Technical Information – Top Load Washer MAT12PDBA*, MAT12PDCB*, MAT12PRBA* MAT12PSBA* MAT12PDDA*, MAT12PDDB*, MAT12PSDA*, MAT12PRDA* • Due to possibility of personal injury or property damage, always contact an authorized technician for servicing or repair of this unit. • Refer to Service Manual 16022842 for detailed installation, operating, testing, troubleshooting, and disassembly instructions. ! CAUTION All safety information must be followed as provided in Service Manual 16022842.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Illustration Component Control Board Test Procedure Proper grounding is necessary when handling microprocessor board to prevent damage from static electricity. Results See Control Board Connections Section. Touch Pad Depress the proper button, checking for continuity. Continuity, if not replace.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Illustration Component Step -Down Transformer Coin Sensor Test Procedure Check voltage.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. MOTOR TESTING All four leads of the test cord are required to test the washer drive motor. The following drawings show installation of the test cord on the drive motor. Reversing the motor to agitate or spin is accomplished by reversing wires B and C.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. PROGRAMMING PROCEDURES CODE 607 DISPLAY 6 07 EXPLANATION REGULAR CYCLE PRICE Represents the number of coins. See value of Coin 1 and Coin 2. Adjustable from 0-39 coins by pressing the Permanent Press keypad. NOTE: PS MODELS ONLY- Represent the number of push-in actuations of the coin slide.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. CODE 8.00 DISPLAY 8. 00 EXPLANATION SPECIAL PRICING STOPPING HOUR This is the selection of the hour using military time (24 hour clock) that the Special Pricing will "stop." Adjustable from 0 to 23 by pressing the Permanent Press keypad. Press Woolens keypad once to advance to next code. 9.10 9.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. CODE h.01 DISPLAY h. 01 J.Cd J. Cd C_ _d Ed L.00 L. 00 PS n.CE n. 00 CE U.00 U. 00 EXPLANATION SUPER CYCLE TYPE (Skipped unless super cycle pricing is selected “F.Su”.) This represents the super cycle upgrade option.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Washer diagnostic Program No user program should be in progress. The lid should be closed and the washer tub should be empty before running this test. Enter operator mode using service switch. Push the delicates and knits program keypad for more than one second.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Does washer agitate when "A" is in the display? No Push the woolens program keypad to stop the diagnostics in the current phase. Does washer spin when "A" is in the display? Yes Check wiring and terminations between control board, motor relay and motor. Make sure motor is not bad or tripped out on thermal protection.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. WASHER HELP MODE The mode is entered by depressing Permanent Press keypad while in special pricing option Step 2.XX(or while dAS displays if operation with Maytag Data Acquisition setup). In help mode , the Woolens keypad can be used to advance through three help codes(displayed as 1h.XX, 2h.XX, and 3h.XX).
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. d1 Try to clear diagnostic code by pushing delicate and knits keypad for one second. False diagnostic indication. Control board is ok. Yes Did diagnostic code cancel? No d4 Try to clear diagnostic code by pushing delicate and knits keypad for one second. Replace control board. False diagnostic indication.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. TROUBLESHOOTING CONTROL BOARD FLOW CHART Display is Blank Enter operator mode using service switch.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Washer stuck with 0 minutes remaining in display Lift washer lid.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Will not respond to handheld PDA Does PDA respond to other machines? Check optic window for obstructions, dirt, or scratches. Yes No No response to coin 1 PDA has failed.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. No response to coin 2 Is display blank? No Check the coin mechanism for proper adjustment. Yes Check wiring and termination between second coin drop and control board See blank display section in trouble shooting guide Check lighting. Too much ambient light in the coin drop will cause coins not to be recognized.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. Display flashes in user Mode Replace control board Water runs without program selected Unplug washer. Does water still run? Unplug washer and connector AA1.
Wiring Diagram ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power.
Wiring Diagram ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. LID SWITCH 6 4 3 2 1 CONNECTOR AA3 EXTERNAL DEBIT CARD (OPTIONAL) LINE CONNECTOR L1 N 5 A2 DEBIT GROUND DEBIT POWER E2 E1 A1 MAT12PRBA*, MAT12PRDA SCHEMATIC WATER LEVEL SWITCH FULL 20 GY RD WH GY 20 RD 15 BR RL-9 COMMON PU/WH RL-9 OFF BOARD MOTOR RELAY RD GY 20 PU/WH BK 22.5 VAC 5.
