User manual SAMSUNG DV5471AEP TROUBLE SHOOTING GUIDE

[. . . ] Check for : - PCB with Eeprom circuit. 2E AE Et 2 ALIGNMENT AND ADJUSTMENTS WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before servicing, unless testing requires power. TEST MODE Continuous Run Mode: 1. PressWrinklePrevent+DryLevelfor7secduringPowerOnState(NormalUserMode). OnceinContinuousRunMode, display"CC"for1secandthenumberofCyclefor1secand the remaining time for 1 sec in turns. ThepreviouscyclewillrestartduringContinuousRunModeuntilthemodeisdeactivated. [. . . ] 1) As some electronic components are damaged by the charged static electricity from the resin part of dryer or the human body, prepare the human body earth or remove the potential differenceofthehumanbodyanddryerbycontactingthepowersupplyplugwhenthework contacting to PCB is executed. 2) As the P. C. B assembly is designed for no trouble, do not replace the P. C. B assembly by the wrong diagnosis and follow the procedure of the trouble diagnosis when the micom is not operated normally. 5 TROUBLE SHOOTING WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before servicing, unless testing requires power. No Problem What To Do · · · · 1 Will Not Start or Run · · · · · · · · · · · · · · 5 Blows fuses or trips circuit breaker (Gas Model) All wires are hooked up to their corresponding terminals. Doorswitchfunctional. . . doorclosed. Checkforerrorcode3(See Tableforcodedefinition). Start/Pauserotaryselectordialfunctional. BeltofforbrokenandBeltCut-offSwitchoperates. Check motor winding resistance: 2. 88ohms between pin #3 and 4, 3. 5ohms between pin #4 and 5. Idler tension spring too weak or stretched. Blower impeller blocked in blower housing. Drive motor - start switch contacts stuck closed. (Rotorwinding, statorwinding, generator) Is the motor protector normal?If above points are not found, the PCB assembly is out of order. DuringignitionthedryerwilldrawXamps. WiththeburnerON, the dryer will draw X amps. If the dryer is drawing amperages above this, then the house wiring, fuse box or circuit breaker is suspected to be at fault. Igniter harness loose and shorted to base. Incorrect wiring or wire shorted to ground. Drive motor winding shorting to ground. 2 Motor runs/ tumbler will not turn Runs a few minutes and then stops 3 4 Blows fuses or trips circuit breaker · · · 6 Will not heat (motor runs) Openheatingelement. · Hi-Limit trips easily or is open. · Regulatingthermostattripseasilyorisopen. When the dryer is operated on a heat setting, the igniter should be energizedandburnershallfirewithin45secondsat120VAC. The failure of a component in this system will usually be indicated by one of three symptoms: 6 7 Will Not Dry Gas Model Poor Gas Ignition TROUBLE SHOOTING WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before servicing, unless testing requires power. No Problem What To Do If the igniter does not heat up, remove power and using an ohmmeter, check the following: · Openflamesensor The igniter does not · Openigniter 8 glow · Shorted booster coil · Openwiring · Badmotorswitch(Neutralsupply) · Nopowerfromcontrol(L1supply) If the igniter heats up but the main burner flame is not ignited, remove power and using an ohmmeter, check the following: Igniter glows - No gas · Opensecondarycoil 9 ignition · Openholdingcoil · Openwireharness · Stuckflamesensor(Stuckclosed) If a normal ignition takes place and after a short while the flame goes out, check for the following: · Radiantsensorcontactsopeningprematurely. The gas is ignited but 10 · Weak gas valve coil may open when stressed by higher Temps. the flame goes out · Weak Hi-Limit · Poor venting · Bad drum seals · Lint filter is not clean. [. . . ] 7 TROUBLE SHOOTING WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before servicing, unless testing requires power. COMPONENT TESTING PROCEDURES Component Electrical Testing (with ohmmeter) Thermistorresistance10K@25°C77°F Thermostat 1 resistance < 1 BeltCut-offS/W -Leveropen:Resistancevalue<1 -Leverpush:Resistancevalue: Thermostat 3 resistance < 1 - If resistance is infinity, replace thermostat 3. Thermostat 2 resistance < 1 - If resistance is infinity, replace thermostat 2. Heater resistance 10 - If resistance is infinity, replace Heater. Lampresistance80~100(Blue&White) Motor(Electronic&GAS) Contacts Function Start Run 1M 2M 3M 5M 6M 1) 2) Measure resistance of the following terminal Door switch : open Terminal : "COM" - "NC" (1-3) : <1 Terminal : "COM" - "NO" (1-2) : Doorswitchpush:On Terminal : "COM" - "NC" (1-3) : Terminal : "COM" - "NO" (1-2) < 1 = Contact closed Centrifugal Switch (Motor) 2. 88 between Pin# 3 and 4 3. 5 between Pin# 4 and 5 8 TROUBLE SHOOTING WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before servicing, unless testing requires power. GAS MODEL Radiant Sensor(10RS) Resistancevalue<1 Ifresistanceisinfinite, replaceRadiantsensor Gas Valve(25M01A) Valve1-2:Resistancevalue1. 2K Valve1-3:Resistancevalue0. 5K Valve4-5:Resistancevalue1. 2K If resistance is infinity, replace Valve Igniter(101D) Resistancevalue40~400 If resistance is infinite, replace Igniter Thermostat (60T21 Hi-Limit)230F-50F Resistancevalue<1 If resistance is infinity, replace Thermostat 9 TROUBLE SHOOTING WARNING To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before servicing, unless testing requires power. Steam Models Only 1. 3. CN1 AC Power Port Door Detection Sensor Motor Switch Sensor - RY5 MotorRelaySwitch - RY6 Heater Relay Switch Sensor Bars & temperature sensor check Sensor Bars - Disconnect harness and test Pink wirePin4toOrangewirePin5. [. . . ]