KitchenAid KUDE20FB*0 Technical Education

Contents

KitchenAid KUDE20FB*0 Technical Education Manual pdf 109 page image

TESTINGKitchenAid 2013 Stainless Steel Tall Tub Dishwasher n 6-9For Service Technician Use OnlyDANGERElectrical Shock HazardOnly authorized technicians should performdiagnostic voltage measurements.After performing voltage measurements,disconnect power before servicing.Failure to follow these instructions can result indeath or electrical shock.Dispenser CircuitThis test will check the wiring to the dispenser and thedispenser solenoid or wax motor itself. The following itemsare part of the dispenser circuit.■ Harness/Connection■ Dispenser Solenoid/Wax Motor■ Control BoardTest Procedure1. Check for obstructions or mechanical binding preventingthe dispenser lid from opening. Repair or replace asnecessary.2. Are all the loads controlled by TRIACS not working?¾ YES – check for open door switch, TRIAC fuse, or pilotrelay.¾ NO – just the Fill Valve. Go to step 3.3. Unplug dishwasher or disconnect power.Strip Circuit – Dispenser4. Remove outer door panel to access control board.5. Unplug connector P9 from control board.6. Check the dispenser solenoid or wax motor (dependingon model) and harness—using an ohmmeter, measure theresistance between P9-1 and P9-3.Solenoid:¾ If the resistance is between 280-340 ohms, thesolenoid valve and harness are good. Go to step 7.¾ If outside the range, replace the dispenser solenoid.¾ If an open circuit is detected, check connections andharness continuity between control and dispenser. Ifgood, replace the dispenser solenoid.Wax Motor:¾ If the resistance is between 1.4-2.8k ohms, the waxmotor and harness are good. Go to step 7.¾ If outside the range, replace the dispenser wax motor.¾ If an open circuit is detected, check connections andharness continuity between control and dispenser. Ifgood, replace the dispenser wax motor.7. Reconnect P9 to control board.8. Plug in dishwasher or reconnect power.9. Check for AC voltage from the Control. Start theDiagnostic Cycle and at the proper interval measure for ACout of the control between P9-1 to P9-3 using a voltmeterset to AC.IMPORTANT: The Dispenser Solenoid or Wax Motor mustbe connected to the control board to measure voltageaccurately!!!¾ If no AC voltage is measured, replace the control boardand retest.¾ If 120V AC is measured and dispenser motor isenergized, go to step 10.10. Perform Diagnostic Cycle to verify repair.11. Unplug dishwasher or disconnect power.12. Reassemble all parts and panels.13. Plug in dishwasher or reconnect power.