Troubleshooting; Information Code - Samsung DMT300 Series Service Manual

4. Troubleshooting

4. Troubleshooting

4.1. Information code

Code Symbol
4-1
Meaning
Temperature Sensor When 0.2V or below, or 4.5V or above is maintained for over 3 seconds.
error
Heater error When the temperature change is 4˚C or less within the first 10 minutes
after the heating starts.
High temperature When the temperature of the Thermistor is 80˚C or above for more than 3
Heating error. seconds.
Low-level water error When Low Level is detected to cause Error even after the water supply
resumes after Low Level is detected for the 1st time.
Water supply error 1) When the pulse of 100 or less is detected even 1 minute after
the water supply.
2) When flow meter pulse is 5 or less 5 seconds after the water
supply starts.
3) When the water supply does not occur 5 minutes after the water
supply starts.
High temperature When 80˚C or above is detected during water supply .
Water supply error
Drain error When OFF status of Low Level S/W is not detected within 3 minutes
during the drain.
Occurring condition Expected condition
Thermistor terminal not connected.
Possible defect : Thermistor, Main PBA
Heater terminal not connected.
Possible defect : Main Wire-Harness, Heater, Heater
Relay, Main PBA
Water supply temperature of 80˚C or above.
Possible defect : Thermistor, Main PBA.
Low Level Sensor terminal not connected.
Possible defect : Low Level Sensor, Main PBA .
Alien particles within water supply valve.
Water supply valve terminal not connected.
Possible defect : Main PB, Water supply valve, Flow
Meter.
Water supply temperature of 80˚C or above.
Possible defect : Thermistor, Main PBA.
Alien particles clogging mater drain hose.
Drain valve terminal not connected.
Possible defect : Drain pump, Low Level Sensor,
Main PBA.
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