Samsung DMR78AHS/XAC, Service Manual

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4. Troubleshooting
4-8
Error type Error mode Checking Method Corrective actions
Half load error PE
5. Remove the Distributor Motor and check the
operation of the motor.
(Use t8 service inspection mode .)
Normal: The motor rotates normally.
➢
- Faulty: Replace the Distributor Motor.
6. Check the position sensing operations when turning
the Micro Switch on and off.
(Use t8 service inspection mode.)
Check the conduction between the maroon
➢
wire and the pink wire.
Micro switch On: Short
➢
Micro switch Off: Open
➢
- Faulty: Replace the Micro Switch for sensing positions.
- Normal: Replace the valve distributor and CAM switch.
Micro Switch Off
(open)
Micro Switch
push: On (short)
Overflow error oE
1. Check the connections for the Overflow Sensor
connector.
- Reconnect the Overflow Sensor connector.
2. Check whether the Inlet Valve operates normally.
Use t1 service inspection mode.
➢
- See “4E Error”.
3. Check whether water is supplied (even small
amounts) in the intervals when the Inlet Valve is not
operating.
- Remove foreign material from the Inlet Valve.
- If you cannot remove the foreign material from the Inlet Valve, replace it.