GE WPRE6100 Technical Service Manual
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GE WPRE6100 Technical Service Manual

Profile washers with electronic control and mode shifter assembly
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GE Consumer & Industrial
Technical Service Guide
October 2006
Profile Washers With
Electronic Control and
Mode Shifter Assembly
31-9145
WPRE6100
WPRE8100
GE Appliances
General Electric Company
Louisville, Kentucky 40225

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Summary of Contents for GE WPRE6100

  • Page 1 GE Consumer & Industrial Technical Service Guide October 2006 Profile Washers With Electronic Control and Mode Shifter Assembly WPRE6100 WPRE8100 31-9145 GE Appliances General Electric Company Louisville, Kentucky 40225...
  • Page 2 If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened. GE Consumer & Industrial Technical Service Guide Copyright © 2006 All rights reserved.

  • Page 3: Table Of Contents

    https://appliancetechmanuals.com Table of Contents AC Line Filter ..................................19 Agitator ....................................15 Automatic Temperature Control (ATC) ........................22 Belt ......................................23 Brake Test ..................................... 40 Component Locator Views ............................14 Control Board Assembly ..............................16 Control Panel ..................................16 Control Features ................................12 Cover/Lid Assembly .................................
  • Page 4 Nomenclature Model Number W P R E 8 1 0 0 G 0 W T Body/Backsplash Color Brand WT = White/Titanium GE Washer Engr. Revision Feature Pack P = Profile Model Year Designator Capacity/Configuration R = King Size Stainless Steel Tub Profile Features...
  • Page 5 https://appliancetechmanuals.com Introduction The new Profile washers have the following features: • HydroWave™ Wash System - The 360-degree stroke of the agitator moves clothes through the water slowly, in a smooth wave-like agitation, delivering thorough, yet completely gentle, cleaning performance. • 3.5 cubic foot tub capacity.
  • Page 6 https://appliancetechmanuals.com FEATURES WPRE6100GWT WPRE8100GWT Capacity King-size (3.50 cubic feet) King-size (3.50 cubic feet) Control Type Rotary-Electronic Rotary-Electronic Agitator Type GentlePower™ GentlePower™ Cycle Countdown & Status Lights Number of Cycles Wash Basket Type Stainless Steel Stainless Steel Wash/Rinse Temperatures Wash/Spin Speed Combinations Multiple Multiple Water Levels...
  • Page 7 https://appliancetechmanuals.com Motor and Drive System The new Profile washer incorporates a new motor and drive system. The 120 VAC input powers a three phase induction inverter/motor assembly. The inverter produces approximately 340 VDC, which is pulse width modulated (PWM) to control motor speed. There is no location to check inverter output voltage to the motor.
  • Page 8 https://appliancetechmanuals.com Shaft and Mode Shifter Overview The shaft and mode shifter assembly consists of the shaft and tube, mode shifter cam, and mode shifter coil. It operates in 2 distinct modes, spin and agitation. The shaft and tube transfers power to the wash system. Motor power is transmitted to the shaft and tube from the drive belt to the drive pulley.
  • Page 9 https://appliancetechmanuals.com Shaft and Mode Shifter Assembly Mode Shifter Coil Mode Shifter Cam Drive Shaft Agitate Position Mode Shifter Coil Mode Shifter Drive Pulley Note: Mode shifter coil energized for agitate mode; cam teeth disengaged from drive pulley. Spin/Idle Position Mode Shifter Coil Mode Shifter Drive Pulley...
  • Page 10 https://appliancetechmanuals.com Mode Shifter Operation - Agitation The mode shifter is controlled by the motor inverter circuit. When the washer starts the agitation cycle, the inverter energizes the mode shifter coil. The magnetic field of the coil lifts the mode shifter cam, disengaging it from the drive pulley.
  • Page 11 https://appliancetechmanuals.com Control Logic Flowchart START CYCLE CYCLE MODE SHIFTER COMPLETED SELECTED MODE SHIFTER AGITATE AGITATION AGITATION SPIN SPIN CYCLE SPIN BASKET TUB FILLS PROGRAM CYCLE CYCLE PROGRAM RUNS BEGINS COASTS TO A PRESSURE RUNS BEGINS ENDS (30 SEC STOP SWITCH (18 SEC) OPENS DISPLAY BLANKS...
  • Page 12 https://appliancetechmanuals.com Control Features Features and appearance may vary between models. Profile Models Controls Load Size Loosely load clothes no higher than the top row of holes in the washer basket. The water level should just cover the clothes. Adjust the load size accordingly. Temperature Select the water temperature for the wash and rinse cycles.
  • Page 13 https://appliancetechmanuals.com Estimated Time Remaining Display � Displays the approximate time remaining until the end of the cycle. � If the estimated time remaining is more than 60 minutes, “1H” will flash in the display followed by the additional remaining minutes. When the time remaining is less than 60 minutes, the timer will count down. �...

  • Page 14: Ac Line Filter

    https://appliancetechmanuals.com Component Locator Views Front View Pressure Hose Suspension Rod Inverter Platform Motor Drain Pump Drive Pulley Belt Motor Pulley Control Panel (in service position) Water Valve AC Line Filter Water Level Switch Secondary Board Main Control Board – 14 –...
  • Page 15 https://appliancetechmanuals.com Washer Components WARNING: Sharp edges may be exposed when Leveling Legs servicing. Use caution to avoid injury. Wear Kevlar gloves or equivalent protection. The front legs are screw type and are adjusted by turning the legs counterclockwise to increase height.
  • Page 16 https://appliancetechmanuals.com Rotate the top of the control panel forward Control Panel approximately 1 inch and slide to the right to unlock the 3 bottom locking tabs. It is necessary to remove the control panel from the backguard and place it in the service position to Lift the panel up and off the cover panel and rotate access: down.

  • Page 17: Control Board Assembly

    https://appliancetechmanuals.com Note: The water temperature control and the Note: The LEDs in the 2 digit display can be as options selector have detents between some of much as -in. lower than the description on the the settings. The washer will function if the knob is backsplash.
  • Page 18 https://appliancetechmanuals.com Water Level Switch • The minimum fill volume is 9 gallons. The water level measures approximately 7½ inches (6 holes) above the bottom of the basket. • The maximum fill volume is 22 gallons. The water level measures approximately 15 inches above the bottom of the basket (between holes 2 and 3 from the top).
  • Page 19 https://appliancetechmanuals.com Water Valve The water valve is a 120 VAC, dual solenoid type, and is accessed by placing the control panel in the service position. It is inserted and retained in a cutout in the rear of the backguard and held in place by 2 hex-head screws.
  • Page 20 https://appliancetechmanuals.com Lid Switch The lid switch is installed in the cover assembly at the right front corner of the lid recess. The switch is held to the underside of the cover by a latch. The lid switch is a safety feature that prevents the washer from agitating or spinning when the lid is open.

  • Page 21: Cover/Lid Assembly

    https://appliancetechmanuals.com Front Panel Cover/Lid Assembly The front panel is a removable, galvanized sheet The cover/lid assembly is fastened at the front by metal section. The front panel is fastened at the 2 screws, on the sides by 2 metal catches, and at top by 2 metal spring clips, and at the bottom by 2 the back by 3 locking tabs that protrude from the metal tabs which protrude from the base of the unit...
  • Page 22 https://appliancetechmanuals.com The main control should fill the tub with water within Automatic Temperature Control (ATC) +/- 10 to 15°F of set temperature by opening or • The automatic temperature control (ATC) is a feature closing the hot and cold water valves. that utilizes a thermistor to regulate the water fill temperature.
  • Page 23 https://appliancetechmanuals.com Drain Pump Belt The drain pump is coupled to a 120 VAC, 60 Hz, 85 • Since the belt provides constant tension, there is watt motor. The pump motor has an approximate no need for adjustments (an adjustment method resistance value of 12 Ω.
  • Page 24 https://appliancetechmanuals.com Wire Tie Note: • A new belt will be slightly smaller than the drive pulley. • A belt that has been installed on the drive pulley will stretch to the diameter of the pulley over time. This is normal and does not indicate a bad belt.
  • Page 25 https://appliancetechmanuals.com Inverter/Motor The inverter/motor assembly receives 120 VAC, which the inverter converts to approximately 340 VDC. The inverter then uses pulse width modulation (PWM) to supply the motor with an AC varying frequency to control speed. Note: There is no location to check inverter output voltage to the motor.
  • Page 26 https://appliancetechmanuals.com Note: Minimal clearance exits between the 2 rear Harness Fuse -in. motor nuts, isolators, and the drive pulley. A non re-settable 10 amp fuse is wired in the neutral Raise the front of the motor high enough to side of the line. The fuse is wrapped in the motor disengage the motor alignment pin from the pin harness located along the right side of the cabinet.
  • Page 27 https://appliancetechmanuals.com Tub Cover Tub Assembly Note: The tub cover can be replaced without Note: The motor can be replaced without removing removing the tub. the tub. (See ) The tub assembly must Inverter/Motor. be removed when replacing the spin basket, outer To remove the tub cover: tub, or certain speed drive components.
  • Page 28 https://appliancetechmanuals.com Caution: Use only a rubber mallet, dead blow hammer, or impact wrench to remove the hub nut. Use of a steel head hammer may result in damage to the spin basket. Note: The word “LOOSEN” and an arrow appear on the hub nut.
  • Page 29 https://appliancetechmanuals.com Note: The front and rear rod and spring assemblies Shaft and Mode Shifter Assembly have different spring compressions and should not be interchanged. The rods are color-coded to ensure The shaft and mode shifter assembly consists of the they are replaced in the correct position. Note the shaft and tube, mode shifter cam, and mode shifter color location before removing.
  • Page 30 https://appliancetechmanuals.com Invert the tub assembly on a protected surface Run the belt off the drive pulley and remove the and remove the plastic tie that holds the flood ¾-in. pulley nut. hose to the platform. Pulley Nut Plastic Tie Disconnect the mode shifter coil wire harness Note: When replacing pulley, tighten pulley nut to from the motor.
  • Page 31 https://appliancetechmanuals.com Remove the three -in. hex-head bolts from the bottom of the platform. (Continued next page) – 31 –...
  • Page 32 https://appliancetechmanuals.com Remove the inverted single -in. hex-head bolt from the top of the platform. Note: Torque the four -in. hex-head bolts to 90 in. lbs. when reinstalling. Inverted Bolt Lift the shaft and mode shifter assembly from the platform. Shaft and Mode Shifter Assembly –...

  • Page 33: Diagnostics And Service Information

    https://appliancetechmanuals.com Diagnostics and Service Information Wash Cycle Time Chart CYCLE TIME WITH OPTIONS CYCLE TIME AUTO SOAK AUTO SOAK 2ND RINSE EXT SPIN AUTO SOAK 2ND RINSE EXT SPIN PREWASH HEAVY COTTONS LIGHT HEAVY CASUALS LIGHT HEAVY EASY CARE LIGHT HANDWASH LIGHT DELICATES...

  • Page 34: Field Service Mode

    https://appliancetechmanuals.com Field Service Mode Entering the Field Service Mode BEGIN The washer control has a field service mode that can be PRESS AND HOLD THE utilized by the service technician in order to test critical START/PAUSE BUTTON components and to access error codes. This field service mode will help the service technician to quickly identify failed or improper operation of these components.
  • Page 35 (shown at right) is designed for both Profile and GE washers. The Profile washers have a 2-digit display with 3 LEDs. The GE models use 5 LEDs rather than a display to note cycle progression. The large chart below indicates only those areas of the chart that will be displayed for Profile models.
  • Page 36 https://appliancetechmanuals.com Knob Position Function Description Position 0 LED Check Lights all LEDs on display. Position 1 Model Code Factory code setting for main control. Position 2* EEPROM Error Control memory check. Error requires main control replacement. (Rinse LED On) Position 2* Thermistor Error At the start of each wash cycle (except in the tap cold temperature (Wash LED On)

  • Page 37: Inverter/Motor Error Codes

    https://appliancetechmanuals.com Exiting the Field Service Mode FIELD SERVICE MODE ROTATE THE CYCLE SELECTOR KNOB TO ANY LOSS OF ROTATE THE CYCLE LOCATION OTHER THAN POWER TO LEDs LIT (88) SELECTOR KNOB TO A CONTROL LOCATION WHERE ALL 30 MINUTE LEDs ARE LIT (88) TIMEOUT PRESS AND HOLD THE FROM...
  • Page 38 https://appliancetechmanuals.com Inverter/Motor Signal LED Errors • When excessive stop time is encountered, more than 25 seconds, the LED blinks once for ¼ second and then off for the remainder of a 6 second period. • When a broken coupling or slipping belt is detected, the LED blinks twice at a rate of ¼ second on and ¼ second off for the remainder of a 6 second period.

  • Page 39: Inverter/Motor Test

    https://appliancetechmanuals.com Inverter/Motor Test Voltage readings: MAIN CONTROL BOARD C2 Pin 1 = Gnd C2 Pin 3 = N C2 Pin 5 to Pin 3 = 120 VAC C2 Pin 6 to Pin 3 = 120 VAC with lid switch closed C7 Pin 1 to Pin 2 = 135 VDC** C7 Pin 1 to Pin 2 = 30 VDC** C4 Pin 5 to Pin 1 = 9 VDC*...
  • Page 40 https://appliancetechmanuals.com Brake Test The brake resistor is permanently molded into the underside of the inverter cover. • Tub should stop spinning 7 seconds after lid is lifted. • If the tub takes approximately 10 seconds to stop, check drive belt for wear. •...

  • Page 41: Schematic

    https://appliancetechmanuals.com Schematic WARNING: Disconnect electrical power before servicing. Caution: Label all wires prior to disconnection. Wiring errors can cause improper and dangerous operation. Verify operation after servicing. – 41 –...
  • Page 42 The suspension rod and spring assembly, and main electronic control board, if any of these parts Fifth Year should fail due to a defect in materials or workmanship. GE will also replace the washer lid or cover, if they should rust under operating conditions. During this additional four-year limited From the date of the warranty, you will be responsible for any labor or related service costs.

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Wpre8100

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