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GE Profile WPGT9150, Technical Service Manual

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GE Profile WPGT9150 Technical Service Manual Download Page 32

– 32 –

Troubleshooting

The dryer control has a service test mode that can be utilized by the service technician in order to test 
critical components and to access error codes. This test mode will help the service technician to quickly 
identify failed or improperly operating dryer components. 

To enter the test mode:

To exit the test mode:

With the power connected but in the idle state (no 
display on the SSD):

1.  Press and hold the WASH/RINSE and the 

SPIN SPEED buttons, then press the POWER 
button.

2.  If the control does not display “t1”, the 

press and hold sequence was not executed 
correctly.

3. Press 

the 

POWER button to clear the display, 

then re-enter the Service Mode.

4. Press 

the 

CYCLE button to navigate from 

test to test (this also exits an existing test).

5. Press 

the 

START button to enter/enable a 

test and to navigate from subtest to subtest.

Press the POWER button during the test selection 
mode.

Note: If no key is pressed for 15 minutes, the control 
will automatically exit the Service Mode and enter 
the Idle State.

Test Mode

Description

T1

LED Component Check

T2

Software Revision

T3

Water Valve and Dispenser Check

T4

Drain Pump Check

T5 Agitate 

Test

T6

Spin Test

T7

Controlled Spin Test Approximately 230 RPM

T8

Error Code Test

Test Mode

Summary of Contents for Profile WPGT9150

Page 1: ...GE Appliances General Electric Company Louisville Kentucky 40225 31 9171 GE Profile High Efficiency Washer WPGT9150 Technical Service Guide June 2008 GE Consumer Industrial Start Power Start Power ...

Page 2: ...To avoid personal injury disconnect power before servicing this product If electrical power is required for diagnosis or test purposes disconnect the power immediately after performing the necessary checks RECONNECT ALL GROUNDING DEVICES 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 ...

Page 3: ...es 35 Introduction 5 Inverter 16 Inverter and Main Board Pin Connectors 14 Main Control Board and LCD 15 Motor Assembly 26 Nomenclature 4 Operation Overview 9 Outer Tub and Suspension Assembly 25 Pressure Sensor Water Level Switch 18 Schematic 38 Test Mode 32 Thermistor ATC Control Auto Temp 24 Top Cover 20 Troubleshooting 32 Warranty 39 Wash Basket 21 Wash Cycle Chart Example 11 Washer Components...

Page 4: ...1997 S The letter designat ing the year repeats every 12 years Example T 1974 T 1986 T 1998 Model number and serial number are located on the rear of backsplash Note The technical sheet is located inside the control panel Serial Number W P G T 9 1 5 0 H 0 W W Model Number GE Washer Feature Pack Common Brand Features Exceptions H Energy Star P Profile N Special Control Platform B Buttons Touch Pad ...

Page 5: ...f water needed for optimal wash performance Other features include Auto Balance Suspension The washer is programmed to correct out of balance situations See Operation Overview Flow ThruTM Dispensers Each of the four dispensers is timed to release at the right time during the wash cycle Each reservoir is flushed with water to pre dilute the product before adding it to the washer This flushing actio...

Page 6: ...soiled colorfast cottons household linens work and play clothes ______________________________________________________________________________________ COMFORTER For comforters and bedspreads _____________________________________________________________________________________ COTTONS TOWELS For cottons and towels _____________________________________________________________________________________...

Page 7: ...are always cold to help reduce energy usage and reduce setting of stains and wrinkles Follow the fabric manufacturer s care label when selecting the wash temperature To change the wash temperature press the WASH RINSE button until you have reached the desired setting Note The first 10 seconds of the wash fill are always cold This feature assists in conditioning the fabric and preventing stains fro...

Page 8: ...insing is desired to remove excess dirt and detergent from soiled loads Delay Start You can delay the start of a wash cycle for up to 24 hours Press the DELAY START button to choose the number of hours you want to delay the start of the cycle then press the START button The machine will count down and start automatically at the correct time Note If you open the lid when the delay is counting down ...

Page 9: ...r the first fill the infusor and basket lock together and rotate to measure the clothes load During this time the motor momentum is measured again The washer compares this information to the previous dry load sensing measurements and determines if additional water is required Note Dry load and wet load sensing are used on all cycles except COMFORTERS COMFORTERS cycle defaults to the maximum water ...

Page 10: ...en refills and agitates to allow the infusor wash cycle to redistribute the load before starting the spin again The washer will attempt to rebalance the load three times before optimizing the spin to a lower speed where balance is sustainable Spray Rinse The infusor and wash basket turn at a slow speed while fresh clean water is added to the wash load The spin cycle then drains this rinse water an...

Page 11: ...Adjust Water Fill only if needed Adjust Water Temp Spin Information Maximum spin speeds will vary depending on the cycle Hand wash 500 rpm Delicate 600 rpm Normal 1000 rpm Heavy 1000 rpm The Delicate cycle ramps up to maximum speed by first spinning to 400 rpm then pausing then to 500 rpm Normal and Heavy cycles ramp up to maximum speed by first spinning to 400 rpm and pausing then to 700 rpm and ...

Page 12: ... 12 Component Locator Views Tub Cover Balance Ring 304 Stainless Wash Basket Infusor Continued Next Page Motor Pressure Sensor Hose Wiring Harness Drain Pump Suspension Rod ...

Page 13: ... of the top cover in front of the bleach dispenser Lid Switch Pressure Sensor Bleach Water Reservoir Additive Dispenser Underside of Top Cover Magnet Main Control Board Inverter Water Valve Assembly Brake Resistor RF Choke Fuse Water Inlet Ports Backsplash A C Input As Seen from Back of Washer Pressure Sensor ...

Page 14: ...ectors Lid Switch Thermistor Clutch Motor Ground Power LED Hall Sensor Water Valve Assembly Pressure Sensor Washer Motor Drain Pump Brake Resistor Main Board CON2 Main Board CON1 120 VAC Input From RF Choke LCD Display Power Switch Cable 1 to CON2 Cable 2 to CON1 ...

Page 15: ...ertically and remove Control System The washer control system consists of two main components Main PCB Inverter PCB Caution To prevent electrostatic discharge from damaging any electronic components use an ESD wristband or touch a grounded metal surface before servicing Main Control Board and LCD The main control board and LCD are attached to the backsplash as one unit The main control board and L...

Page 16: ...he inverter board is enclosed in a protective box mounted on the top cover under the backsplash To access and remove the inverter Remove backsplash See 1 Backsplash Remove the 2 Phillips head screws that hold the 2 inverter box in place 4 Mark and remove the wiring from the inverter board Remove the inverter Testing the Inverter 120 VAC Input From RF Choke RF Choke Fuse When the washer is plugged ...

Page 17: ...ake Resistor The brake resistor absorbs energy from the reversing of the motor during the brake cycle The brake resistor only operates when the washer loses power or the lid is lifted during a cycle Under normal operation the tub coasts to a stop at the end of a cycle The approximate resistance value of the brake resistor is 70 Ω If the resistor is shorted the motor will not start If the resistor ...

Page 18: ...which turns off the water valves when the desired water level is achieved Note The water level will vary depending on the load size which is measured by the dry load and wet load sensing cycles This information is sent to the inverter which then determines the appropriate water level Minimum fill is 17 5 gallons and maximum fill is 27 gallons Continued Next Page Set the wash cycle to SNEAKERS This...

Page 19: ... power from the inverter They are connected to the 6 pin blue connector on the inverter board See Inverter and Main Board Pin Connectors When energized there should be approximately 13 VDC at the appropriate coil To remove the water valve assembly Remove the backsplash See 1 Backsplash Water Distribution Pipe Water Valve Assembly Hot Water Cold Water Additive Softener Bleach Continued Next Page Pr...

Page 20: ...inlet hoses It may be necessary to use a small flat blade screwdriver to pry the hoses off Continued Next Page Inlet Hose Inlet Hose Top Cover The top cover is held in place by 2 Phillips head screws located on the top back of the washer and two front tabs To remove the top cover Remove the 2 Phillips head screws that hold the 1 top cover in place 2 Remove the 4 Phillips head screws 2 on each side...

Page 21: ...ct Disconnect Disconnect Disconnect Disconnect Wash Basket Caution If the basket is not free to rotate damage to the clutch coupler can occur Ensure that the washer is in the spin mode before removing the wash basket The wash basket will rotate freely when it is in spin mode Do not attempt to remove the hub nut if the basket is not free to rotate To remove the wash basket Remove the top cover See ...

Page 22: ...ht of 8 ft The maximum length of the drain hose is 10 ft An accessory drain hose extension is not available at this time The drain pump will operate independently of other mechanical components and will evacuate water at various times during the cycle The drain pump motor has an approximate resistance value of 11 Ω Pins 1 and 2 on the light blue 2 pin connector on inverter board should measure 120...

Page 23: ... appears empty Use care to avoid water spills Disconnect power to the machine 1 Remove the 4 Phillips head screws 2 on each 2 side that hold the back cover in place Remove the back cover 4 Remove the drain hoses from the pump Note The drain hoses are difficult to remove due to a sealing compound used at the factory a Squeeze each clamp and slide it back b Carefully break the hoses loose by inserti...

Page 24: ...er temperature The thermistor has a negative temperature coefficient as temperature increases resistance decreases The thermistor is located in the bottom of the outer tub under the wash basket Thermistor Bottom View To determine the temperature of the incoming water the washer control measures the difference between the voltage sent and the voltage returned from the water temperature sensor The w...

Page 25: ...mblies The rod and spring assemblies are attached to each corner of the washer cabinet They extend down and connect to the bottom of the outer tub To remove the outer tub WARNING The outer tub assembly is heavy and requires two people to remove it from the washer housing Care should be taken when removing and installing the outer tub assembly Remove the top cover See 1 Top Cover Remove the drain h...

Page 26: ...l sensor and permanent magnet rotor The motor varies speed and torque when the pulse width modulated voltage from the inverter changes frequency The motor reverses rotational direction when the inverter reverses electrical polarity to the motor COIL STATOR PERMANENT MAGNET PERMANENT MAGNET HALL SENSOR POWER ROTOR SHAFT STATOR ROTOR NUT Rotor ROTOR POWER HALL SENSOR ASSEMBLY The washer motor has an...

Page 27: ...Hall sensor plugged into the inverter board Rotate the spin basket by hand There should be 12 VDC pulses as the basket is rotated If the pulses are present the Hall sensor is good 1 2 3 4 Inverter Board To remove the rotor and stator WARNING The rotor is not grounded Unplug the washer before servicing to avoid electrical shock To access the motor the washer must be placed 1 on its side Place a tow...

Page 28: ... the motor is rotating the infusor is rotating The clutch only locks or unlocks the wash basket When the washer first starts a cycle the infusor moves back and forth several times to make sure the basket and infusor are in the unlocked position before starting This action is called clutching and confirms that the clutch motor is in the unlocked position Note Wash cycle patterns will vary depending...

Page 29: ...inverter supplies 120 VAC to the clutch motor through the brown and white wires when the clutch motor changes position Note Disconnect power and unplug the clutch motor connector at the inverter board The clutch motor has an approximate resistance value of 2000 Ω Ω This can be measured between the white and brown wires on the inverter board See Inverter and Main Board Pin Connectors The rotation o...

Page 30: ...ler plate Disconnect Bearing Housing Assembly To remove the bearing housing assembly Remove the motor assembly and clutch shifter 1 assembly See Motor Assembly and Clutch Shifter Assembly Remove the screw that holds the ground wire 2 to the bearing housing Remove the sixteen 10 mm hex head screws from the bearing housing assembly 3 Remove the bearing housing assembly Ground Wire Note When reassemb...

Page 31: ...31 Component Logic Flow Chart Control Panel Thermistor Motor Water Valve Drain Pump PROCESSING INVERTER PROCESSING Lid Switch Clutch Motor Pressure Sensor Hall Sensor Brake Resistor INPUTS INPUTS OUTPUTS ...

Page 32: ...display t1 the press and hold sequence was not executed correctly 3 Press the POWER button to clear the display then re enter the Service Mode 4 Press the CYCLE button to navigate from test to test this also exits an existing test 5 Press the START button to enter enable a test and to navigate from subtest to subtest Press the POWER button during the test selection mode Note If no key is pressed f...

Page 33: ...er through the pretreat dispenser and will remain this way until the START or CYCLE button is pressed START button is pressed a fourth time The display will toggle between d and the water level The control will turn on the cold valve and dispense water through the bleach dispenser This will remain this way until the START or CYCLE button is pressed START button is pressed a fifth time The display ...

Page 34: ...6 When the CYCLE button is pressed the system exits the test and advance to next test t7 T7 The display will initially show t7 Press the START button Once the START button is pushed the display will initially toggle between t7 and the estimated RPM about 230RPM 20RPM The control will enable Alpha spin mode and remain there for a maximum of 3 minutes or until the CYCLE or START button is pressed Wh...

Page 35: ...tion E1 Overflow Error Critical E2 Inverter Not Operating Correctly Critical E4 Inlet Valve Failure Critical E5 Pump Failure Critical E6 Clutch Error Critical E7 Pressure Sensor Failure Critical E8 Lid Switch Failure Critical E9 EEPROM Error Control Inoperable D1 Motor Not Rotating Properly Critical D2 No Brake Resistance Critical D3 Coupling Error Critical D4 IPM Thermistor Error Non Critical D5 ...

Page 36: ...ll not come on Water not filling Filter clogged or fill hoses may Make sure that the water valve filters blue and properly be kinked orange screen must be free of solids on the unit are not clogged Turn off water and check filter by disconnecting hose at machine Check that fill hoses are not kinked or clogged Energy efficiency This is an energy efficient washer As a result the temperature settings...

Page 37: ... 37 ...

Page 38: ... 38 Schematic P No 3858EL3002E ...

Page 39: ...Product not accessible to provide required service What Is Not Covered in the United States Warrantor General Electric Company Louisville KY 40225 Staple your receipt here Proof of the original purchase date is needed to obtain service under the warranty One Year Any part of the washer which fails due to a defect in materials or workmanship During this From the date of the limited one year warrant...

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