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American Dryer Corp WDA-385 service manual D. No Display Condition

Models: WDA-385

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D. No Display Condition

D. No Display Condition

1.Check power supply. (dryer voltage 110v, 208v, 220v ...)

2.Check for voltage across (L1) and (L2) of motor relay. (110v, 208v, 220v ...) For 3 phase machines, check across (L1) and (L3). If no voltage is evident, problem is bad wire(s) or termination from circuit breaker panel to top of motor contactor.

3.Check the .5 amp fuse(s) in the control box. If dryer is rated at 110v, 115v, or 120v there will only be one fuse. Voltages of 208v, 220v will have two (2) fuses. If blown, replace with P/N: 136057.

4.Check voltage across TB #8 and TB #6 (110v, 208v, 220v). If no voltage is evident, problem is bad wire or termination from TB #8 and TB #6 to the L1 and L2 connection on the motor relay.

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American Dryer Corp WDA-385 service manual D. No Display Condition

Contents

Service Manual ADG-385/WDA-3851996 thru 121396MFM/tfRetain This Manual In A Safe Place For Future Reference “IMPORTANT NOTE TO PURCHASER”VERIFY PROPER OPERATION AFTER SERVICING DRYERS SHOULD NEVER BE LEFT UNATTENDED WHILE IN OPERATIONCHILDREN SHOULD NOT BE ALLOWED TO PLAY ON OR NEAR THE DRYERS CHILDREN SHOULD BE SUPERVISED IF NEAR DRYERS IN OPERATIONFOR YOUR SAFETY Table of Contents MaintenanceInstallation Requirements Important InformationTrouble Shooting Technical InformationA. Safety Precautions SECTIONImportant Information Routine Maintenance A. CleaningSECTION B. Adjustments C. LubricationInstallation Requirements A. Enclosure, Air Supply, and Exhaust RequirementsSECTION C. Operational Service Check Procedure B. Electrical and Gas RequirementsPage Description of Parts A. Control PanelB. Control Box C. Coin Box and VaultD. Main Door Switch E. Lint CoopF. Tumbler I. Motor Assembly G. Tumbler Bearing and Pulley ArrangementH. Idler Bearing J. Temperature Sensors K. Sail SwitchL. Motor Contactor 1Ø Motor M. Non-Reversing Contactor 3Ø MotorN. Hi-Limit Thermostat To Replace Control Panel Assembly ServicingSECTION To Replace Computer To Replace Keypad refer to illustration aboveTo Remove Optic Switch To Replace Coin AcceptorTo Replace Microprocessor Temperature Sensor Probe To Replace Motor Contactor 2-Pole, 24VACNOTE DO NOT remove screws A. Burner Controls Gas To Replace Spark Ignitor To Replace Gas ValveTo Replace Main Burner Orifices See Chart On Following Page To Test and Adjust Gas Water Column PressureTo Replace Burner Tubes NEVER TEST FOR LEAKS WITH A FLAMEB. Thermostats and Temperature Sensor To Replace DSI ModuleTo Replace Hi-Limit Thermostat 330º To Remove The Temperature Sensor or High Heat Protector C. Sail Switch Assembly To Replace Sail SwitchTo Adjust Sail Switch To Replace Main Door Switch Steel DoorD. Front Panel and Main Door Assemblies TO REPLACE MAIN DOOR ASSEMBLY STEEL DOORTO INSTALL NEW MAIN DOOR GLASS To Replace Front Panel NOTE Identify location of each wire for correct reinstallationE. Tumbler and Bearing Assembly Remove backguard to access assembly To Replace Tumbler PulleyNOTE Check belt alignment before operating dryer To Replace Rear Tumbler Bearing IMPORTANT LOCTITE NOW BEING USEDNOTE Check alignment of pulleys before operating dryer To Replace The Front Tumbler Bearing F. Idler and Bearing Assembly To Replace Idler PulleyRemove backguard to access assembly NOTE Check tension and alignment of belts before operating dryerTo Replace Idler Bearing G. Drive PulleyH. Tumbler basket Tumbler Alignment vertical Tumbler Alignment lateralTo Replace The Tumbler and/or Tumbler Support NOTE Identify location of each wire for correct re-installationIMPORTANT LOCTITE NOW BEING USED LOCTITE ADHESIVE HAS BEEN USED TO SECURE SET SCREWS AND BEARINGSIN PLACE. ONCE SET SCREWS HAVE BEEN REMOVED, A GEAR PULLER MAY BE NECESV-Belt Tension Adjustment-Tumbler To Idler I. V-Belts refer to illustration in Sections I, J and KV-Belt Tension Alignment - Motor To Idler To Replace V-Belts J. Motor To Replace MotorK. Impeller L. Lintscreen To Replace LintscreenTrouble Shooting A. Phase 5 Coin System DiagnosticsDiagnostic L.E.D. Display Failure Codes SECTIONL.E.D. Display Indicators Microprocessor Controller Relay Output L.E.D. IndicatorsNOTE If the dryer is started the L.E.D. display indicator dots are on and there are no outputs heat and/or motor output L.E.D.s are off and the dOOr input L.E.D. is on, the fault is in the Phase 5 coin microprocessor controller computer itself. If the failure was elsewhere i.e., dryers door switch circuit the L.E.D. display would read dOOr if a keyboard entry was attempted. If the L.E.D. display indicators are on and the door L.E.D. input and motor/heat output L.E.D.s are on and the motor and/or heat is not active ON, then the problem is not the door switch circuit or the Phase 5 coin microprocessor controller the problem is else where in the dryer B. No Heat Condition Page C. No Start Condition D. No Display Condition Page E. dSFL Display Condition F. dOOr Display Condition Technical Information A. Data LabelSECTION B. Using A Manometer C. L.E.D. Display Codes D. Computer Logic and Wiring Diagram Diagrams for this book are as follows including ALL revisions of the number listed below B672611ADC450179 1- 01/08/98-502* 05/21/98-50