Samsung WA45M3100AW/A4 - Page 26

24 _ Troubleshooting
Symptom Check Code Countermeasure Troubleshooting Procedure Measurement Picture
Door Code
► HotLED
Flash
This may occur when the door switch is defective. This may occur when the main PCB is defective.
• CheckiftheseLEDashduringtheboiling
course.
• AstheseLEDashbecausethedooris
opened, close the door.
• Since 120V power is connected, check if
the power cord is disconnected or check the insulation status and repair it if necessary.
• If the main PBA door detection circuit is
defective, replace it.
1. Check the resistance for Reed
SW (Checking Part :White-Green Wire)
- Resistance:Approx0.2Ω
between the terminals of Reed SW.
► Hot&High
LED Flash
2. Check the resistance for Motor
(Checking Part : Black-Brown Wire)
- Resistance:33Ωto46Ωbetween
the terminals of Motor.
► Hot&Extra
High LED Flash
The door lock switch unit is not inserted. The door lock switch unit is damaged. The wire is disconnected. The door lock switch unit is defective. This may occur due to a defect of the main PCB.
• Check whether the door lock switch unit is
inserted.
• Check whether the door lock switch unit is
damaged.
• Check the disconnection of the wire. • If the door lock switch unit is defective,
replace it.
• If the main PCB is defective, replace it.
3. Check the resistance for Lock/
Unlock Contact (Checking Part : Lock White-Red Wire Unlock White-Blue Wire)
- Resistance: Resistance:
Approx0.2Ωbetweenthe
terminals of Contact.
Check the Door Lock/Unlock state.
► HotHigh
LED Flash
Temperature Sensor Code
► Hot&Mid
LED Flash
• Heater fault • Thermistor fault • Poor physical connection
• Check whether Thermistor is inserted. • Check whether Thermistor is damaged. • Check the disconnection of the wire. • If Thermistor is defective, replace it. • If the main PCB is defective, replace it.
Check Resistance for Thermistor (Checking part : Pin #3 and #9 of CN10) •Resistance:Approx47㏀ (at 25ºC) between the terminals of Thermistor.