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Display Fault/Error Codes Pf E1 E2 Diagnostic Guide

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Display Fault/Error Codes Pf E1 E2 Diagnostic Guide TECH SHEET - DO NOT DISCARD PAGE 1 IMPORTANT Electrical Shock Hazard Electrostatic Discharge (ESD) Sensitive Electronics 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 Replace all parts and panels before repair 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 electronics by edges only. live 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? If unsuccessful entry into diagnostic them to the part numbers in the ■ All tests/checks should be made with a mode, actions can be taken for Components Table on page 2. See VOMorDVM having a sensitivity of specific indications: Accessing & Removing the Electronic 20,000 ohms per volt DC or greater. Assemblies, page 10. Replace Indication 1: None of the indicators or ■ components if necessary. Check all connections before replacing display turns on. components. Look for broken or loose Diagnostic: Console switches and wires, failed terminals, or wires not Action: Select any Manual Cycle. indicators pressed into connectors far enough. If indicators come on, then try to change the dryer time by pressing the More Time Pressing each button should cause a beep ■ The most common cause for control and Less Time buttons. If either button tone and control one or more LEDs as failure is corrosion on connectors. fails to change the time, something is shown in figure 1, Console Diagnostics, Therefore, disconnecting and faulty with one of those buttons, and it is page 2. Pressing the Start button will also reconnecting wires will be necessary not possible to enter the diagnostic mode. control the motor and heater, while the throughout test procedures. Remove the console electronics and two-digit display will indicate “01”. ■ Connectors: Look at top of connector. housing. See Accessing & Removing the Diagnostic: Moisture Sensor Check for broken or loose wires. Check Electronic Assemblies, page 10. Locate two metal strips on the face of the for wires not pressed into connector far If no indicators come on after pressing enough to engage metal barbs. lint screen housing. Bridge these strips with the Manual Cycle buttons, go to awet cloth or a finger. If a beep is heard ■ Resistance checks must be made with TEST #1 (Supply Connections), page 4. and “03” is displayed on the console, the power cord unplugged from outlet. sensor is OK. If not, or if a beep tone is Indication 2: E1 or E2 flashes from heard before bridging the moisture strips, the display. go to TEST #4, step 2, page 7. DIAGNOSTIC TESTS Action: Proceed to TEST #3a (Thermistor Diagnostic: Door Switch These tests allow factory or service Test), page 6. Opening the door should cause a beep tone personnel to test and verify all inputs to the Indication 3: E3 flashes from the and a number and letter to be indicated in machine control electronics. One may want display. to do a quick and overall checkup of the the two-digit display. Closing the door firmly dryer with these tests before going to Action: Check that the correct machine should cause a beep tone and the display to specific troubleshooting tests. control electronics and Console go blank or indicate “88”. Electronics and Housing are installed. ACTIVATING THE DIAGNOSTIC Do so by removing these components to TEST MODE view the part numbers and compare 1. Be sure the dryer is in Standby Mode (plugged in and all indicators off). DISPLAY FAULT/ERROR CODES 2. Press the following button sequence: The error codes below would be indicated when attempting to start a drying cycle, or after MORE TIME ➔ LESS TIME ➔ activating the Diagnostic Test Mode. MORE TIME ➔ LESS TIME - all within 5 seconds. DISPLAY DESCRIPTION EXPLANATION AND RECOMMENDED PROCEDURE 3. All indicators on the console are “PF” flashes to indicate that a power failure occurred while the dryer illuminated with “88” showing in the PF POWER FAILURE was running. Press START to continue the cycle, or press “ESTIMATED TIME REMAINING” PAUSE/CANCEL to clear the display. (two-digit) display, if this test mode has been entered successfully. E1 THERMISTOR OPEN “E1” flashes if the thermistor is open. See TEST #3a, page 6. E2 THERMISTOR SHORTED “E2” flashes if the thermistor has shorted. See TEST #3a, page 6. FOR SERVICE TECHNICIAN'S USE ONLY PART NO. 3980060 PAGE 2 TECH SHEET - DO NOT DISCARD Each cycle select button controls only its own LED This button controls the left digit Start button This button controls controls the right digit Status LEDs Start button turns on Dryer Button (and controls controls Status LEDs) all LEDs above button Tur ns off all LEDs Each button Button Button and exits controls only controls controls diagnostic mode its own LED all LEDs all LEDs above button above button Figure 1. Console Diagnostics Drum Size: Drum Speed: 7.0 cubic feet 51.5 ± 3 RPM CW PART NUMBER ELECTRIC DRYER GAS DRYER COMPONENT Electric Gas Dryers Dryers Console Electronics and Housing Contacts Contacts for White/Graphite Models: 82822 8529879 — 84832 85298791 — Function 1M 2M 3M 5M 6M Function 3M 5M 6M 92822 — 8529879 Start Start 94832 — 85298791 for Bisque/Graphite Models: 82824 8529880 — Run Run 84834 85298801 — = Contacts closed = Contacts closed 92824 — 8529880 1 94834 — 8529880 Centrifugal Switch (Motor) Centrifugal Switch (Motor) for Graphite/Black Models: 82826 8529881 — 84836 85298811 — 92826 — 8529881 1 Blue White Blue White 94836 — 8529881 Green/ Black Green/ Machine Control Electronics 3980062 3980062 Yellow Yellow Main Wire Harness 8299926 8299927 Red Red Digital Wire Harness 8299925 8299929 Wire Harness, Moisture Sensor 3406653 3406653 Wire Harness, Gas Valve — 3401850 Door Switch 8519323 8519323 Pluggable Drive Pluggable Drive Wire and Door Switch Assembly 8283288 8283288 Motor Switch Motor Switch Belt Switch 3394881 3394881 Thermal Cut-Off 8318314 — Thermal Fuse 3390719 3390719 Heat Element Assembly 8527865 — Gas Burner Assembly — 8318276 High Limit Thermostat 3391914 3403140 Drive Motor 3395654 3395654 BLACK Thermistor - NTC 10k Ohms 3976615 3976615 WHITE BLUE 1 Add Model Selector p/n 8519455. Insert Model Selector into rear WHITEWHITE BLUE of the console electronics. Gas Valve PART NO. 3980060 FOR SERVICE TECHNICIAN'S USE ONLY TECH SHEET - DO NOT DISCARD PAGE 3 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 NC LINKED TO CABINET DRUM LAMP COM WHITE P1-3 BLUE BLUE G DOOR DOOR BK P1-5 NO L1 WHITE SWITCH NEUTRAL P1-2 NEUTRAL P3 P1-4 BLUE BLUE WHITE USER INTERFACE MOTOR THERMAL FUSE (ACTIVE OVERLAY or GRN/YEL 196° F (91° C) P1-1 WHITE 5M 2M ALTERNATE TECHNOLOGY) CENTRIFUGAL SWITCH P4 MAIN 4M P2-1 2.4 - 3.6 MOIST. START YEL/RED BELT 2.4 - 3.8 G SWITCH SENSOR 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 (TCO) 352° F (178° C) 250° F (121° C) 7.8-11.8 GAS DRYER WIRING DIAGRAM L1 LINE - BLACK WHITE - NEUTRAL N DRUM LAMP 120 VOLTS BLACK DL BROWN NC COM WHITE P1-3 BLUE BLUE DOOR DOOR BK P1-5 NO L1 P1-2 NEUTRAL SWITCH NEUTRAL WHITE P3 USER INTERFACE MOTOR P1-4 BLUE GRN/YEL WHITE (ACTIVE OVERLAY or P1-1 ALTERNATE TECHNOLOGY) P4 MOIST. P2-1 YEL/RED G SENSOR 5M P2-2 MOIST RTN MAIN CENTRIFUGAL BLK SENSOR 4M 2.4 - 3.6 SWITCH MODEL P2-3 MOVS START HEATER BELT 2.4 - 3.8 P2-4 BLK SWITCH RELAY MODEL RTN 3M N.O. THERMISTOR 6M HEATER +V P2-5 RED/WHT (0.250 TERMINAL) TEMP. DRIVE MOTOR BLK 1V IG IGR COM IGNITOR HEATER RTN P2-6 BLK 10k ± 3% (0.250 TERMINAL) TEMP RTN VALVE 50-500 MOV 2 1 3 VALVE N.C. P2-7 ELECTRONIC HOLD ASSIST NO. 1 4 5 CONTROL NC BLUE VALVE TF2 RED TF1 RED 3V MAIN NO. 2 HS1 HIGH LIMIT HS2 FS1 FS2 THERMAL FUSE FLAME THERMOSTAT SENSOR 196°F (91°C) 205°F (96°C) 22,000 BTU/HR FOR SERVICE TECHNICIAN'S USE ONLY PART NO. 3980060 PAGE 4 TECH SHEET - DO NOT DISCARD TROUBLESHOOTING GUIDE GAS DRYER 1. After removing the cover plate, check Some tests will require accessing components. See figure 14, page 9, for component locations. that the power cord is firmly connected to PROBLEM POSSIBLE CAUSE / TEST the dryer's wire harness. See figure 4. NOTE: Possible Cause/Tests MUST be performed in the sequence shown for each problem.
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