Samsung DV42H5 Handbuch
1
CLOTHES DRYER
Technical Information
CAUTION
All safety information must be followed as provided in Service Manual of DV45H*, DV42H*.
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to dryer
before servicing, unless testing requires power.
Code No. : DC68-03382A_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 (DV45H*, DV42H*) for detailed installation, operating, testing,
troubleshooting, and disassembly instructions.
Technical_information-03382A_EN_131209.indd 1 2013-12-09 �� 5:37:30
2
ERROR ITEMS AND DIAGNOSTIC CODES
An occurrence of an Error will make a sound of error melody for 5sec and continuously show one
of the Error Displays from the following errors.
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 Running the dryer with door open
Check for:
- Close the door, and run the dryer.
- Loose or open wire terminals in Door
Sense circuit.
dF Invalid Door Switch
Check for:
- Loose or open wire terminals in Door
Sense circuit.
bE2 Invalid state of key. Check for:
- Display PCB key circuit short or not.
FE Invalid power source Frequency
Check for:
- Not using regular power source
frequency
- Invalid 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.
Technical_information-03382A_EN_131209.indd 2 2013-12-09 �� 5:37:30
3
TEST MODE
Data Display Mode
How to Enter:
- In normal mode, press Drylevel Time Temp Time in less than 2 seconds to enter the
display mode.
- To change the mode, use the cycle selector dial.
Definition of Data Display Mode:
- Display Mode 1 : Main micom version
- Display Mode 2 : display micom version
- Display Mode 3 : touch module version
- Display Mode 4 : option value
- Display Mode 5 : Temperature data
- Display Mode 6 : Average temperature data for 1 minute
- Display Mode 7 : Temperature data for detecting vent clog up
- Display Mode 8 : Average touch sensor data for 1 minute
- Display Mode 9 : cycle count
Smart Install
This allows service personnel to check if the dryer is installed properly.
To enter this mode
Turn on the product, and press and hold the Adjust Time Up + Temp key for 7 seconds.
A message of “SC” appears on the display.
1. Checking the touch sensor
Enter the Smart Install mode, and open the door. The state of the touch sensor appears on the
display.
0 : Touch sensor open
1 : Touch sensor short
Put a wet cloth on the touch sensor to display "1". Releasing it displays "0".
2. Checking the motor and the heater
After checking the touch sensor is complete, press the Start button to enter the checking
mode. When the checking is complete, the results appear on the display.
OK : Both motor and heater work normally
HE : Motor or heater doesn't work normally
To exit the Smart Install mode, turn off the product.
Error Recall Mode
The Error Recall mode reminds users of the latest error that appeared.
Press and hold both the Wrinkle prevent + Dry Level keys for more than 7 seconds to enter this mode.
In the Error Recall mode, the most recent error that occurred is displayed. If there is no recent error,
nothing is displayed.
ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before
servicing, unless testing requires power.
Technical_information-03382A_EN_131209.indd 3 2013-12-09 �� 5:37:31
4
ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before
servicing, unless testing requires power.
TROUBLE DIAGNOSIS
- As the micom dry machine is configured of the complicate structure, there might be the
service call.
Below information is prepared for exact trouble diagnosis and suitable repair guide.
Caution for the Repair and Replacement
1) As some electronic components are damaged by the charged static electricity from the resin
part of dryer or the human body, prepare the human body earth or remove the potential
difference of the human body and dryer by contacting the power supply plug when the work
contacting to PCB is executed.
2) As the P.C.B assembly is designed for no trouble, do not replace the P.C.B assembly by the
wrong diagnosis and follow the procedure of the trouble diagnosis when the micom is not
operated normally.
Please follow below instruction for the trouble diagnosis and parts replacement.
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5
No Problem What To Do
1Will Not Start or Run
• All wires are hooked up to their corresponding terminals.
• Dryer is plugged in.
• Blown fuse or circuit breaker.
• Door switch functional...door closed. Check for error code 3 (See
Table for codedefinition).
• Start/Pause rotary selector dial functional.
• Control Board operational.
• Belt off or broken and Belt Cut-off Switch operates.
• 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
• Belt off or broken/damaged.
• Idler tension spring too weak or stretched.
• Idler pulley jammed or stuck.
3Runs a few minutes
and then stops
• Lint buildup around drive motor.
• Low voltage present.
• Blower impeller blocked in blower housing.
• 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 above points are not found, the PCB assembly is out of order.
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 the house wiring, fuse box or circuit breaker is suspected to be
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.
• 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 shall fire 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.
Technical_information-03382A_EN_131209.indd 5 2013-12-09 �� 5:37:31
6
No Problem What To Do
8The igniter does not
glow
If the igniter does not heat up, remove power and using an ohmmeter,
check the following:
• Open flame 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 flame is not ignited, remove
power and using an ohmmeter, check the following:
• Open secondary coil
• Open holding coil
• Open wire harness
• Stuck flame sensor (Stuck closed)
10
The gas is ignited
but the flame goes
out
If a normal ignition takes place and after a short while the flame 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 filter is not clean.
• Restriction in exhaust.
• Outside exhaust hood damper door stuck closed.
• Exhaust too long, too many elbows, flex 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 insufficient spin out by washer.
12 Noisy and/Or
Vibration
• Thumping Check for loose tumbler baffle, 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.
Technical_information-03382A_EN_131209.indd 6 2013-12-09 �� 5:37:31
7
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 infinity, replace thermostat 3.
Thermostat 2 resistance < 1Ω
- If resistance is infinity, replace thermostat 2.
[DUAL] Heater resistance 13 Ω (PIN 2-3) Heater
resistance 34 Ω (PIN 1-2)
- If resistance is infinity, replace Heater.
[SINGLE] Heater resistance 10 Ω (PIN 1-3)
- If resistance is infinity, replace Heater.
1
2
3
Measure resistance of the following terminal
1) Door switch : off
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-off S/W
- Lever open: Resistance value < 1Ω
- Lever push: Resistance value : ∞ Ω
Lamp resistance : ∞ Ω, (-) : BLU, (+) : WHT
Motor (Electronic & GAS)
Contacts
Function 1M 2M 3M 5M 6M
Start
Run
= Contact closed
Centrifugal Switch (Motor)
2.88Ω between
Pin# 3 and 4
3.5Ω between
Pin# 4 and 5
Technical_information-03382A_EN_131209.indd 7 2013-12-09 �� 5:37:33
8
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 infinite, replace Radiant sensor
Igniter(101D)
Resistance value 40~400 Ω
If resistance is infinite, replace Igniter
Gas Valve(25M01A)
Valve 1-2 : Resistance value about 1365 Ω
Valve 1-3 : Resistance value about 560 Ω
Valve 4-5 : Resistance value about 1325 Ω
If resistance is infinity, replace Valve
Thermostat (60T21 Hi-Limit)230F-50F
Resistance value < 1 Ω
If resistance is infinity, replace Thermostat
THERMISTOR
238.23Ω @ 25 °C 77
Technical_information-03382A_EN_131209.indd 8 2013-12-09 �� 5:37:35
9
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 190 Ω ± 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
Technical_information-03382A_EN_131209.indd 9 2013-12-09 �� 5:37:36
10
3-WIRE system connections
A. External ground connector
B. Neutral grounding wire (green/yellow)
C. Center silver-colored terminal block screw
D. Neutral wire (white or center wire)
E. ¾” (1.9 cm) UL-listed strain relief
1. Loosen or remove the center terminal block screw.
2. Connect the neutral wire (white or center wire) of the power
cord to the center, silver-colored terminal screw of the terminal
block. Tighten screw.
3. Connect the other wires to outer terminal block screws. Tighten screws.
4. Tighten the strain relief screws.
5. Insert the tab of the terminal block cover into your Dryer’s rear panel slot.
Secure the cover with a hold-down screw.
If converting from a 4-wire electrical system to a 3-wire, the ground strap must be
reconnected to the terminal block support to ground the Dryer frame to the neutral
conductor.
4-WIRE system connections
A. External ground connector
B. Green or bare copper wire of power cord
C. ¾” (1.9 cm) UL-listed strain relief
D. Center silver-colored terminal block screw
E. Neutral Grounding wire (green/yellow)
F. Neutral wire (white or center wire)
1. Remove the External ground connector screw.
2. Connect the ground wire (green or unwrapped) of the power cord to the external ground
connector screw. If you want to connect B(Green or bare copper wire of power cord) to the
Neutral Post without assembling with A(cabinet ground), call the service technician.
3. Loosen or remove the center terminal block screw.
4. Connect the neutral wire (white or center wire) of the power cord and the appliance
ground wire (green with yellow stripes) under the central screw of the terminal block.
5. Connect the other wires to the outer terminal block screws. Tighten screws.
6. Tighten the strain relief screws.
7. Insert the tab of the terminal block cover into your Dryer’s rear panel slot.
Secure the cover with a hold-down screw.
TROUBLE SHOOTING
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before
servicing, unless testing requires power.
Technical_information-03382A_EN_131209.indd 10 2013-12-09 �� 5:37:36
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