W10914074 Reva

FOR SERVICE TECHNICIAN'S USE ONLY

NOTE: This sheet contains important Technical Service Data.

Tech Sheet

Do not remove or destroy

W10947A

Assembly: W109473A

Table of Contents

Table Caption: This table provides a detailed index for a service manual, outlining sections on safety, specifications, control assembly and pinout, circuit diagrams, diagnostic procedures, error codes, and troubleshooting for a dishwasher.

Safety

FOR SERVICE TECHNICIAN'S USE ONLY

Voltage Measurement Safety Information

When performing live voltage measurements, you must do the following:

• ■ Verify the controls are in the off position so that the appliance does not start when energized.
• ■ Allow enough space to perform the voltage measurements without obstructions.
• ■ Keep other people a safe distance away from the appliance to prevent potential injury.
• ■ Always use the proper testing equipment.
• ■ After voltage measurements, always disconnect power before servicing.

Specifications

ELECTRICAL SUPPLY:

(Under load) 60 Hz, 120 VAC

LOWER SPRAY ARM ROTATION:

25 to 40 rpm

SUPPLY WATER FLOW RATE:

To fill 2 qt (1.9 L) in 27 seconds, 120 psi maximum, 20 psi minimum

UPPER SPRAY ARM ROTATION:

25 to 35 rpm

SUPPLY WATER TEMPERATURE:

120°F (49°C) (Before starting a cycle, run water from sink faucet until hot.)

REPAIR KITS

Vinyl Touch-Up Kits: 675576 (Blue), 676453 (White), 676455 (Gray)

WATER CHARGE:

1.3 gal. (4.8 L) first fill approximate,

1.1 gal. (4.3 L) other fills

Control Assembly

FOR SERVICE TECHNICIAN'S USE ONLY

Meter Check of Loads

Fuse Service and Diagnostic Checks:

• ■ For wash/drain motors fuse and triac load fuse.
• ■ Verify harness connections to all loads and control are made.
• ■ Check stored failure code and/or operation of loads during Service Diagnostics Cycle.

Triac Fuse Diagnostics:

Triac loads; Dispenser, Diverter Motor, Fill Valve, Lower Spray Arm (some models)

• ■ If any of the triac loads work, then the triac fuse is OK. Diagnose and repair non-working triac loads.
• ■ If all triac loads fail to operate, triac fuse may be open. Check the fuse and replace control if fuse is open. Inspect and check resistances of all loads on fuse. If any loads are open, shorted, or show evidence of overheating or pinched wires, replace loads and/or repair wires.

Wash/Drain Motor Fuse Diagnostics

• ■ If both the wash and drain motors fail to operate, motor fuse may be open. Check the fuse and replace control if fuse is open. Inspect and check resistances of both motor loads. If either motor is open, shorted, or shows evidence of overheating or pinched wires, replace loads and/ or repair wires.
• ■ If only wash or drain motor operates, fuse is OK. Use meter to measure non-operational motor's three phase resistances.
• ■ If a phase is open (> 1,000 W ) or unequal to the others, motor is bad. Replace motor.
• ■ If all phases are equal and within range (see wash/drain circuit), use meter to verify wiring harness continuity (< 3 W ) from control connection to motor phase.
• ■ If harness continuity is OK, control is bad. Replace control.
• ■ If harness continuity is open or intermittent, harness is bad. Repair/replace harness.

NOTE: If triac or motor fuse is open, inspect and check resistances of all loads on fuse. If any loads are open, shorted, or show evidence of overheating or pinched wires, replace loads and/or repair wires.

FOR SERVICE TECHNICIAN'S USE ONLY

FOR SERVICE TECHNICIAN'S USE ONLY

7

8

FOR SERVICE TECHNICIAN'S USE ONLY

FOR SERVICE TECHNICIAN'S USE ONLY

Service Diagnostics Cycle

FOR SERVICE TECHNICIAN'S USE ONLY

Service Diagnostics Cycle Notes

• 1 To invoke the Service Diagnostics cycle, perform the following while in Standby:
• ■ Press START/RESUME to wake up control panel.
• ■ Press any three keys in the sequence 1-2-3-1-2-3-1-2-3 with no more than 1 second between key presses.
• ■ The Service Diagnostics cycle will start when the door is closed.
• ■ To rapid advance one interval at a time, press the START/RESUME key. Rapid advance may skip sensor checks as some checks require two complete intervals.

NOTE: While you are in the Diagnostic Cycle, the Start/Resume feature is turned off (for example, Auto Resume after door interrupts) and the Start/Resume key becomes an individual advance key.

• ■ Invoking Service Diagnostics Cycle clears all status and last run information from memory and restores defaults. It also forces the next cycle to be a sensor calibration cycle.
• ■ Drain and wash motors will pulsate on and off.
• ■ Last Run cycles and options returned to default.
• ■ Last Run Delay returns to the lowest delay increment.
• ■ Calibration cycle may force an extra rinse to occur prior to final rinse (to assure clear water), then calibrates the OWI and the fill amount during the final rinse.
• ■ A tone will play when Service Error 1 is displayed.
• ■ Operating state returns to Standby upon completing or terminating the Service Diagnostics cycle.
• 2 Turn on all LEDs immediately upon receiving entry sequence (even if door is open) and