American Dryer Corp AD-170 service manual LED Display Indicators

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B. LED Display Indicators

The LED indicator dots located at the top portion of the LED display (as shown in the illustration below) indicate the Phase 5 OPL microprocessor controller output functions while a cycle is in progress. These indicator dots do not necessarily mean that the outputs are functioning. They are only indicating that the function (output) should be active (on).

1.Blower Motor Circuit Indicator - indicator dot is on whenever a cycle is in progress.

2.Heat Controller Indicator - indicator dot is on whenever the Phase 5 OPL microprocessor controller is calling for the heating circuit to be active (on).

3.Reversing Indicator - indicator dot is on when the drive basket (tumbler) motor is operating in the reverse mode (counterclockwise direction).

4.Reversing Indicator - indicator dot is on when the drive basket (tumbler) motor is operating in the forward mode (clockwise direction).

Phase 5 OPL Microprocessor Controller Relay Output LED Indicators

There are five (5) LED indicators (red lights) located at the lower backside area of the Phase 5 OPL microprocessor controller. They are identified/labeled (from left to right as shown in the illustration on this page) as "HEAT", "MTR" (blower motor), "FWD" (forward), "REV" (reversing), and "DOOR". These LEDs indicate that the outputs of the Phase 5 OPL microprocessor controller or, in the case of the door switch, are functioning.

1. "HEAT" Output LED Indicator -

If the dryer is started and there is no heat, yet the microprocessor controller display heat circuit indicator dot is on, but the heat output LED indicator is off, then the fault is in Phase 5 OPL microprocessor controller itself. If both display heat indicator dot and the heat output LED indicator are on, then the problem is elsewhere (i.e., external of the microprocessor controller).

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Contents AD-170 AD-170 Retain This Manual In a Safe Place For Future ReferencePage For Your Safety Table of Contents Sail Switch Assembly Important Information Safety PrecautionsCleaning Routine MaintenanceLubrication AdjustmentsEnclosure, Air Supply, and Exhaust Requirements Installation RequirementsElectrical and Gas Requirements Operational Service Check ProcedureDSI Module Gas Models Only Computer Panel AssemblyDescription of Parts Control BoxBlower Motor and Impellor 50Hz, 60Hz Steam & 50Hz Gas Gas Burner AssemblyDrive Motor Blower Motor and Impellor Hz Gas Models OnlyBasket Tumbler Idler AssemblyTumbler Bearing and Pulley Arrangement Hi-Limit Gas Models Only Main Door SwitchSail Switch Gas Models only Steam Damper System Automatic Reset ThermostatLint Drawer Switch Lint DrawerIntroduction ServicingComputer Controls To Replace Computer To Replace Keyboard Label AssemblyTo Replace Microprocessor Temperature Sensor Probe Page To Replace Main Burner Orifices To Replace Gas Valve see burner illustration onTo Test and Adjust Gas Water Column Pressure To Convert from Natural Gas to L.P. Gas To Replace Burner Tubes To Replace DSI Module Sail Switch Assembly Gas Models Only To Adjust Sail Switch To Replace Sail SwitchTo Install New Main Door Glass To Replace Main Door AssemblyTo Replace Main Door Hinge Pad To Replace Front PanelTo Replace Small Idler Pulley Pulleys To Replace Tumbler PulleyTo Replace Motor Pulley To Replace Large Idler PulleyPage To Replace Tumbler Basket or Tumbler Basket Support Basket Alignment Lateral Side to Side AdjustmentImportant Never strike the shaft directly with a hammer To Replace Front Idler Shaft Pillow Block Bearing To Replace Front Basket Support Pillow Block BearingBelts See illustrations in section F Pulleys Belt Tension Adjustment Basket to IdlerTo Replace Rear Idler Shaft Pillow Block Bearing Motors To Replace Drive Motor Belt Tension Adjustment Motor to IdlerTo Replace V-Belts Page Impellor Lint Drawer Assembly To Replace Lint ScreenTo Replace Lint Drawer Switch Computer will not accept key pad entries TroubleshootingNo display on computer Drive motor runs, burner is on, but basket will not turn Dryer will not start, but computer display indicators are onDryer operates but is taking too long to dry Dryer operates, probe sparks, but gas does not flowOverload for impellor fan motor is tripping Dryer is cycling on burner hi-limit safety thermostatThermal overload for drive motor is tripping There is excessive vibration coming from the basket Display reads dSFL. Dryer Sensor Circuit FailureDryer does not start. Display reads door Electrical Trouble Shooting Diagnostic LED Display Failure Codes Phase 5 OPL System DiagnosticsLED Display Indicators Page Page Cycle Status LED Display/CodesCY F LED Display CodesFill Computer Logic and Wiring Diagram Fault CodesPage No Display Condition Page Blower motor does not operate, drive motor runs Door condition Microprocessor reads Dsfl Motor Plate High and Low Voltage Technical InformationInformation on the Data Label Data Label Contacting American Dryer Corporation ADCHOW to USE a Manometer Using a ManometerAD-170SE Tool List ADC450400 1- 02/27/98-50