Troubleshooting; Information Modes - Samsung WA7750M Service Manual

4. TROUBLESHOOTING

4-1. INFORMATION MODES

► This is a washer integrated information mode. For detailed information, refer to the general repair scripts.
Check Type For USA
Water Level
1C
Sensor
Motor Driving
3C
Check
4C
Water Supply
Check
4C2
Drain Check 5C
Power Check 9C1,9C2
- The part of the hose where the water level sensor is located is
damaged (punctured).
- The hose is clogged with foreign material.
- The hose is folded.
- Too much lubricant has been applied to the insertion part of the
air hose.
- Hose engagement Check. (disengaged)
- Part fault. (Faulty internal soldering)
- The water level sensor terminal is disengaged.
- Main PBA fault.
- The PBA connector terminal is not connected.
- The motor spin net is not engaged.
- The motor's internal coil is damaged. (short-circuited or cut)
- Foreign material (a screw) has entered the motor.
- Motor overloaded due to too much laundry. (Non-sensing)
- PBA fault.
- The motor driving Check from the PBA is weak.
Unstable relay operation, etc.
- The IPM terminal of the main PBA is not connected.
- The DD motor cover is out of place.
- The PCB housing terminal is not connected.
- PBA fault.
- DD motor fault.
- Foreign material is entering the water supply valve.
- The water supply valve terminal is not connected.
(Wire disconnected)
- The warm water and rinse connectors are wrongly connected
to each other.
- This occurs if the PCB terminal from the drain hose to the
detergent drawer is not connected. Check whether the
transparent hose is folded or torn.
- The water supply hoses are kinked thereby restricting water flow.
- The cold and warm water supply hoses are wrongly engaged
into each other.
- The temperature of the water supplied through the dry valve
during a dry cycle is sensed as higher than 70 ˚C.
- The water temperature is sensed as higher than 50 ˚C in the
Wool or Lingerie courses.
- The pump motor impeller is damaged internally.
- The wrong voltage is supplied to the parts.
- Part fault.
- This occurs due to freezing in the winter season.
- The drain hose is clogged. (Injection Check, foreign material)
- Clogged with foreign material.
- The water pump terminal is not connected: rubber band, bills,
cotton, hair pins, coins have collected inside the drain pump
ASSY.
- Check the consumer's power conditions.
: Make sure to check the operating voltage. Connect a
tester to the internal power terminals during the Boil or Dry
operations and observe the washing machine's operation
carefully.
: Check the voltages.
(An Check occurs when under or over voltage is supplied.)
: Check whether a plug receptacle is used.
When the connecting wire is 1m, a momentary low voltage
may drop up to 10 V
- Main PBA fault (sometimes)
Causes Remarks
This Check occurs
because of restrained
revolutions.
This Check occurs
when an interference
is generated due to too
much laundry, etc.
The water supplied for
1 minute drying the
drying cycle is 0.3 ~
0.4 L.
Troubleshooting _ 21