tech-sheet-63407280-rev-b
Trouble Shooting Service Mode Key Pressed: Function Diagnostic Codes Code Description Trigger Action Taken Membrane Pad Continuity Checks This mode provides Service Personnel the ability to Sensor Dry Performed The Diagnostic Codes are identified when the severity The verify the operation of the dryer. Enable sensor level of the abnormality detected is higher and service 2 Thermistor Open thermistor Check for: Note: Unplug connector and touch probe of meter to the Start/Pause dry circuit (sense may be required. resistance is – Low ambient appropriate pin numbers. Meter will show infinity on ! WARNING dry LED) when Sensed very high temperature in open keys and continuity on closed keys. Temperature (^) – 13 Key short circuit is room (Below To avoid risk of electrical shock, personal injury, or death, disconnect power to washer before servicing, unless The Service Mode can be implemented in the middle of or detected across When a problem with the dryer is detected a Diagnostic Invalid state 50oF/10oC). Membrane Pin Number Pin Number testing requires it. any dry cycle. While in the Service Mode, the Dry Temp (^) – 15 Key the sensor bars Code is assigned, and can be displayed. The Control for more – Outside vent Pad Technician can start special diagnostic tests such as a the normal dry Board will not log multiple same codes per cycle; than 256 damper is stuck Troubleshooting Guide System Check Mode, Membrane Pad Check, Display Sensor Dry Level (^) – 13 LED will turn on. however, it will log as many Diagnostics as possible for milliseconds open in Sensor dry J7(12) J7(13) Software version number and display diagnostic/help Key Cycles the motor the machine to continue running. If either wintertime. Time dry J7(11) J7(13) Maytag Neptune Dryer MDE6800A, MDE5500B code listings. or relay on/off. motor Time(^) 13 Key J7(10) J7(13) Very Dry (<) - 15 Key When the motor transistor is Loose or open wire Time(+) 15 Key Due to possibility of personal injury or property damage, always contact an authorized technician for servicing or is running the 3 Door Circuit seen open or terminals Time(v) 13 Key J7(9) J7(13) P1 start/pause LED shorted Time(-) 15 Key BB1 BB2 repair of this unit. Enter Service Mode: is on. Accessing Diagnostic Codes with 13 Key Membrane Failure during Check for: Temperature (^) 13 Key J7(11) J7(14) J3 Press Air Fluff and Time (^) - 13 Key Membrane. If motor is Press Air Fluff and Time (^) to enter Service Mode. startup - Loose or open wire Dry Temp(^) 15 Key J4 Will Not Run Clothes too wet due to insufficient spin out by or running, cycles Press the Wrinkle Release key to access the Dry Temp (v) 15 Key Air Fluff and Time (+) - 15 Key Membrane. the heater/gas Diagnostic Codes. Scroll through the Diagnostic Codes terminals in Door Sensor Dry Level 13 Will not start or run: washer. keys for 3 seconds, or until a beep is heard. The valve on/off. by pressing the Temperature (^) key. The first time the 4 Possible motor Sense circuit. Key All wires are hooked up to their corresponding Will Not Shut Off machine will now be in Service Mode and "d" will be When the heater key is pressed the newest code will be displayed. Each Very Dry (<) 15 Key displayed. is regular temp additional key press shows the next code. Once all the transistor error Check for: Damp Dry (>) 15 Key terminals. Short in Sensor Circuit. LED is on. codes have been displayed a “d” is displayed and the – Loose Wrinkle Release Dryer is plugged in. Check Membrane Pad. View current process repeats. If there are no Diagnostic Codes connections in Wrinkle Prevent J7(10) J7(14) Blown fuse or circuit breaker. Check Electronic Control Board. cycle temperature available, “00” will be displayed for the Diagnostic Code. motor circuit. Air Fluff J7(12) J7(14) Door switch functional…door closed. Troubleshooting the electronic in Celsius. – Run System Start/Pause Check Mode Signal(v) 13 Key Start/Pause switch functional. control circuit: Exit Service Mode and check the Signal(-) 15 Key J7(19) J7(14) Press the OFF key to exit Service Mode or repeat the motor relay Off J7(11) J7(15) Control Board operational. Check for miswiring of the electrical connector at the Air Fluff and Time (+) sequence. function. Signal(^) 13 Key J7(9) J7(15) Drive motor functional. electronic control board. – If relay Signal(+) 15 Key J7(10) J7(15) Blown thermal fuse. Diagnostic Tests Accessing Diagnostic Codes with 15 Key Membrane functions, J7(11) J7(16) Motor runs/ tumbler will not turn: Does not shut off, then the problem is in the Press Air Fluff and Time (+) to enter Service Mode. disregard the J7(12) J7(15) electronic control unit. Disconnect the sensor wire Press the Wrinkle Release key to access the diagnostic Diagnostic Codes. Scroll through the Diagnostic Codes code. J7(9) J7(16) Belt off or broken/damaged. from the sensor bar. If the dryer runs for about 20 The following table lists the various tests available while by pressing the Temperature (^). The first time the key If relay does not J7(12) J7(16) Idler tension spring too weak or stretched. minutes, then shuts down or the timer advances, is pressed the newest code will be displayed. Each function, replace additional key press shows the next code. Once all the machine control Idler pulley jammed or stuck. then the electronic control unit is good and the in the Service Mode, which can be accessed by codes have been displayed a “d” is displayed and the board. process repeats. If there are no Diagnostic Codes Runs a few minutes and then stops: problem lies in the sensor bar. pressing the following keys: available, “00” will be displayed for the Diagnostic Code.

Lint buildup around drive motor. Check sensor for continuity. If found, replace sensor Key Press Special Membrane Pad Check Low voltage present. bar or clean with alcohol. Some fabric softener The membrane check turns all the embedded LED’s on. Blower impeller blocked in blower sheets will coat the sensor bars. Test/Function All the LED’s can then be toggled off by pressing the 5 Not Used key associated with the LED. housing. Noisy and/Or Vibration Wrinkle release Display list of 6 Non Volatile Problem Disregard Ribbon Detected J7 Connector Harness diagnostic codes. Memory with integrity Run membrane pad of check and replace Drive motor – start switch contacts stuck closed. Thumping Check for loose tumbler baffle, rear Then press parameters console w/membrane Blows fuses or trips circuit breaker: tumbler roller(s) worn or misaligned, out-of-round stored in pad if necessary. Temperature (^) – 13 Key To sequence thru While in System Check Mode, pressing the EEPROM The amperage readings are at 240 volts. One line tumbler or high weld seam on tumbler. memory. or the diagnostic There will be no multiple occurrences of either a A key is will be 24 amps and the other line will be 21 amps. Ticking Check for loose wire harness or object Dry Temp (^) – 15 Key and help codes. Air Fluff and Sensor Dry – 13 Key diagnostic code or help code generated in the same sensed to be The neutral line will be at 3 amps. If the above caught in blower wheel area. or cycle reported on the list. But if the same code occurs in pressed amperages are present, then the house wiring, fuse Air Fluff and Sensor Dry – 15 Key repeated cycles, it will be registered. 8 Stuck Key more than box or circuit breaker should be suspect. Scraping Check for front or rear bulkhead felt seal 75 seconds, Shorted heating element to housing. out of position or worn tumbler front bearings. Time (v) – 13 Key Display revision keys for 2 seconds, will start a Membrane Pad Switch Clearing Diagnostic Codes the key shall Incorrect wiring or a wire shorting to ground. or number Test. To exit the test at any point, press the same keys be assumed Drive motor winding shorting to ground. Roaring Check for blower wheel rubbing on blower Time (-) – 15 Key again for 2 seconds or press the OFF key to exit To clear the diagnostic code list press to be stuck. Will Not Dry housing or bad motor bearings. Sensor Dry Level (^) – 13 View current Service Mode. Key cycle temperature Air Fluff and Wrinkle Release – 13 Key Will not heat (motor runs): Popping or squealing sound. Check for a sticky or or in Celsius or Open heating element. frayed belt. Very Dry (<) - 15 Key Air Fluff and Wrinkle Release - 15 Key Hi-Limit trips easily or is open. Start/Pause Start or pause for 3 seconds while in diagnostic mode. Regulating thermostat trips easily or is open. Control Configuration cycle running but Membrane switch open. This Trouble Shooting guide illustrates how the software remain in Pin No. 1 Drive motor centrifugal start switch not allowing works with the 13 and 15 key membrane switches. The diagnostic mode. section on Accessing Diagnostic Codes includes voltage to gas valve or heating element. instruction for use with older control boards. Diagnostic Codes Improper drying/clothes wrinkled/ rough 13 Key Membrane texture/long dry time: System Check Mode Code Description Trigger Action Taken Description Connector Connector Voltage Comments While in Service Mode, pressing the Pin Num Pin Num Lint filter is not clean. Air Fluff and Signal (+) - 13 Key Membrane 1 Dryer Thermistor The Check for: Heater Relay Internal P1 BB1(1) 120VAC Door must be closed. or thermistor - Clogged lint Output Door must be closed Restriction in exhaust. Air Fluff and Signal (+) - 15 Key Membrane Short Sensed resistance is screen. LI Board (input) BB1(1) BB2(3) 120VAC keys for 3 seconds, will put the dryer into the System very low, - Restricted Motor BB1(2) BB2(3) 120VAC Door must be open Outside exhaust hood damper door stuck closed. Check mode and "SC" will display. The following table with a vent system. (input) NTC lists the various functions based on the keys being temperature Neutral (input) BB2(2) BB1(1) 120VAC 70 F = 10K ohms Exhaust too long, too many elbows, flex ductwork pressed. > 175 Failed thermistor. Door Sense BB2(3) BB1(1) 120VAC 150 F = 1754 ohms degrees. Thermistor J4(1) J4(2) 5VDC installed. 15 Key Membrane Poor makeup air available for the dryer. 24VDC Incorrect tumbler speed. Tumbler belt slipping.

Blower impeller bound; check for foreign material in

blower area. System Check Mode Table Sensor Bar J4(3) J4(4)

Customer overloading dryer.

Check clothing labels for fabric content and cycle

selected. 3 5

2 4

Troubleshooting Guide Maytag Neptune LED Electric Dryer

63407280 B