Troubleshooting - Samsung DMT800 SERIES Service Manual

4. Troubleshooting

4-1. Information code
4-2-1. DMT800 & DMT700 series
CODE SYMBOL Meaning
Temperature
sensor Error
Heater Error
High temperature
Heating error.
Low-level water
error
Half load function
error
Water supply error
High temperature
Water supply error
Drain error
Over-level water
error
Leakage
Button error
Door open warning When door is open in washing period.
4-1
Occurring condition
When 0.2V or below, or 4.5V or above is maintained for over 3 seconds.
When the temperature change is 4˚C or less within the first 10 minutes after
the heating starts.
When the temperature of the Thermistor is 80˚C or above for more than 3
seconds.
1.When high level sensor is not detected after water supply was done, drain &
refill the water. After then, if high level sensor is not detected again, this error is
occurred.
2.When low level sensor is detected over 5 seconds during wash operation,
this error is occurred.
When micro s/w is not detected for over 30 seconds after the Distributor motor
starts.
1. When the pulse of 100 or less is detected even 73 seconds after the water
supply.
2. When flow meter pulse is 5 or less for 13 seconds after the water supply
starts.
3. When the water supply does not complete 6 minutes after the water supply
starts.
When 80˚C or above is detected during water supply
When OFF status of Low Level S/W is not detected within 3 minutes during
the drain.
When overflow detection AD data is 3.5V or below for 3 seconds (When
leakage sensor detects 3.5V or below for 1 seconds during water supply)
When leakage sensor detects 3.5V or below for 1 seconds
When the button is pressed continuously for over 30 seconds.
Expected condition
Thermistor terminal not connected.
Possible defect : Thermistor , Main PBA.
Heater terminal not connected.
Possible defect : Main Wire-Harness, Heater, Main PBA.
Water supply temperature of 80˚C or above.
Possible defect : Thermistor , Main PBA.
Water-level sensor terminal is not connected.
Possible defect : Assy case sensor, Water Level Sensor , Main
PBA.
Distributor motor defect.
Micro SW terminal is not connected.
Main PBA defect.
Alien particles within water supply valve.
Water supply valve terminal not connected.
Possible defect : Main PBA, Water supply valve , Flow Meter.
Water supply temperature is 80˚C or above.
Possible defect : Thermistor, Main PBA.
Alien particles are clogging in drain hose.
Drain pump terminal is not connected.
Possible defect : Drain pump, Water-level sensor , Main PBA.
Alien particles within water supply valve.
Case Sensor part breakdown.
Possible defect : Flow Meter, Main PBA, Water supply valve.
Possible defect : Each hose connection , Sump and Tub
assembly, Drain Pump assembly , Main PBA.
Possible defect : Sub PBA in control panel, Main PBA.
Door is not closed properly in test mode only.
Possible defect : Door lock switch, Main PBA.
4. Troubleshooting