Samsung DV56H9000G Series Manual

1
CLOTHES DRYER
Technical Information
CAUTION
All safety information must be followed as provided in Service Manual of DV56H9000E(G)*.
WARNING
To avoid risk of electrical shock, personal injury or death, disconnect power to dryer
before servicing, unless testing requires power.
Code No. : DC68-03171F_EN
IMPORTANT SAFETY NOTICE – “For Technicians only” This service data sheet is intended for
use by persons having electrical, electronic, and mechanical experience and knowledge at a level
generally considered acceptable in the appliance repair trade. Any attempt to repair a major
appliance may result in personal injury and property damage. The manufacturer or seller cannot
be responsible, nor assume any liability for injury or damage of any kind arising from the use of
this data sheet.
• Duetopossibilityofpersonalinjuryorpropertydamage,alwayscontactanauthorized
technician for servicing or repair of this unit.
• RefertoServiceManual(DV56H9000E(G)*)fordetailedinstallation,operating,testing,
troubleshooting, and disassembly instructions.
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2
ERROR ITEMS AND DIAGNOSTIC CODES
When an error occurs, the dryer will sound an error tone for 5 seconds and show one of the
following Error Codes in its display continuously.
Error Display Trigger Action Taken
tE The Thermistor resistance is
very low or high.
Check for:
- Clogged lint screen.
-Restrictedventsystem.
- Check Thermistor resistance.
dE Dryer running with door open.
Check for:
- Close the door and run the dryer.
- Check for loose or open wire terminals in
Door Sensing circuit.
dF Invalid door condition.
Check for:
- Loose or open wire terminals in Door
Sense circuit.
bE2 Key on display panel in invalid
state.
Check for:
- Check if display PCB circuit has short.
FE Invalid power source frequency.
Check for:
- Not using regular power source frequency.
- Faulty power frequency sense circuit.
9E1 Electronic control problem.
(Over Voltage Error)
Check for:
- Check PCB and Wire harness.
- Check Power supply.
AE Electronic Control Problem.
(Communication Error)
Check for:
- Check PCB and Wire harness.
-ReplacePCB.
EEE Invalid state of Eeprom
communication.
Check for :
- PCB with Eeprom circuit.
HE Invalid heating Temp in running
the dryer. Call customer service.
ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death, disconnect power to dryer before
servicing, unless testing requires power.
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3
TEST MODE
Continuous Run Mode:
1. Press Mixed Load Bell + Dry Level for 7 sec during Power On State (Normal User Mode).
2. OnceinContinuousRunMode,displays“CC”for1secandthenumberofCyclefor1secand
the remaining time for 1 sec in turns.
3. ThepreviouscyclewillrestartduringContinuousRunModeuntilthemodeisdeactivated.
4. DuringContinuousRunMode,pressMixedLoadBell+DryLevelfor7secondstoreturnto
normal user mode.
Service Mode
Denition of Service Mode
- Dryer must be on before Service Mode can be entered.
- Upon entry into Service Mode, the Sensor Bar Touch Data will be shown (Default Service
Mode).
How to Enter:
- To enter Service Mode, press Mixed Load Bell and Temp Keys for 3 seconds, until dryer beeps.
-Press Mixed Load Bell + Temp Keys for 3 seconds in Service mode to return Normal mode.
-Even though entering Service mode, the operating cycle will not be inuenced.
Sensor Bar Touch Data Mode
Denition of Sensor Bar Touch Data Mode:
- This action will put the dryer into sensor bar touch data mode.
- Dryer will display Sensor Bar data. This mode is the default initial service mode.
How to Enter:
- With Power On, press Mixed Load Bell and Temp Keys for 3 seconds.
Cycle Count Mode
Denition of Cycle Count Mode:
- This mode displays the total number of cycles the dryer has performed.
How to Enter:
-To enter cycle count mode, press the Mixed Load Bell in Service Mode.
Software Version Mode
Denition of Software Version Mode:
- Displays the software version.
How to Enter:
- In Service Mode, press Temp until the dryer beeps.
Softwareversionexample:Incaseof“U005”,U0meansmajorversion“U0”05meansminor
version“05”.
- Press the Temp Key in the Software Version mode to return to Service Mode.
ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death, disconnect power to dryer before
servicing, unless testing requires power.
Mixed Load Bell
+Dry Level 7 sec
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Data Display Mode
Denition of Temperature Display Mode:
- Display Mode 0 : Temperature data (Celsius)
- Display Mode 1 : Average Touch Sensor data for 1 minute
- Display Mode 2 : Average Temperature (Celsius) data for 1 minute
How to Enter:
- With Power On, press AdjustUp Key + AdjsutDown Key for 7 seconds until the dryer beeps.
- If no keys are pressed for 5 minutes, Data Display Mode will terminate.
- Press the AdjustUp Key to increase the Display Mode ID.
- Press the AdjustDown Key to decrease the Display Mode ID.
• Converting °C  °F
Celsius(°C) -30 -10 10 30 50 70 F =9/5C + 32
Fahrenheit(°F) -22 14 50 86 122 158
System Check Mode
Denition of System Check Mode:
- “02”willdisplay.
- System Check Mode (02 mode) Progress Function Performed Start/Pause
Motor(CW)RelayOnHeaterRelayOnHeaterRelayO,Motor(CW)RelayO
How to Enter:
- WhileinPowerO,presstheDryLevel+Powerkeyssimultaneouslytoputthedryerintothe
System Check mode.
ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death, disconnect power to dryer before
servicing, unless testing requires power.
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5
TROUBLE DIAGNOSIS
- The information below is designed to help you arrive at an exact trouble diagnosis and
suitable repair.
Caution for the Repair and Replacement
1) As some electronic components can be damaged by static electricity from the resin part of
dryer or from a human body, make sure you remove the potential for static discharge by
grounding yourself or by contacting the power supply plug before you work on the PCB.
2) The P.C.B, assembly is designed to be durable and trouble-free. Do not replace the P.C.B
assembly unless your diagnosis identies the P.C.B assembly as the cause of the problem.
Follow the trouble diagnosis procedure when the micom is not operating normally to ensure
you replace the correct parts.
ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death, disconnect power to dryer before
servicing, unless testing requires power.
Please follow below instruction to diagnose the problem and determine which, if any,
parts need to be replaced.
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No Problem What To Check or Do
1Will Not Start or Run
•Conrm all wires are hooked up to their corresponding
terminals.
•Conrm dryer is plugged in.
•Check for blown fuse or circuit breaker.
•If door switch functional...door closed. Check for error code 3
(See Table for code denition).
• Check if Start/Pause rotary selector dial functional.
• Check if Control Board operational.
• Check if beltoorbrokenandBeltCut-oSwitchoperates.
• Check if drive motor functional.
• Check motor winding resistance: 2.88ohms between pin #3 and
4, 3.5ohms between pin #4 and 5.
2Motor runs/ tumbler
will not turn
• Check if beltoorbroken/damaged.
• Check if idler tension spring too weak or stretched.
• Check if idler pulley jammed or stuck.
3Runs a few minutes
and then stops
• Check for lint buildup around drive motor.
• Check if low voltage present.
• Check if blower impeller blocked in blower housing.
• Check if drive motor - start switch contacts stuck closed.
4Blows fuses or trips
circuit breaker
- Is the belt connected well?
- Is the winding of the motor continuous?
(Rotorwinding,statorwinding,generator)
- Is the motor protector normal?
•If there are no problems with the items above, the PCB assembly
isdefective.Replaceit.
5
Blows fuses or trips
circuit breaker (Gas
Model)
•During ignition, the dryer will draw X amps. With the burner ON,
the dryer will draw X amps. If the dryer is drawing amperages
above this, then suspect the house wiring, fuse box, or circuit
breaker is at fault.
•Igniter harness loose and shorted to base.
•Incorrect wiring or wire shorted to ground.
•Drive motor winding shorting to ground.
6Will not heat (motor
runs)
Open heating element. Check if:
•Hi-Limit trips easily or is open.
•Regulatingthermostattripseasilyorisopen.
•Membrane switch open.
•Check Thermistor.
7
Will Not Dry Gas
Model Poor Gas
Ignition
When the dryer is operated on a heat setting, the igniter should be
energizedandburnershouldrewithin45secondsat120VAC.The
failure of a component in this system will usually be indicated by one
of three symptoms:
TROUBLE SHOOTING
WARNING
To avoid risk of electrical shock, personal injury or death, disconnect power to dryer before
servicing, unless testing requires power.
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No Problem What To Check or Do
8The igniter does not
glow
If the igniter does not heat up, remove power and, using an
ohmmeter, check the following:
•Open ame sensor
•Open igniter
•Shorted booster coil
•Open wiring
•Bad motor switch (Neutral supply)
•No power from control (L1 supply)
9Igniter glows - No gas
ignition
If the igniter heats up, but the main burner ame does not ignite,
remove power and, using an ohmmeter, check the following:
•Open secondary coil
•Open holding coil
•Open wire harness
•Stuck ame sensor (Stuck closed)
10 The gas is ignited but
the ame goes out
If a normal ignition takes place and after a short while the ame goes
out, check for the following:
•Radiantsensorcontactsopeningprematurely.
•Weak gas valve coil may open when stressed by higher Temps.
•Weak Hi-Limit
•Poor venting
•Bad drum seals
11
Improper drying,
clothes wrinkled,
Rough texture, long
dry time.
•Lint lter is not clean.
•Restrictioninexhaust.
•Outside exhaust hood damper door stuck closed.
•Exhaust too long, too many elbows, ex ductwork installed.
•Poor intake air available for the dryer.
•Incorrect tumbler speed. Tumbler belt slipping.
•
Blower impeller bound; check for foreign material in blower area.
•Customer overloading dryer.
•Check clothing labels for fabric content and cycle selected.
•Clothes too wet due to insucient spin out by washer.
12 Noisy and/Or
Vibration
•Thumping: Check for loose tumbler bae, rear tumbler roller(s)
worn or misaligned, out-of-round tumbler or high weld seam on
tumbler.
•Ticking: Check for loose wire harness or object caught in blower
wheel area.
•Scraping: Check for front or rear bulkhead felt seal out of
position or worn tumbler front bearings.
•Roaring:Checkforblowerwheelrubbingonblowerhousingor
bad motor bearings.
•Popping or squealing sound: Check for a sticky or frayed belt.
TROUBLE SHOOTING
WARNING
To avoid risk of electrical shock, personal injury or death, disconnect power to dryer before
servicing, unless testing requires power.
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TROUBLE SHOOTING
WARNING
To avoid risk of electrical shock, personal injury or death, disconnect power to dryer before
servicing, unless testing requires power.
COMPONENT TESTING PROCEDURES
Component Electrical Testing (with ohmmeter)
Thermistor resistance 10K Ω @ 25°C 77°F
Thermostat 1 resistance < 1Ω

Thermostat 3 resistance < 1Ω
- If resistance is innity, replace thermostat 3.

Thermostat 2 resistance < 1Ω
- If resistance is innity, replace thermostat 2.
Heater resistance 13 Ω (PIN 2-3)
Heater resistance 34 Ω (PIN 1-2)
- If resistance is innity, replace Heater.

Measure resistance of the following terminal
1) Doorswitch:O
Terminal : “COM” - “NC” (1-3) : <1Ω
Terminal : “COM” - “NO” (1-2) : ∞ Ω
2) Door switch : On
Terminal : “COM” - “NC” (1-3) : ∞ Ω
Terminal : “COM” - “NO” (1-2) < 1Ω

BeltCut-oS/W
-Leveropen:Resistancevalue<1Ω
-Leverpush:Resistancevalue:∞Ω
VentSensing-ThermistorResistance
238.23K Ω @ 25℃77℉
Motor (Electronic & GAS)
Contacts
= Contact closed
Centrifugal Switch (Motor)
2.0Ω between
Pin# 3 and 4
2.3Ω between
Pin# 4 and 5
Function 1M 2M 3M 5M 6M
Start
Run
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GAS MODEL
TROUBLE SHOOTING
WARNING
To avoid risk of electrical shock, personal injury or death, disconnect power to dryer before
servicing, unless testing requires power.
Radiant Sensor(10RS)
Resistancevalue<1Ω
Ifresistanceisinnite,replaceRadiantsensor
Igniter(101D)
Resistancevalue40~400Ω
If resistance is innite, replace Igniter
Gas Valve(25M01A)
Valve1-2:Resistancevalueabout1.2KΩ
Valve1-3:Resistancevalueabout0.5KΩ
Valve4-5:Resistancevalueabout1.2KΩ
If resistance is innity, replace Valve
Thermostat (60T21 Hi-Limit)230F-50F
Resistancevalue<1Ω
If resistance is innity, replace Thermostat
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TROUBLE SHOOTING
WARNING
To avoid risk of electrical shock, personal injury or death, disconnect power to dryer before
servicing, unless testing requires power.
Sensor Bars & temperature sensor check
Sensor Bars - Disconnect harness and test Pink wire
Pin 4 to Orange wire Pin 5.
Approx∞Ωwithoutlaundry
Approx190Ω±10%withwetclothes
Cycling Thermistor 1 - Disconnect harness and test
BluewirePin3toRedwirePin6.
Approx10KΩat25°C/77°F
Vent Thermistor 2 (Vent sensor model only
)
-Disconnect harness and test
Yellow wire Pin 2 to White wire Pin 7.
Approx238.23KΩat 25 °C/77 °F
RY6RY7
CN4
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