GE DPGT750EC/GC manual

MODEL SERIES: DPGT750EC/GC TECHNICAL SER VICE GUIDE GE Consumer Products Profile Gas and Electric Dryers H E L P B A C K S T A R T S T O P H O M E M Y C Y C L E P O W E R PUB # 31-9104 07/03[...]

– 2 – IMPORT ANT SAFETY NOTICE The information in this service guide is intended for use by individuals possessing adequate backgrounds of electrical, electronic, and mechanical experience. Any attempt to rep air a major appliance may result in personal injury and property damage. The manufacturer or seller cannot be responsible for the interpr[...]

– 3 – T able of Content s Airflow Diagram (Gas and Electric Models) .................................................................................... 1 5 Backsplash ................................................................................................................................... 2 0 Belt Switch ..............................[...]

– 4 – GE Dryer Feature Pack Common Brand Features Exceptions: H = Energy S t ar P = Profile™ K, N = S pecial S = S p acemaker® D P G T 7 5 0 E C 0 W W Capacity/Configuration L = Large S = Super X = Extra-Large K = Compact G = Giant Control Platform B = Buttons (T ouch Pad) T = T ouch Screen Q = QuickClean S = S tationary R = Rotary F = Fabri[...]

– 5 – W arranty For The Period Of: W e W ill Replace: One Y ear Any part of the dryer which fails due to a defect in materials or workmanship. During this From the date of the full one-year war ranty , GE will also provide, fr ee of charge, all labor and related ser vice costs to original purchase replace the defective part. Second Y ear Any pa[...]

– 6 – Overview General The GE Profile Harmony Dryer is part of the GE Profile Harmony Clothes Care System utilizing the latest developments in dryer technology . Most conventional drying systems have a single motor that powers both the blower and the drum. Therefore, the blower fan and dryer drum are powered at the same rate of speed. If air fl[...]

– 7 – P O W E R M Y C Y C L E S B A C K H E L P S T ART S TOP H O M E Features of the dr yer control panel 1 POWER. Press to “wake up” the display . If the display is active, press to put the dryer into standby mode. Y ou may also press the T ouch Screen or any button to “wake up” the display . NOTE: Pressing POWER does not disconnect t[...]

– 8 – Quick Start Getting Star ted If the T ouch Screen is dark, press POWER or the T ouch Screen to access the dr y cycles menu. Clean the lint filter . IMPORT ANT : Clean the lint filter each time you use the dryer . Add clothes. Do not overload. This wastes energy and promotes wrinkling. Select one of the four drying methods from the Home Sc[...]

– 9 – Dry Cycles Dr ying by Fabric T ype If the T ouch Screen is dark, press POWER or the T ouch Screen to access the dr y cycles menu. The default cycle settings are based on standard load types. Always follow the fabric manufactur er’s care label when laundering. • Blends • Cottons • Delicates • Knits • Polyester • Silks (W asha[...]

– 10 – Summary Screen SUMMAR Y SCREEN 0:36 TIME OPTIONS TEMP DR YNESS CYCLE COTTONS MORE DRY About the Summar y Screen After selecting a dr y cycle, the Summar y Screen displays the automatic settings for the cycle you have chosen. Y ou can adjust these by touching the screen location for any of the settings shown. If you change any of the auto[...]

– 11 – Summary Screen OPTIONS END OF CYCLE SIGNAL MIN 20 EXTENDED TUMBLE DELA Y ST ART OK About the Dr ying Options T ouch the OPTIONS pad on the T ouch Screen to select drying options. After selecting any dr ying options, press OK to save your setting. Delay Start T ouch the DELA Y ST ART pad repeatedly to set a delay time of up to 12 hours. T[...]

– 12 – Modifying, Renaming or Deleting a “My Cycle” T o modify the settings of a “My Cycle” from the Home Screen: 1 Press the MY CYCLES button. 2 Select MODIFY from the T ouch Screen menu. 3 Select the cycle name from the T ouch Screen menu. 4 Change any of the automatic settings and select any options. 5 Press SA VE on the T ouch Scree[...]

– 13 – TROUBLE SHOOTER MACHINE PREFERENCES HOME SCREEN HELP About the Help Feature Pressing the HELP button from the Home Screen allows you to locate troubleshooting tips for common dr yer problems, to find help with using the Home Screen or to set machine preferences. Pressing the HELP button while on any other screen allows you to find additi[...]

– 14 – Consumer Help Screens The machine settings on the Help feature allow you to control the volume of the button beep and end-of-cycle signal, and turn the washer/dryer communication feature on or off. Press the HELP button, then select from the on-screen options. Button Beep The button beep controls the volume of the beep that is made when [...]

– 15 – Operation Overview LINT FIL TER EXHAUST AIR INLET AIR AREA Airflow Diagram (Gas and Electric Models) E X T RA LOW 1 0. 5 A M P S 115F - 12 5F 2500 W 1500 0 B T U LOW 16 A M P S 130F - 140F 4000 W 18000 B T U ME DI UM 19 A M P S 145F - 155F 5000 W 22000 B T U HIGH 24 A M P S 160F - 175F 6000 W 25000 B T U GA S M ODE L AP P RO X I M AT E T[...]

– 16 – Electric Model Drive Motor Idler Pulley Blower Motor Outlet Thermistor & Thermostat Heater Housing Inlet Hi-Limit Thermostat Inlet Safety Thermostat Inlet Thermistor TRIAC Board Component Locator Views[...]

– 17 – Gas Model Inlet Thermistor Combustion Chamber Inlet Hi-Limit Thermostat Outlet Thermistor & Thermostat Gas V alve Blower Motor Drive Motor Idler Pulley Ignitor Inlet Safety Thermostat Flame Sensor (Detector)[...]

– 18 – Inverter and Main Board Pin Connectors Inverter Board (Electric Model) 4 1 1 3 Ground Main Board CN1 1 5 2 1 -Moisture Sensor 2 -Inlet Thermistor Triac 7 7 3 -Inlet/Outlet Thermistor 4 -Ground 5 -Inlet Thermistor 6 -Heating Coil 7 -Drum Motor Inverter Board (Gas Model) Blower Motor Fuse Fuse 4 1 1 3 5 2 Blower Motor Main Board CN1 1 6 7 [...]

– 19 – Main Board WARNING: THE CONNECTOR A T THE LCD BACKLIGHT IS OVER 800 VDC. USE APPROPRIA TE TYPE VOL TMETER OR DAMAGE COULD RESUL T . Note: The gas dryer main board differs from the electric dryer main board by the addition of a jumper plug on the model selector connector (the electric model has no jumper plug). Depending on how the pins h[...]

– 20 – Disconnect Ribbon Dryer Component s 2. Place a towel over the lid of the dryer to prevent scratches to the surface. Gently lift each corner of the backsplash; then roll it forward so it rests on top of the dryer . 3. Disconnect the wiring to the control board. Remove the backsplash. Backsplash The backsplash must be removed to access the[...]

– 21 – Inverter The inverter board is enclosed in a protective box mounted on the top panel under the backsplash. T o access and remove the inverter board: 1. Remove the Backsplash . 2. Remove the 2 Phillips head screws that hold the inverter box in place. 3. Slide the inverter box toward the rear of the dryer and lift out. 4. Lift the inverter[...]

– 22 – T esting the Inverter Fuse Signal ( Beeper ) The beeper is mounted on the inverter , but controlled by the main control board. • The beeper uses the same 12 VDC supply as the LCD backlight. • T o check the 12 VDC circuit, measure between pin 3 (white wire) on white connector CN1 1 and pin 8 (pink wire) on the blue connector CN14. (Se[...]

– 23 – T op Cover The top cover is held in place by 2 Phillips head screws, located on the back of the washer , and two front tabs. T o remove the top cover: 1. Remove the Backsplash . 2. Remove the 2 screws that hold the Inverter box in place. 3. Place the inverter box off to the side of the dryer . 4. Slide the wiring harness guard out. Disco[...]

– 24 – 4. Remove the 4 screws that hold the front drum support to the sides of the dryer . Drum WARNING: Sharp edges may be exposed. Wear Kevlar gloves or equivalent protection. The dryer drum is made of 304 stainless steel and has three replaceable drum baffles attached to the inside. The drum rotates clockwise at 47 to 50 rpm. T o remove the [...]

– 25 – Door Switch The door switch is fastened to the front panel by two locking tabs and is common to all dryer functions. • When the dryer door is closed, the switch will complete the motor circuit, allowing dryer operation. • Immediately upon detection of a door opening, the drum motor and blower motor shut off and all heat is disabled. [...]

– 26 – T o install the drive belt: 1. Place the belt in position around the front of the drum. 2. Reach under the left side of the drum and place the belt in position around the motor pulley . Push the idler pulley to the left and place the belt onto the idler pulley . 3. Release the idler pulley and guide the belt into position. 4. Install the[...]

– 27 – Blower Motor The blower motor is a DC, variable speed motor capable of operating at different speeds in response to changing air temperature and venting impedances. Below 1000 rpm, the dryer control turns the heater off. Resistance of the motor windings can be measured at the 10-pin connector on the inverter board or at the motor . (See [...]

– 28 – 6. Remove the 13 mm center nut. (T urn clockwise to remove.) Remove the blower wheel. 1 1. Remove the spring straps. Remove the drive motor from the motor bracket. Note: The motor bracket is notched, be sure to align the motor correctly in the bracket when installing. Note: The motor shaft has a snap ring, which prevents the blower wheel[...]

– 29 – Heater Assembly ( Electric Models ) The electric dryer has two heating elements. One is fixed at 3000 watts and cycles on and off. The other is variable, controlled by a T riac that varies the wattage from 0 to 3000 watts. • The total wattage of the dryer will vary from 3000 to 6000 watts. • The open end in the back of the housing al[...]

– 30 – • The inlet thermistor measures the incoming air temperature and responds to temperature changes. • The inlet thermistor provides temperature change information to the electronic control board. • The electronic control board makes heating and blower decisions based on this information. • At room temperature the inlet thermistor h[...]

– 31 – Outlet Thermistor The outlet thermistor is located on the blower housing on both the gas and electric models. Outlet Thermostat The outlet thermostat is located on the blower housing on both the gas and electric models (see photos.) • The outlet thermostat monitors outgoing air temperature. • If the outlet thermostat reaches a temper[...]

– 32 – Gas V alve The gas valve assembly is located in the bottom, right, front corner of the dryer cabinet. T o remove the hi-limit thermostat: 1. Remove the T op Cover , the Front Panel , and the Drum . 2. Disconnect the lead wires to the hi-limit thermostat. 3. Remove the 2 screws that hold the hi-limit thermostat to the housing. Remove the [...]

– 33 – 6. Slide the gas valve assembly out through the front of the dryer cavity . 7. Remove the 3 Phillips head screws that secure the gas valve to the mounting assembly . Remove the gas valve. Ignitor The ignitor is located at the end of the gas valve assembly in the combustion chamber opening. Resistance across the ignitor is approximately 3[...]

– 34 – Note : Proper leveling of the dryer is vital for accurate sensor drying. Excessive rearward adjustment will cause clothes to tumble toward the rear of the drum, preventing contact with the senor rods, thus producing a false dryness reading. T esting the Moisture Sensor Circuit 1. Place the dryer in Factory T est Mode: a. Press HOME, then[...]

– 35 – Field Service Mode TROUBLE SHOOTER MACHINE PREFERENCES HOME SCREEN HELP BY F ABRIC BY GARMENT TOUCH T O SELECT Sensor DR Y CYCLE SPECIAL CYCLES TIMED DRY Overview The dryer control has a field service mode that can be accessed by the service technician in order to give critical information on the status of various components of the dryer[...]

– 36 – Factory T est Mode The factory test mode allows the service technician to view critical tests on dryer components. The tests are automatic and start as soon as the test screen is displayed. • If an error is detected, NG appears on the LCD screen. • If no errors are detected, OK appears on the LCD screen. 1. Press the POWER pad to tur[...]

– 37 – 2. Press the HELP pad. The main help screen is displayed. 3. Press and hold the HELP and ST ART/ST OP pads simultaneously for 3 seconds. One of the following screens will be displayed. MA CHINE PREFERENCES HOME SCREEN HELP TROUBLESHOO TER CONTRAST 180 DOOR : BLO WER : HEA TING : INLET THD : OUTLET THD : MOISTURE(S): INPUT(V): MEMOR Y : C[...]

– 38 – Control Quick Reference Chart User Interface Mode Help Mode Help Options Screen Help Button (from Home Screen) Back Button Home Screen Help Button Help Button (other than Home Screen) Home, Back, My Cycles, or Help Buttons Demo Mode Dry Cycle Mode T est Mode F actory T est Mode T roubleshooting Mode Field Service Mode Standby Mode Setup [...]

– 39 – T roubleshooting V ertical lines on the LCD display when the dryer is turned on. Re-seat LCD ribbon cable at connector CN6 on the main board. If necessary , a piece of scotch tape may be added to the back of the ribbon. This additional thickness will provide better contact for the ribbon terminals. LCD screen too dark or too light as com[...]

– 40 – PROBLEM POTENTIAL CAUSE DIAGNOSTIC PROCEDURE ACTION Long Dry Time Dryer Heating Restricted ducting Check blower speed in Factory Test Mode with no clothes load. If blower speed is higher an 2700 rpm - ducting is abnormally restricted and will cause longer dry times Check for kinked transition duct. Inform owner of clogged ducting. Lint f[...]

– 41 – PROBLEM POTENTIAL CAUSE DIAGNOSTIC PROCEDURE ACTION Heater error (Gas) Check service mode for heater error. If heater error is displayed, proceed with diagnostic procedures in the order below. Low line voltage Line voltage must be greater than 96V. Software will not allow gas valves to operate below 96VAC. Inform owner of low line voltag[...]

– 42 – PROBLEM POTENTIAL CAUSE DIAGNOSTIC PROCEDURE ACTION Dryer stopped prematurely (clothes wet) Clogged/restricted ducting. Check Service Mode for blower errors. Unit will stop if blower exceeds 3000 rpm for 1 minute. Check for kinked transition duct or clogged ducting. Inform owner of clogged ducting. Blower motor less than 1000 rpm In Fact[...]

– 43 – PROBLEM ERROR DISPLAYED FOR CUSTOMER ERROR DISPLAYED IN SERVICE MODE POSSIBLE CAUSE(S) POSSIBLE REPAIR REQUIRED Flash ROM EEPROM No error displayed. Dryer will continue to operate normally unless checksum errors are found on parameters critical to safe operation of the unit. Standard problem screen will be displayed if unsafe condition e[...]

– 44 – PROBLEM ERROR DISPLAYED FOR CUSTOMER ERROR DISPLAYED IN SERVICE MODE POSSIBLE CAUSE(S) POSSIBLE REPAIR REQUIRED Keypanel Membrane No error displayed. Unit will continue to operate normally. Screen will display "There is a problem with the membrane. Please check and replace if necessary" Control sensed a keypanel membrane pad pr[...]

– 45 – PROBLEM ERROR DISPLAYED FOR CUSTOMER ERROR DISPLAYED IN SERVICE MODE POSSIBLE CAUSE(S) POSSIBLE REPAIR REQUIRED Blower not speeding up No error displayed. Dryer will operate using Air Dry for all cycles. Screen will display "The blower is not getting up to speed. Please check the blower motor and inverter and replace if necessary&qu[...]

– 46 – Electric Model WARNING: Disconnect electrical power before servicing. Caution : Label all wires prior to disconnection. Wiring errors can cause improper and dangerous operation. V erify operation after servicing. Schematics[...]

– 47 – Gas Model WARNING: Disconnect electrical power before servicing. Caution : Label all wires prior to disconnection. Wiring errors can cause improper and dangerous operation. V erify operation after servicing.[...]

– 48 – P ARTS Electric Model[...]

– 49 – Electric Model[...]

– 50 – Electric Model[...]

– 51 – Electric Model VIE W NUM BE R CA TA LOG NU M B E R DE S CR I P TI ON QU AN TI TY 1 49- 90152 MA NUA L U S E & CA RE 1 1 31- 15541 MIN I M A NU A L 1 10 W H46X 10098 CONT RO L P A NE L A S M W H-LH 1 10 W E 19X 1 0072 CONT RO L P A NE L A S M W H-RH 1 20 W E 04X 1 0105 DI S P LA Y A S M - P W R/ LCD 1 29 W E 01X 10176 CO V E R, S A FE[...]

– 52 – VIE W NUM BER CAT AL OG NUM BE R DES CRI P T I O N Q UAN T I T Y 276 W E 21X 10015 D RU M A S M 1 277 W E 09X 10015 SE A L 1 278 W E 14X 10056 LI FT E R 3 280 W E 12X 10011 BE LT 1 310 W E 14X 10057 D RU M FRONT 1 311 W E 01X 10191 C OV E R 1 312 W E 04X 10112 SOCK E T 1 313 W E 01X 10192 COV E R - LAM P 1 314 W E 01X 10193 GAS K E T 1 3[...]

– 53 – Gas Model[...]

– 54 – Gas Model[...]

– 55 – Gas Model[...]

– 56 – Gas Model VIE W NUM BER CATA L O G NUM BER DES C RI P T I ON QUANT I T Y 1 49- 90152 MA NUA L USE & C A RE 1 1 31- 15541 MIN I M A NU A L 1 10 W H46X 10098 CON T ROL P A N E L A S M W H-LH 1 10 W E 19X 10072 CONT ROL P A N E L A SM W H-RH 1 2 0 W E0 4X 1 01 05 D I SPL AY ASM - PW R /L C D 1 25 W E 04X 10 10 6 CO NNE CTOR A S M L NG P[...]

– 57 – VIE W NUM BER CATA L O G NUM BER DES C RI P T I O N QUANT I T Y 311 W E 01X 10191 COV E R 1 312 W E 04X 10112 S OCK E T 1 313 W E 01X 10192 COV E R - LA M P 1 3 1 4 W E0 1X 1 01 93 G ASKET 1 321 W E 08X 10062 CON NECT OR A S SE M B LY 1 33 0 W E 14X 1 005 8 DUCT ASSEMBL Y 1 340 W E 18X 10008 LI NT F ILT E R A S M 1 350 W E 18X 10009 GUI [...]

– 58 – Overview When viewed from the front, the dryer is shipped so the door opens from the left . Due to utility configurations or customer preferences, the door can be set up to open from the right by reversing the door swing. T o reverse the door swing: 1. Open the dryer door and remove the filler plugs opposite the hinges. 3. With the door [...]

– 59 – 10 . Remove the hinges from the door and install them on the opposite side with the hinge pin toward the outside of the door . 1 1. Insert the door on the opposite side of the opening by moving the door IN and DOWN until the top hinge and the bottom hinge are resting on the top screws. 12 . Remove the remaining screws from the side of th[...]

– 60 – Overview When viewed from the front, the washer is shipped for installation on the left and the dryer is shipped for installation on the right. If the hose utility connections are arranged so that the units must be installed with the washer on the right and the dryer on the left, the backsplashes of the washer and dryer can be switched i[...]

– 61 – 6. Remove the four screws holding the washer control board to the backsplash; then remove the control board and set it aside. 10 . Remove the four screws holding the dryer control board to the backsplash. 1 1. Remove the dryer control board and set it aside. 7. Place a towel over the top surface of the dryer to prevent scratches to the s[...]

– 62 – 12 . Place the backsplash from the dryer on top of the washer and place the backsplash from the washer on top of the dryer . 13 . Attach the dryer control board to the new backsplash by replacing the four screws removed from the dryer control board earlier . 14 . Connect the dryer control board to the new backsplash by sliding the ribbon[...]

– 63 – 18 . Attach the washer control board to the new backsplash by replacing the four screws removed from the washer control board earlier . 23 . Secure the new backsplash to the washer using the 2 screws removed earlier . 22 . Insert the tabs on the bottom front of the new backsplash into the slots on the washer and rotate the backsplash int[...]