ADC ML-82 service manual Phase 6 OPL System Diagnostics, Diagnostic L.E.D. Display Failure Codes

Page 38

SECTION VI

PHASE 6 OPL SYSTEM DIAGNOSTICS

IMPORTANT: You must DISCONNECT and LOCKOUT THE ELECTRIC, GAS or STEAM SUPPLY BEFORE ANY COVERS or GUARDS ARE REMOVED FROM THE MACHINE TO ALLOWACCESS FOR CLEANING, ADJUSTING, INSTALLATION, or TESTING OFANY EQUIPMENT per OSHA(Occupational Safety and HealthAdministration) STANDARDS.

ALL major circuits, including door, microprocessor temperature sensor, heat and motor circuits are monitored. The Phase 6 OPL microprocessor controller (computer) will inform the user, via the L.E.D. (light emitting diode) display of certain failure codes, along with indicators both in L.E.D. display and at the output of each relay (and door switch circuit) to easily identify failures.

A.DIAGNOSTIC (L.E.D. DISPLAY) FAILURE CODES

1.SAIL SWITCH FAIL- This routine will prevent start up on the machine unless the sail switch is in the correct position. If the sail switch is closed prior to start up the display will read “SAIL SWITCH FAIL” along with an audio indication.

2.No AIRFLOW- If the sail switch opens during cycle operation the display will read “No AIRFLOW” along with an audio indication. The machine will continue to run with no heat for three (3) minutes or until the temperature drops below 100º F (38º C). Upon failure the machine will shut down and display “No AIRFLOW” with an audio indication.

3.bURNER SAFETY FAIL- Routine monitors the temperature above the burner. If the Burner Hi-Limit switch opens the display will read “bURNER SAFETY FAIL.” The machine will run with no heat for three (3) minutes or until the temperature drops below 100º F (38º C). Upon failure the machine will shut down and display “bURNER SAFETY FAIL” with an audio indication.

4.dRUM SAFETY FAIL- This routine monitors the tumbler temperature of the tumbler Hi-Limit switch opens prior or during the cycle while the heat was on the machine will display “dRUM SAFETY FAIL.” The machine will continue to run with no heat for three (3) minutes or until the temperature drops below 100º F (38º C). Upon failure the machine will shut down and display “dRUM SAFETY FAIL” with an audio indication.

5.No HEAT- This routine monitors the burner ignition. If the burner mis-ignites (does not light) the HSI (Hot Surface Ignition) module will check to see of the microprocessor program has any retries left. The standard retry count is two (2). If the module notices that there are retries left it will purge for one (1) minute then try to ignite the burner again. The HSI module will try this for a total of three (3) times or until there are no retries left. If the burner does not ignite after three attempts the L.E.D. display will display the error code “no heat” with an audio indication. When this occurs the machine will run with no heat for three (3) minutes or until the temperature drops below 100º F (38º C).

IMPORTANT: For other countries, such as Australia, the retry count may not apply due to local approvals.

6.bURNER CONTROL FAIL- This routine monitors the ignition control’s gas valve output response. If the valve output signal is not present from the ignition control within the valve time limits the Phase 6

34

Page 37 Page 39
Image 38
Page 37 Page 39
Contents ML-82 Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Section SERVICE/PARTS Information Safety Precautions Important InformationStandards SPECIFICATIONS/COMPONENT Identification SpecificationsSpecifications MLG-82 Gas MLS-82 Steam Component Identification Page Routine Maintenance CleaningAdjustments LubricationLint Drawer Lint Drawer Switch Control Panel AssemblyDoor Switch Assembly Description of PartsTumbler Bearing Assembly Basket and Support AssemblyTemperature Sensor Bracket Assembly Blower Motor Idler ARM AssemblyDRIVE/FAN Mount Assembly Front Panel Assembly HSI HOT Surface Ignition Burner BOX AssemblySail Switch Assembly Reversing Relay Panel Servicing IntroductionComputer Controls To Replace Keyboard Label AssemblyTo Replace Microprocessor Temperature Sensor Probe To Replace Computer BoardTo Remove Flame Sensor Probe Ignition ControlsTo Remove Hot Surface Ignitor HSI Ignitor Flame Sensor ProbeTo Replace Main Burner Orifices To Test and Adjust Gas Water Column PressureTo Replace Gas Valve Refer to burner illustration on To Convert Natural Gas to L.P. Gas To Replace Burner HI-LIMIT Thermostat GAS Models only To Replace Burner TubesTo Replace HSI Module Sail Switch Assembly GAS Models only To Replace Sail Switch To Adjust Sail SwitchTo Replace Main Door Assembly To Install New Main Door GlassTo Replace Front Panel To Replace Main Door Hinge BlockSteam Controls Installation To Replace Steam Coil Damper SystemTo Replace the 3-Way Micro Valve To Replace PistonTo Replace The Needle Valve To Replace Steam CoilTo Replace The Rear Tumbler Bearing Tumbler and Bearing AssemblyTo Replace Tumbler Pulley Reversing To Replace Idler Pulley Idler Shaft and Bearing AssemblyTo Replace The Front Tumbler Bearing To Replace Idler BearingTumbler Alignment Vertical Drive PulleyTumbler Basket Tumbler Alignment Lateral To Replace The Tumbler And/Or Tumbler SupportBelt Tension Adjustment-Tumbler To Idler Belts Refer to Illustrations in Sections I and KBelt Tension Alignment Motor To Idler To Replace V-BeltsPhase 6 OPL System Diagnostics Diagnostic L.E.D. Display Failure CodesPage E.D. Light Emitting Diode Display Indicators E.D. Display Indicator NumberPage 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. IndicatorDrum Tumbler HI-LIMIT Input L.E.D. Indicator Lint Lint Door Input L.E.D. light emitting diode IndicatorMain Main Door Input L.E.D. Indicator Sail Sail Switch Input L.E.D. IndicatorPower Supply Input L.E.D. Indicator E.D. Codes GAS/ELECTRIC only BURNER/OVEN Open HI-LIMIT Circuit Fault CodesGAS Models only Power 24 VAC is not Evident AT GAS Valve GAS only Ignition Attempt FailureTroubleshooting Computer will not accept keypad touchpad entriesThermal overload for drive motor is tripping Drive motor runs, burner is on, but basket will not turnDryer operates but is taking too long to dry Burner hi-limit safety thermostat is tripping Overload for impellor fan motor is trippingThere is excessive vibration coming from the basket Electrical Troubleshooting No Display Condition Drive motor reverses but does not forward, blower motor runsBlower motor does not operate, drive motor runs Lint Door ConditionMain Door Condition Temp Sensor Fail CheckFor example Technical InformationMotor Plate High and LOW Voltage Data Label Contact American Dryer CorporationData Label Model Dryer American Gas Association, Canadian Gas AssociationManual Reset HI-LIMIT Instructions Computer Logic Parts SERVICE/PARTS InformationService Returning Warranty Parts Warranty InformationReturning Warranty Cards Page ML-82 Tool List ADC 450404 1- 12/21/99-50
Top Page Image Contents