Page 2
FORWARD This Maytag Service Manual, "Maytag Dishwashers, 4-Blade Stainless Steel Chopper" (Part No. W11035362), provides the In-Home Service Professional with service information for the “Maytag Chopper Dishwasher." The Wiring Diagram used in this Service Manual is typical and should be used for training purposes only.
TABLE OF CONTENTS Maytag Chopper Dishwashers SECTION 1 — GENERAL INFORMATION DISHWASHER SAFETY .........................1-2 GENERAL THEORY OF OPERATION .....................1-3 NEW COMPONENTS ...........................1-4 MODEL & SERIAL NUMBER LABEL .....................1-6 TECH SHEET LOCATION ........................1-6 MODEL & SERIAL NUMBER NOMENCLATURE ...................1-7 DISHWASHER SPECIFICATIONS ......................1-8 PARTS &...
Page 4
TABLE OF CONTENTS (CONTINUED) Maytag Chopper Dishwashers SECTION 4 — COMPONENT ACCESS ADJUSTABLE DOOR SPRINGS ......................4-2 INSULATION BLANKET ........................4-3 DOOR LATCH STRIKE ...........................4-3 ACCESSING DOOR COMPONENTS ......................4-4 USER INTERFACE ..........................4-4 REMOVING DOOR LATCH ASSEMBLY ....................4-5 REMOVING ELECTRONIC CONTROL BOARD ..................4-6 REMOVING DISPENSER ASSEMBLY ....................4-7...
GENERAL INFORMATION Section 1: General Information This section provides general safety, parts, and information for the “Maytag Chopper Dishwasher.” n Dishwasher Safety n General Theory of Operation n New Components n Model & Serial Number Label n Tech Sheet Location n Model &...
You can be killed or seriously injured if you don't follow instructions. All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can happen if the instructions are not followed. Maytag Chopper Dishwashers...
(C). glassware. 4. During the drain phase, a secondary pump flushes out used wash water. n Maytag® dishwashers feature the most powerful motor on the market, so you can be sure what you put in comes out clean. Figure 1 - Chopper Wash System...
Model & Serial Number Label Location Figure 7 - Model/Serial Number Label located inside, on left side wall, toward front. Tech Sheet Location Tech Sheet Location Figure 8 - Tech Sheet located behind toe panel inside insulation folds. Maytag Chopper Dishwashers...
GENERAL INFORMATION Model & Serial Number Nomenclature MODEL NUMBER INTERNATIONAL SALES OR MARKETING CHANNEL BRAND CLASSIFICATION M = Maytag PRODUCT IDENTIFIER D = Dishwasher PRODUCT TYPE B = Built-in FEATURE SET Ranges from 49-89. The higher the number, the more features...
Rack height adjusters (on some models) Cup shelf (varies by model) Upper spray arm TOP RACK Fold down tines (on some models) Silverware basket (varies by model) High side shelf (on some models) BOTTOM RACK Figure 9 Maytag Chopper Dishwashers...
DIAGNOSTICS & TROUBLESHOOTING Section 2: Diagnostics & Troubleshooting This section provides diagnostic, fault codes, and troubleshooting information for the “Maytag Chopper Dishwashers.” n Diagnostics & Troubleshooting Safety n Service Diagnostic Cycle n Service Diagnostic Cycle Notes n Customer Cycle Operation...
Page 16
Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible, nor assume any liability for injury or damage of any kind arising from the use of this data sheet. Maytag Chopper Dishwashers...
Page 17
DIAGNOSTICS & TROUBLESHOOTING For Service Technician Use Only Maytag Chopper Dishwashers...
5, and turn on the clean LED in interval 4 if air detected. n Check OWI sense for the presence of bulk soil during pause interval 9; execute APF, and turn on clean LED in interval 8 if bulk soil detected. Maytag Chopper Dishwashers...
OR ON DISPLAY MODELS Read “F#” on Display 0.5 seconds Read “E#” on Display 1 second NOTE: Once error codes are extracted, refer to the “Service Error Codes” table to diagnose and correctly resolve the root cause condition. Maytag Chopper Dishwashers...
- CHECK ERROR CODE HISTORY FOR FAN ERROR 10-3 AS POTENTIAL CAUSE OF CONDENSATION ON USER INTERFACE. - VERIFY PRESENCE OF VENT CURRENT IF MODEL HAS A VENT WAX MOTOR. REFER TO “LEAKS OR DRIPS ON CABINET OR FLOOR” IN THE “TROUBLESHOOTING GUIDE” SECTION. Maytag Chopper Dishwashers...
Page 21
1. CHECK FOR 13 VDC FROM P9-5 TO P9-6 BY COMPLETING THE FOLLOWING STEPS: A. CONNECT VOLTAGE MEASUREMENT EQUIPMENT. B. PLUG IN DISHWASHER OR RECONNECT POWER AND VERIFY 13 VDC. C. IF NO VOLTAGE IS PRESENT, UNPLUG DISHWASHER OR DISCONNECT POWER AND REPLACE CONTROL. Maytag Chopper Dishwashers...
Page 22
1. DISCONNECT DRAIN HOSE AT PLUMBING CONNECTION. 2. ELEVATE HOSE ABOVE DISHWASHER AND FILL WITH WATER. IF WATER FLOWS INTO DISHWASHER, REPLACE ENTIRE DRAIN LOOP (INSTALL AS HIGH AS POSSIBLE AND ATTACH TO UNDERSIDE OF COUNTERTOP IF POSSIBLE). Maytag Chopper Dishwashers...
Page 23
UNPLUG DISHWASHER OR DISCONNECT POWER AND REPLACE CONTROL. 2-HEATER HEATER DRIVE CIRCUIT ON THE CONTROL. 1. UNPLUG DISHWASHER OR DISCONNECT POWER AND REPLACE CONTROL. STUCK ON 2. INSPECT HEATER AND CONNECTIONS FOR OVERHEATING/ SHORTING. IF EVIDENCE OF OVERHEATING OR SHORTS EXISTS, REPLACE. Maytag Chopper Dishwashers...
Page 24
UNPLUG DISHWASHER OR DISCONNECT POWER AND CHECK OPEN FAN MOTOR. RESISTANCES OF FAN MOTOR AND ALL CONNECTIONS IN THE FAN CIRCUIT. FIX/REPLACE OPEN CONNECTIONS OR FAN. ERROR FAN DRIVE CIRCUIT ON THE CONTROL. UNPLUG DISHWASHER OR DISCONNECT POWER AND REPLACE CONTROL. 2-10 Maytag Chopper Dishwashers...
INTERRUPTED DURING A CYCLE, THE USER MUST PRESS THE START/RESUME KEY TO RESUME OPERATION. START/RESUME KEY NOT RESPONDING. SEE “ONE OR MORE KEYS WON’T RESPOND”. CONTROL DETECTED DOOR SWITCH REFER TO SERVICE ERROR CODES TABLE. PROBLEM. Maytag Chopper Dishwashers 2-11...
Page 26
REFER TO SERVICE ERROR CODES TABLE. LONG CYCLES BUT WILL TYPICALLY CAUSE A “WATER HEATING FAULT”. HEATER TAKES A LONG TIME TO HEAT WATER CHECK FOR AT LEAST 100 VAC AT POWER SOURCE. WITH LOW VOLTAGE. 2-12 Maytag Chopper Dishwashers...
Page 27
DISPENSER ELECTRICAL PROBLEM REFER TO SERVICE ERROR CODES TABLE. 10-1 CONTROL CANCELLED CYCLE BEFORE REFER TO SERVICE ERROR CODES TABLE. 4-3, 6-1 DISPENSING DUE TO ERROR DETECTED WITH 6-2, 6-3 WASH MOTOR OR LOW WATER. 6-4, 8-3 Maytag Chopper Dishwashers 2-13...
Page 28
1. DISCONNECT DRAIN HOSE AT PLUMBING CONNECTION. 2. ELEVATE HOSE ABOVE DISHWASHER AND FILL WITH WATER. IF WATER FLOWS INTO DISHWASHER, REPLACE ENTIRE DRAIN LOOP. INSTALL AS HIGH AS POSSIBLE AND ATTACH TO UNDERSIDE OF COUNTERTOP IF POSSIBLE. 2-14 Maytag Chopper Dishwashers...
Page 29
REFER TO “SERVICE ERROR CODES TABLE.” WATER HEATING PROBLEM, HEATER STUCK REFER TO “SERVICE ERROR CODES TABLE.” WATER HEATER DISPLACED FROM INSPECT HEATER. ADJUST BACK INTO POSITION IF NEEDED. MOUNTING CLIP AND / OR PULLED OFF CENTER. Maytag Chopper Dishwashers 2-15...
Page 30
AIR PRESSURE SURGE WHEN DOOR IS INSTRUCT CUSTOMER TO LEAVE DOOR OPEN A FEW MINUTES OPENED AND IMMEDIATELY CLOSED WHILE BEFORE RE-CLOSING IF OPENED WHILE DISHWASHER IS HOT. DISHWASHER IS HOT CAN FORCE DROPLETS OUT THE VENT DUCT. 2-16 Maytag Chopper Dishwashers...
TESTING Section 3: Testing This section provides a wiring diagram, control board specifications, testing procedures and strip circuits the “Maytag Chopper Dishwashers.” n Testing Safety n Wiring Diagram n Control Board Information n General Theory of Operation n Power Check...
Page 32
Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible, nor assume any liability for injury or damage of any kind arising from the use of this data sheet. Maytag Chopper Dishwashers...
• The testing procedures in this section may require the use of needle probes to measure voltage. Failure to use needle probes will damage the connectors. Maytag Chopper Dishwashers...
Dishwasher Strip Circuits What To Do If Fuse Open: NEUTRAL DC GND Maytag Chopper Dishwashers ual circuits are for use in diagnoses. Do not continue with Unplug dishwasher or disconnect power. Inspect and check resistance of all loads on fuse.
¾ If not, replace the control. ¾ If it has, turn off dishwasher and reconnect one connector at a time until the component loading down that supply has been identified. 11. Unplug dishwasher or disconnect power. 12. Reassemble all parts and panels. Maytag Chopper Dishwashers...
Heater (N) Relay Pilot (L1) Relay Motor (N) Relay Heater (L1) Relay Sensing Input N.O. P9-6 P9-5 Door Micro Pin Micro Pin Micro Pin Micro Pin Switch P10-4 Electronic Control Electronic Control Maytag Chopper Dishwashers Motor Power Sense Resistor Winding or Jumper...
Overfill Electronic Control 120V, 60 Hz, 6W Switch Circuit) Float Switch Electronic Control No test pad on P6-7. Electronic Control No test pad on P6-4. Recommend using test pad on P6-6. Recommend using test pad on P10-1. Maytag Chopper Dishwashers...
260Ω - 300Ω Switch Circuit) 120V, 60 Hz, 17W Electronic Control Test pad on P9-3 might crowd P9-1. Recommend using test pad on P10-1. Maytag Chopper Dishwashers Diverter Sensor se top hole of jumper W2 as test point for F9. N.O.
120V, 60 Hz, 250 W Heat Dry and Water Sensing with O.W.I. Sensor (Water/Air/Soil/Temperature) g and control monitors temperature during water heating periods. See “Wash/Rinse” and “Water Heating/Heat Dry and Water S 3-12 Maytag Chopper Dishwashers Water/Air/Soil/Temperature)” circuits. Electronic Control YL Pin 1...
120V, 60 Hz, No test pad on P6-3. Recommend using test pad on P10-1. (Detergent and Rinse Aid) Electronic Control Maytag Chopper Dishwashers 3-13 Dispenser Wax Motor Use top hole of jumper 1.4KΩ - . KΩ 120V, 60 Hz, 10W W2 as test point for F9.
Vent Wax Motor Fuse (Also see Door 600 Ω - 1,800 Ω Switch Circuit) 120V, 60 Hz, 6W Electronic Control Electronic Control DC Fan (not on all models) 3-14 Maytag Chopper Dishwashers (Red stripe (Red stripe on plug) on plug) P10-4...
No test pad on P10-4. Recommend using test pad on P11-5. AC Fan (not on all models) Electronic Control AC Fan Motor Electronic Control Maytag Chopper Dishwashers 3-15 115V, 60Hz, 10.2W Typical Use top of jumper W2 Ω - Ω...
Press any 3 keys in the sequence 1-2-3-1-2-3-1-2-3 with no more than 1 second between key presses. 3-16 Maytag Chopper Dishwashers me models have replaced the “CLEAN” LED with “COMPLETE.” ean” LED stays on for 5 seconds or display shows “F-” or “E-”.
P4-2 P7-4 P4-1 P7-6 Pin 1 Pin 3 Pilot L1 Relay Power Blast Wax Motor Fuse TurboZone Wax Motor Triac (Also see door 600Ω to 1,800Ω switch circuit) 120V, 60 Hz, 6W Electronic Control Electronic Control Maytag Chopper Dishwashers 3-17...
Wait for at least 10 seconds. If still no drain response, then replace control or LCD display module (whichever one the UI was connected to). 9. Unplug dishwasher or disconnect power. 10. Reassemble all parts and panels. 11. Plug in dishwasher or reconnect power. 3-18 Maytag Chopper Dishwashers...
COMPONENT ACCESS Section 4: Component Access This section provides service parts access, removal, and installation instructions for the “Maytag Chopper Dishwashers.” n Door Spring Adjustment n Installing Insulation Blanket n Removing Door Latch Strike n Accessing Door Components & User Interface...
For models with water softener, make sure that the drain hose stays on the hanger that is on the right-hand side and is tucked in on the side of the unit. Maytag Chopper Dishwashers To adjust the door spring tension, unhook the spring from the rear...
Installing Insulation Blanket (Stainless Steel Tub Models Only) 1. Fasten the blanket on the hooks located on each side of the tub, (see Figures 1 and 2). Figure 1 Figure 1 Figure 2 Figure 3 Figure 2 Maytag Chopper Dishwashers...
(depending on model and door panel design). Jumper, 4-Wire See Figures 2 & 3. User Interface Button, Console Screw User Interface Screw Console Assembly Figure 5 - Pocket Handle Doors Figure 2 - ACU & UI on Outer Door Panel Maytag Chopper Dishwashers...
4. To remove door latch assembly, insert a small flat-blade screwdriver into the clip slots on each side of the latch. Gently push in to release latch clips, (see Figures 2 and 3). Strike Entry Figure 4 Figure 2 Maytag Chopper Dishwashers...
5. There are two tabs on the back of the control that hook into the slots in the door bracket. See Figure 5. Tab Slots Figure 5 - Control Tab Slots Figure 2 - Slide Control to Left Maytag Chopper Dishwashers...
4b. MINI DISPENSER: Use a flat-blade screwdriver on locking clips to remove dispenser assembly (see Figures 2 & 4). Dispenser Assembly Locking Clips Figure 1 - Long Dispenser Inner Door Panel Figure 4 - Mini Dispenser Figure 2 - Mini Dispenser Maytag Chopper Dishwashers...
2. Open right and left side covers, (see Figure 1). Switch Lever Switch Right Cover Left Cover Housing Panels Figure 1 Location of float switch components. See Figure 2. Figure 3 Float Switch Float Stem Switch Lever Figure 2 4-10 Maytag Chopper Dishwashers...
In Tub Components Upper Rack Rails Spray Arm (3 Level) Upper Rack Rails Feed Tube to Middle and Upper Spray Arm Upper Spray Arms Water Inlet Heater Lower Spray Arm Coarse Filter Water Level Float Tub Component Identification Maytag Chopper Dishwashers 4-11...
3. Pull the tracks completely out and align the rack’s front end attachment tabs with the cutout in the track. Push down into place. You will hear a snap when the front end of the rack is secured into place on each side. Maytag Chopper Dishwashers 4-13...
2. Grasp lower spray arm nut and turn 1/4” clockwise to secure in place on diverter housing. 3. Run the Diagnostic Cycle to verify spray arm operation. Figure 2 4-14 Maytag Chopper Dishwashers...
COMPONENT ACCESS Under Tub Components Float Switch Terminal Box Fill Valve Thermostat Blower Fan Drain Pump OWI / NTC Drain Hose Chopper Heater Wash Motor Motor Capacitor Under Tub Component Identification Maytag Chopper Dishwashers 4-15...
2. Release hose clamp and pull off the hose, (see Figure 1). NOTE: Be prepared to catch the water from the sump area. Figure 4 Figure 1 3. Unplug the wire harness connected to the drain pump, (see Figure 2). Figure 2 Maytag Chopper Dishwashers 4-17...
Replace all parts and panels before operating. 4. Remove the OWI from sump assembly. Failure to do so can result in death or 5. Disconnect harness from Optical Water Indicator. electrical shock. FRONT OF DISHWASHER Figure 1 4-18 Maytag Chopper Dishwashers...
Failure to do so can result in death or 5. Accumulator/Screen Assembly electrical shock. 6. Remove Chopper Protector Feed Tube Lower Spray Arm Accumulator Cover Accumulator/Screen Assembly Figure 1 Continued on next page . . . Maytag Chopper Dishwashers 4-19...
Page 68
4. Unlock the three tabs securing the motor and sump See Figure 4. assembly to the tub, (see Figures 2 and 3). Depress Figure 4 Figure 2 - Locked 4-20 Maytag Chopper Dishwashers...
Page 69
7. With the sump assembly flipped over inside the tub, disconnect the following harness: Refer to Figure 6 above for harness locations: n Wash Motor Harness n OWI Harness (or remove OWI from sump) Figure 9 Maytag Chopper Dishwashers 4-21...
Figure 2 Sump Assembly” prior to performing the following steps. 5. Remove Chopper Motor Assembly from sump (see Figure 3). 3. Remove or loosen clamp from sump side of hose (see Figure 1). Figure 1 Figure 3 Maytag Chopper Dishwashers 4-23...
Page 72
9. Remove the Chopper Blade from the motor assembly (see motor assembly (see Figure 5). Figure 7). Chopper Blade Figure 5 Figure 7 NOTE: The Chopper Blade is keyed to fit on the center shaft of the impeller assembly. 4-24 Maytag Chopper Dishwashers...
Page 73
11. To remove the impeller; insert a screwdriver into the motor housing vent to prevent the rotor from turning. Firmly grasp the impeller with the other hand and spin it off the motor shaft. See Figures 9 & 10. Figure 9 Maytag Chopper Dishwashers 4-25...
Page 75
WARRANTY INFORMATION SOURCES IN THE UNITED STATES: FOR PRODUCT SPECIFICATIONS AND WARRANTY INFORMATION CALL: FOR MAYTAG PRODUCTS: 1-800-688-9900 FOR TECHNICAL ASSISTANCE WHILE AT THE CUSTOMER’S HOME CALL: THE TECHNICAL ASSISTANCE LINE: 1-800-832-7174 HAVE YOUR STORE NUMBER READY TO IDENTIFY YOU AS AN...
Need help?
Do you have a question about the MDB series and is the answer not in the manual?
Questions and answers