Technical Information – Top Load Washer MAT12PDAA*, MAT12PRAA*, MAT12PSAA* • 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.
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 Voltage and Edge Board Pin Connection Points Results See Control Board Section Proper grounding is necessary when handling microprocessor board to prevent damage from static electricity. Touch Pad Depress the proper button, checking for continuity.
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. Control Board EE Connection CC Connection DD Connection BB Connection FF Connection AA Connection Connection Pin and Description AA AA1 AA2 AA3 AA4 AA5 AA6 AA7 AA8 AA9 AA10 Board Power Source & Relays 3.8 VAC (AA1 to AA2) (7.6 VAC AA1 to AA5) Center Tap 22.6 VAC (AA3 to AA4) 22.6 VAC (AA4 to AA3) 3.8 VAC (AA5 to AA2) 7.
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 07 710 7 10 WASH & AGITATION CYCLE This is the number of minutes for Wash. Adjustable from 8-15 minutes by pressing the Permanent Press keypad. Press Woolens keypad once to advance to next code.
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 9.10 9. 10 A.00 A. 00 SC b.05 b. 05 C.20 C. 20 d.00 d. 00 CS EXPLANANTION 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.
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. Check wiring and terminations between water valves, pressure switch and control board. Remove connector BB. Does 115VAC appear between the black and red wires on connector BB? Replace pressure switch or hose.
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 spin when an "S" is in the display? No Check wiring and terminations between the control board and spin relay. Make sure motor is not bad or tripped out on thermal protector. Push the woolens program keypad to stop / start the diagnostics in the current phase. No Yes Washer check ok.
Component Testing Procedures ! WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless testing requires power. F1 Try to clear diagnostic code by pushing delicate and knits keypad for one second. Yes Did diagnostic code cancel? No F4 Try to clear diagnostic code by pushing delicate and knits keypad for one second. Replace control board.
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. Does display contain a diagnostic code? Make sure washer is plugged in to live power source Enter diagnostic code trouble shooting guide Yes No Plug in washer.
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 MEQ Does MEQ respond to other machines? Check optic window for obstructions, dirt, or scratches. Yes No If problem still exists replace control board MEQ 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? Check the coin mechanism for proper adjustment. No 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 Water runs without program selected Unplug washer and connector CC and FF.
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.
