use a Phillips head screwdriver to loosen the wire retainers on the contactor. TeCH Tip: JIS-#2, or Japanese Industry Standard, number 2 Phillips screwdriver is recommended. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating.
SuppLY pOWer TranSFOrMer 5. Remove the wires from the retainers. 6. Remove three Phillips head screws securing transformer to the component tray. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.
SuppLY pOWer SWiTCH 4. To remove the knob, use a number one Phillips head screwdriver to remove the screw in the center of the knob. 5. Pull the knob off. 6. Remove two number one Phillips screws Electrical Shock Hazard that were hidden by the knob, securing the Disconnect power before servicing.
FuSe repLaCe 3. Pull the fuse out of the holder. 4. These are 1 amp fuses. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. 1.
SOap SiGnaL BOarD 3. When looking at the board, the power connection is at the lower right side, ACU signal connection is at the upper right side, and connections for liquid chemical pumps is at the upper left side. Electrical Shock Hazard Disconnect power before servicing.
variaBLe FreQuenCY Drive 4. Press the locking tab and disconnect the communication cable. 5. Before disconnecting the other wires, take a picture, or label the wires, to assist in proper reassembly. Electrical Shock Hazard 6. To disconnect the wires, use a small flat Disconnect power before servicing.
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9. Loosen the screws above the motor wires 12. Loosen two Phillips head mounting at connectors U, V & W. Pull down to screws in the bottom corners of the VFD. remove the wires. Support the Variable Frequency Drive when loosening the bottom two screws.
WaTer inLeT vaLve repair 5. Remove the valve stem with a valve stem tool on a 1/2” nut driver. Place the tool over the valve stem and unscrew the valve stem. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating.
WaTer inLeT vaLve reMOvaL 4. Use a 7mm nut driver, Phillips, or Flat blade screwdriver to loosen hose clamps securing the water inlet hoses to the valve assembly. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating.
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8. Cold valve number one goes to the pre- 12. Hot valve number 5 goes to the pre-wash wash dispenser. dispenser. 9. Cold valve number two goes to the main 13. Hot valve number 6 goes to the main wash wash detergent dispenser.
COnTrOL paneL Open 4. Components accessible in the control panel include: A. The human machine interface, or HMI. B. The ribbon cable connected to the HMI is from the membrane touchpad on the front of the control panel. Electrical Shock Hazard C.
eMerGenCY STOp BuTTOn 4. There is a nut, a star washer and a flat washer. 5. Support button when removing the last nut. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.
COin DrOp 4. Remove four 7/32” hex nuts securing the coin drop to the control panel. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. 1.
HMi - COnneCTiOnS J8 - Coin 1 and coin 2 connector, J7 - Service and vault switch connector, J6 - Gen 2 card reader connector. Electrical Shock Hazard There is a 3 volt battery on the HMI, to Disconnect power before servicing. maintain real time clock, in case of power loss.
HuMan MaCHine inTerFaCe - reMOvaL TeCH Tip: Before touching electronic parts, touch bare metal on the washer to ground any static that has built up. 4. Lift the HMI off the control panel. The display is on the back side of the HMI. Electrical Shock Hazard Disconnect power before servicing.
appLianCe COnTrOL uniT - aCu - COnneCTiOnS Across the top edge starting from the left, J8 - communication cable to the human machine interface, Water level pressure hose, Electrical Shock Hazard Disconnect power before servicing. J1 - out of balance, Replace all parts and panels before operating.
appLianCe COnTrOL uniT - reMOvaL 5. Remove one T-20 screw securing the ACU board to the control panel bracket. One T-20 Screw Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.
WiFi MODuLe 4. Lift the Wifi module out of the control panel. nOTe: On the back of the Wifi module is a sticker with the SAID, Smart Appliance ID, and the MAC address for this Wifi module. Electrical Shock Hazard Disconnect power before servicing.
ServiCe SWiTCH 4. To remove the switch, remove two T-10 screws securing switch to mounting bracket. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or Two T-10 electrical shock.
DOOr HanDLe DOOr STriKe 1. To remove door handle, open washer door. 1. To remove door strike, open washer door. 2. Remove four T-30 screws securing the 2. Remove two #5 hex screws securing the door handle to the door. These are machine door strike to the inside of the door.
DOOr anD DOOr HinGeS 7. There is a shim on each hinge block 1. To remove the door hinges, open the positioned between hinge block and door. washer door. 2. Remove three T-30 screws from the top hinge block attached to the door. 8.
DOOr GLaSS 5. To reinstall the rubber seal, position the 1. To remove the door glass, peel up the edge front lip of the rubber seal over the edge of of the rubber seal on the front of the door. the door opening.
TOe paneL 3. The component accessible behind the toe panel is the drain valve. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. 1. To remove the toe panel, remove two Star security screws securing the toe panel to the front of the washer.
Drain vaLve 5. Squeeze the end of the Christmas tree clip and push it through the hole on the left side of the lower opening to provide more slack in the wires for the drain valve. Christmas 5/16” Hex Tree Clip Head Screw Electrical Shock Hazard Disconnect power before servicing.
FrOnT paneL 4. Grasp the bottom corners of the front panel. Pull forward and down slightly to remove the front panel from the washer. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.
DOOr LOCK 4. It may be necessary to loosen the two T-30 screws on the left side of the ornament panel, above and below the door lock. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before Two T-30 operating.
HeaTinG eLeMenTS 4. Remove the access panel. There are three slots for heating elements for electric water heat in this washer. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.
OrnaMenT paneL 4. Support the panel when removing the last screw. 5. Remove the ornament panel. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. 1.
BaCK paneL 3. Remove the two top screws last. 4. Support the back panel when removing the screws. 5. Pull the top edge of the back panel away from the washer. Electrical Shock Hazard Disconnect power before servicing. 6. Lift the panel up off the bottom two screws Replace all parts and panels before and remove it.
LOWer BaCK paneL 5. Lift the panel up from the bottom and move it back away from washer to remove panel. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.
Drive BeLT TeMperaTure SenSOr Electrical Shock Hazard Electrical Shock Hazard Disconnect power before servicing. Disconnect power before servicing. Replace all parts and panels before Replace all parts and panels before operating. operating. Failure to do so can result in death or Failure to do so can result in death or electrical shock.
SpeeD SenSOr 6. Mark the location of the adjustment nut for proper reinstallation. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before Adjustment operating. Failure to do so can result in death or electrical shock. 7. The speed sensor and wire harness are supplied as one piece.
Drive MOTOr 6. Use a 19mm socket to remove the hex nut on the motor mounting bolt. The head of this bolt has a bracket to hold it from turning, so no wrench is required on this bolt head. 7. Cut the wire ties securing the motor wire harness to side panel of the washer.
BearinG HOuSinG 7. Install a clamp at each wedge position to secure the front of the spin basket in place. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.
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12. The bearing house will begin to separate 18. Pull the bearing house straight back off the from the tub support as the jack bolts are shaft. tightened. When the bearing house is loose, pull it straight back off the shaft. 19.
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24. When the bearing house is centered and 30. Remove the bolt, thrust bearing and cup. within a half an inch of closing the gap, Inspect the end of the shaft to make sure install at least two of the bearing house the shaft is seated properly in the bearing.
BearinG anD BaSKeT repLaCeMenT - preFerreD MeTHOD 6. Remove the tub cover and clamp. Tub Cover Clamp Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.
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10. Using two people, pull the basket out from 14. Tighten the bolt, pulling the basket in and the front of the washer. pulling the shaft through the bearings. 15. Tighten until the shaft is seated completely into bearing housing. Remove the bolt, thrust bearing and cup.
COMpOnenT TeSTinG Before testing any of the components, perform n Check all connections before replacing components, looking for broken or loose the following checks: wires, failed terminals, or wires not pressed n Control failure can be the result of corrosion into connectors far enough.
Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. DOOr LOCK Door State State of Switch Common to Unlock Common to Lock Common to Detection Door Open Closed Open...
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ACU Door Lock Connections Note that Door Lock and ACU connection pin numbers invert with harness...
variaBLe FreQuenCY Drive WARNING WARNING DANGER Electrical Shock Hazard Electrical Shock Hazard Only authorized technicians should Disconnect power before servicing. perform diagnostic voltage Replace all parts and panels before measurements. operating. Failure to do so can result in death or After performing voltage electrical shock.
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Before servicing or replacing the VFD, If the fault is a Communication Error check (Variable Frequency Drive), remove power to supply voltage and Contactor. Confirm voltage the washer and wait a minimum of 10 minutes at VFD. If fault is Motor Error, check drive belt to allow potential stored voltage to dissipate.
Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. Drive COnTaCTOr The Drive Contactor supplies voltage to the VFD. For Single Phase models the Supply voltage L1 is connected to Terminal 1 (L1) and Supply voltage L2 to Terminal 5 (L3).
Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. COin DrOp aCCepTOr The coin drop acceptor is used only on the The coin sensor is mounted to a bar located PD model washers.
DiaGnOSiS anD TrOuBLeSHOOTinG ServiCe DiaGnOSTiCS Program Menu - Coin Washer To run a Factory Diagnostic test, select Diagnostic Cycle. Insure the door is closed Program Menu - OPL Washer and the washer will perform a series of component tests by locking the door and To enter Diagnostics toggle Service Key for powering fill valves, drain valve(s), drive and Vended controls or press Service Mode button...
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T-17 sub EXCEPTION DESCRIPTION Action error code 1 Micro Fault: Data Ram corruption of byte safety variable System Reset 2 Micro Fault: Data Ram corruption of short safety variable System Reset 3 Micro Fault: Data Ram corruption of long safety variable System Reset 4 Micro Fault: Data Ram corruption of float safety variable System Reset...
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T-17 sub EXCEPTION DESCRIPTION Action error code 32 The speed calculation form sensor and redundant circuit is out of tolerance Stop filling, Open Drain, Stop Motor for more than 60 readings and then wait for 2 min and open the Door 33 If the ADC value read from the “Internal Power Block”...
aLpHaBeTiCaL COMpOnenT inDex Appliance control unit - ACU - connections ..............4-23 Appliance control unit - removal ..................4-24 Back panel ........................4-36 Bearing and basket replacement - Preferred method ............4-44 Bearing housing ........................ 4-41 Chemical dispenser assembly ..................4-3 Coin drop ..........................
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WHY DOESN'T THE BLEACH RINSE DOWN