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Instruction Sheet TECH SHEET - DO NOT DISCARD PAGE 1 IMPORTANT Electrostatic Discharge (ESD) Sensitive Electronics Electrical Shock Hazard Disconnect power before servicing. ESD problems are present everywhere. ESD may damage or weaken the machine control electronics. The new control assembly may appear to work well after repair Replace all parts and panels before is finished, but failure may occur at a later date due to ESD stress. operating. ■ Use an anti-static wrist strap. Connect wrist strap to green ground Failure to do so can result in death connection point or unpainted metal in the appliance or electrical shock. -OR- Touch your finger repeatedly to a green ground connection point or unpainted metal in the appliance. DIAGNOSTIC GUIDE ■ Before removing the part from its package, touch the anti-static bag to a green ground connection point or unpainted metal in the appliance. Before servicing, check the following: ■ Avoid touching electronic parts or terminal contacts; handle machine control ■ Is the power cord firmly plugged into a live electronics by edges only. circuit with proper voltage? ■ When repackaging failed machine control electronics in anti-static bag, ■ Has a household fuse blown or circuit observe above instructions. breaker tripped? Time delay fuse? ■ Is dryer vent properly installed and clear of lint or obstructions? ■ All tests/checks should be made with a VOMorDVM having a sensitivity of 20,000 ohms per volt DC or greater. 3. All indicators on the console are removing these components to view the illuminated with “88” showing in the part numbers and compare them to the part ■ Check all connections before replacing “Estimated Time Remaining” (two-digit) numbers in the Components Table on page components. Look for broken or loose display, if this test mode has been 2. See Accessing & Removing the wires, failed terminals, or wires not entered successfully. Electronic Assemblies, page 7. Replace pressed into connectors far enough. If unsuccessful entry into diagnostic components if necessary. ■ The most common cause for control mode, actions can be taken for specific Diagnostic: Console switches and failure is corrosion on connectors. indications: indicators Therefore, disconnecting and reconnecting wires will be necessary Indication 1: None of the indicators Pressing each button or turning the cycle throughout test procedures. or display turns on. selector to each cycle should cause a beep tone and control one or more LEDs as shown ■ Connectors: Look at top of connector. Action: Select any Manual Cycle. If indica- in figure 1, Console Diagnostics on page 3. Check for broken or loose wires. Check for tors come on, then try to change the dryer Pressing the Start button will also control the wires not pressed into connector far time by pressing the More Time and Less motor and heater, while the two-digit display enough to engage metal barbs. Time buttons. If either button fails to change will indicate “02”. the time, something is faulty with one of ■ Resistance checks must be made with those buttons, and it is not possible to enter power cord unplugged from outlet. Diagnostic: Moisture Sensor the diagnostic mode.Remove the console electronics and housing. See Locate two metal strips on the face of the lint screen housing. Bridge these strips with a wet DIAGNOSTIC TESTS Accessing & Removing the Electronic Assemblies, page 7. cloth or a finger. If a beep is heard and “03” is displayed on the console, the sensor is OK. If These tests allow factory or service personnel If no indicators come on after pressing the not, or if a beep tone is heard before bridging to test and verify all inputs to the machine Manual Cycle buttons, go to Trouble- the moisture strips, go to Test #4, step 2. control electronics. One may want to do a quick shooting Test #1 (120 VAC Supply and overall checkup of the dryer with these Connection). Diagnostic: Door Switch tests before going to specific troubleshooting Opening the door should cause a beep tone tests. Indication 2: E1 or E2 flashes from the display. and a number and letter to be indicated in the two-digit display. Closing the door firmly should ACTIVATING THE DIAGNOSTIC Action: Proceed to Troubleshooting Test #3a TEST MODE cause a beep tone and the display to go blank (Thermistor Test). or indicate “88”. 1. Be sure the dryer is in Standby Mode Indication 3: E3 flashes from the (plugged in and all indicators off). display. 2. Press the following button sequence: Action: Check that the correct machine More Time ➔ Less Time ➔ More Time ➔ control electronics and Console Electronics Less Time - all within 5 seconds. and Housing are installed. Do so by DISPLAY FAULT/ERROR CODES The error codes below would be indicated when attempting to start a drying cycle, or after activating the Diagnostic Test Mode. DISPLAY DESCRIPTION EXPLANATION AND RECOMMENDED PROCEDURE “PF” flashes to indicate that a power failure occurred while the PF POWER FAILURE dryer was running. Press Start to continue the cycle, or press Pause/Cancel to clear the display. E1 THERMISTOR OPEN “E1” flashes if the thermistor is open. See TEST #3a. E2 THERMISTOR SHORTED “E2” flashes if the thermistor has shorted. See TEST #3a. FOR SERVICE TECHNICIAN'S USE ONLY PART NO. 3979300 REV. A PAGE 2 TECH SHEET - DO NOT DISCARD ELECTRIC DRYER WIRING DIAGRAM IMPORTANT: Electrostatic (static electricity) discharge may cause damage to machine control electronics. See page 1 for details. L1 LINE - BLACK RED - LINE L2 240 VOLTS WHITE - NEUTRAL N 120 VOLTS NEUTRAL BLACK DL BROWN TERMINAL LINKED TO D2 CABINET DRUM LAMP D1 WHITE P1-3 BLUE BLUE D G DOOR DOOR BK P1-5 L1 WHITE SWITCH NEUTRAL P1-2 NEUTRAL P3 P1-4 LT. B L U E BLUE WHITE USER INTERFACE MOTOR THERMAL FUSE (ACTIVE OVERLAY or GRN/YEL 91° C (196° F) P1-1 WHITE 5M 2M ALTERNATE TECHNOLOGY) CENTRIFUGAL SWITCH P4 MAIN 4M P2-1 2.4-3.6 MOIST. YEL/RED BELT START 2.4-3.8 SENSOR G SWITCH 3M 6M 1M MOIST RTN P2-2 BLK DRIVE MOTOR SENSOR 1/3 H.P. MODEL P2-3 HEATER MOVS RELAY MODEL RTN P2-4 N.O. HEATER +V THERMISTOR (0.250 TERMINAL) TEMP. P2-5 RED/WHT COM HEATER RTN BLK 10K ± 3% (0.250 TERMINAL) TEMP RTN P2-6 N.C. P2-7 ELECTRONIC CONTROL NC RED BLACK RED/WHITE RED HIGH LIMIT THERMAL CUT-OFF THERMOSTAT HEATER Blue White Green/ (TCO) 178° C (352° F) 146° C (295° F) 7.8-11.8 Yellow Contacts Drum Size: Drum Speed: Red Red Function 1M 2M 3M 5M 6M 7.0 cubic feet 51.5 ± 3 RPM CW Start Run = Contacts closed TROUBLESHOOTING GUIDE Pluggable Drive Centrifugal Switch (Motor) Some tests will require accessing components. See figure 13, page 7 for Motor Switch component locations. PROBLEM POSSIBLE CAUSE / TEST COMPONENT PART NUMBER NOTE: Possible Cause/Tests MUST be performed in the sequence shown for each problem. Console Electronics and Housing for White/Platinum Model: GEW9200LW 8519389 WON’T POWER UP. 1. 120V electrical supply. See TEST #1. for White/Blue Model: GEW9200LQ 8519390 (No response when “Control 2. Check harness connections. On” button is pressed.) 3. Control Electronics and housing. See TEST #5. for Bis/Bis Dark Model: GEW9200LT 3979790 1. If number display flashes, check to be sure the Machine Control Electronics 3978918 WON’T START CYCLE door is completely shut, and press and hold down Main Wire Harness 8299926 WHEN START BUTTON IS Start for about 1 second. PRESSED. Digital Wire Harness 8299925 2. See TEST #2. 3. See TEST #6. Wire Harness, Moisture Sensor 3406653 1. Check Pause/Cancel button. See TEST #5. Door Switch 8519323 WON’T SHUT OFF WHEN EXPECTED. 2. Control Electronics and housing. See TEST #5. Wire and Door Switch Assembly 8283288 3. Moisture Sensor. See TEST #4. Belt Switch 3394881 CONTROL WON’T ACCEPT Console electronics and housing. See TEST #5. Thermal Cut-Off 8318314 SELECTIONS. Thermal Fuse 3390719 1. Heater. See TEST #3. Heat Element Assembly 8527865 WON’T HEAT. 2. Check harness connections. 3. Check installation. High Limit Thermostat 3391914 Drive Motor 3395654 HEATS IN AIR CYCLE. Thermistor. See TEST #3a. Thermistor - NTC 10K Ohms 3976615 SHUTS OFF BEFORE CLOTHES ARE DRY. Moisture Sensor. See TEST #4. PART NO. 3979300 REV. A FOR SERVICE TECHNICIAN'S USE ONLY TECH SHEET - DO NOT DISCARD PAGE 3 Controls Status LEDs, and turns on dryer This button controls the left digit Start button This button controls controls the right digit these LEDs Control On button controls this LED Cycle selector Button controls LED Tur ns off all LEDs controls where pointing all LEDs and exits Button Button Button above button diagnostic mode controls controls controls LED above all LEDs all LEDs button above button above button Figure 1. Console Diagnostics ➔ If there is no continuity, replace the – Belt/belt switch TROUBLESHOOTING TESTS power cord and test the dryer. – Motor ➔ If there is continuity, go to step 2. – Door switch TEST #1 120 VAC Supply – Machine control electronics. See ESD Connection 2. In a similar way, check which terminal of the plug is connected to the left-most contact on information, page 1. This test assumes that proper voltage is the terminal block and make a note of it. 1. Unplug the dryer. Access the machine present at the outlet, and visual inspection This will be L1 (black wire) in the wiring control electronics and measure the indicates that the power cord is securely diagram. See figure 3. resistance across P1-3 and P1-4. See fastened to the terminal block. ➔ When this is found, go to step 3. Accessing & Removing the Electronic NOTE: These checks are done with the dryer ➔ If neither of the plug terminals have Assemblies, page 7.
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