GAS only Ignition Attempt Failure | American Dryer Corp ML-170

2. Fault Codes

bURNER CONTROL FAIL

- GAS MODELS ONLY POWER (24 VAC) IS NOT EVIDENT AT GAS VALVE

bURNER FLAME FAIL

-The Phase 6 Microprocessor Controller (Computer) DOES NOT SENSE FLAME VERIFICATION (GAS MODEL ONLY)

bURNER SAFETY FAIL

- GAS/ELECTRIC ONLY BURNER/OVEN OPEN HI-LIMIT CIRCUIT

dRUM SAFETY FAIL

- Fault in the TUMBLER (BASKET) HI-LIMIT CIRCUIT

HOT

- Indicates an OVERHEAT CONDITION

LINT dOOR

-When the LINT DOOR OR DRAWER is open or there is a fault in the LINT DOOR/DRAWER CIRCUIT

MAIN dOOR

- When the MAIN DOOR is open or there is a fault in the DOOR CIRCUIT

No AIRFLOW

- Fault in the SAIL SWITCH CIRCUIT (GAS/ELECTRIC MODELS ONLY)

No HEAT

- GAS ONLY IGNITION ATTEMPT FAILURE

ROTATE SENSOR FAIL

- Fault in the ROTATION SENSOR CIRCUIT

SAIL SWITCH FAIL

- Fault in the SAIL SWITCH CIRCUIT (GAS/ELECTRIC MODELS ONLY)

TEMP SENSOR CHECK TEMP SENSOR FUSE

- Fault in the MICROPROCESSOR TEMPERATURE SENSOR CIRCUIT

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American Dryer Corp ML-170 GAS Models only Power 24 VAC is not Evident AT GAS Valve, GAS only Ignition Attempt Failure

Contents

ML-145 / ML-170 American Dryer Corporation Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Content Section Technical Information Safety Precautions Important Information Standards Routine Maintenance Cleaning Adjustments Lubrication Electrical and GAS Requirements Installation RequirementsENCLOSURE, AIR SUPPLY, and Exhaust Requirements Operational Service Check Procedure Gas 10.5 inches water column 26.1 mb Description of Parts Control Panel MicroprocessorControl Panel NON-MICROPROCESSOR Control BOX GAS Burner Assembly HSI HOT Surface Ignition ModuleGas Models only Drive Motor Tumbler Basket Bearing and Pulley Arrangement Idler AssemblyBlower Motor and Impellor GAS and Steam Tumbler Basket Main Door SwitchSail Switch Gas Models only Lint Drawer Automatic Reset ThermostatHI-LIMIT Gas Models only Lint Drawer Switch Temperature Sensor Bracket NON-COMPUTERSteam Damper System Compressed AIR Requirements Servicing IntroductionComputer Controls To Replace Computer To Replace Keyboard Touchpad Label Assembly To Replace Microprocessor Temperature Sensor Probe To Replace Gas Valve Refer to above burner illustration To Remove Flame Probe AssemblyIgnition Controls To Test and Adjust Gas Water Column Pressure To Replace Main Burner Orifices To Convert from Natural Gas to L.P. Gas To Replace Burner Tubes To Replace Burner Hi-Limit Thermostat Gas Models Only To Replace HSI Hot Surface Ignition ModuleThermostats Sail Switch Assembly Gas Models only To Replace Sail Switch To Adjust Sail Switch To Replace Main Door Assembly To Install New Main Door Glass To Replace Front Panel To Replace Tumbler Basket Pulley To Replace Main Door Hinge BlocksPulleys To Replace Small Idler Pulley To Replace Large Idler Pulley To Replace Motor Pulley Tumbler Basket AssemblyTumbler Basket Alignment Vertical Up and Down Adjustment Tumbler Basket Alignment Lateral Side to Side Adjustment To Replace Tumbler Basket or Tumbler Basket Support Important Never strike the shaft directly with a hammer To Replace Front Tumbler Basket Support Pillow Block Bearing To Replace Front Idler Shaft Pillow Block Bearing Belts Refer to illustrations in section F Pulleys Belt Tension Adjustment Tumbler Basket to IdlerTo Replace Rear Idler Shaft Pillow Block Bearing Belt Tension Adjustment Motor to Idler To Replace V-BeltsMotors To Replace Drive Motor Impellor Lint Drawer Assembly To Replace Lint Screen To Replace Lint Drawer Switch Troubleshooting Computer will not accept keyboard touchpad entries Display is reading Rotation Sensor Fail Display is reading no Airflow Display is reading Sail Switch Fail Display is reading Drum Safety FailDisplay is reading Burner Safety Fail Display is reading No Heat Display is reading Burner Control Failure Display is reading Burner Flame FailureDisplay is reading Main Door Display is reading Lint Door Thermal overload for drive motor is tripping Display is reading HotDryer operates but is taking too long to dry Overload for impellor fan motor is tripping There is excessive vibration coming from the tumbler basket Electrical Troubleshooting Phase 6 OPL System Diagnostics Diagnostic L.E.D. light emitting diode Display Failure CodesPage E.D. light emitting diode Display Indicators E.D. Display Indicator Number E.D. Display Indicator Number HT1 Heat Output L.E.D. Indicator FAN Blower Output L.E.D. light emitting diode IndicatorAIR AIR JET Output L.E.D. Indicator Optional Fuse Main Fuse Input L.E.D. Indicator Lint Lint Door Input L.E.D. IndicatorMain Main Door Input L.E.D. Indicator Drum Tumbler Basket HI-LIMIT Input L.E.D. Indicator Flame bURNER Control Fail Input L.E.D. Indicator Power Supply Input L.E.D. Indicator D. DISPLAY/CODES E.D. Display Operating Status Phase 6 OPL Microprocessor L.E.D. Displays E.D. Codes 1. Display Codes ALL REV GAS only Ignition Attempt Failure GAS Models only Power 24 VAC is not Evident AT GAS ValveGAS/ELECTRIC only BURNER/OVEN Open HI-LIMIT Circuit Computer Logic and Wiring Diagram No Display Condition Blower motor does not operate, drive motor runs No Heat Drive and Blower Motors Run Gas Models No Heat Drive and Blower Motors Run Steam Models Door Condition Technical Information Motor Plate High and LOW Voltage Data Label Information on the Data Label Using a Manometer How to Use a Manometer ML-170 Tool List ADC 450429 1- 02/18/00-25