SAMSUNG WF6450S7W - WASHING MACHINE - TROUBLESHOOTING

CAUTION:

• As some electronic components are damaged by the charged static electricity from the resin part of wash machine or the human body, prepare the human body earth or remove the potential difference of the human body and wash machine by contacting the power supply plug when work contacting to PCB is executed.
• Since AC 220~240V is applied to the triac T1 and T2 on P.C.B, the electric shock may occur by touching and be careful that the strong and weak electricity are mixed.
• As the P.C.B assembly is designed for no trouble, do not replace the P.C.B assembly by the wrong diagnosis and follow the procedure of the trouble diagnosis when the micom is not operated normally.

NO	ITEM	CAUSE & TREATMENT
1	The power is not supplied	* Is the PCB connector connected well? * Is the voltage normal? * Is the power supply plug connected well? * Is the noise fi lter connected well? * Is the secondary output of the power supply transformation normal? * Is the fuse disconnected? (option) • If above points are not found, the PCB assembly is out of order. Replace it.
2	The water is not supplied	* Is the knob open? * Did you push START/PAUSE button after selecting the course? * Is the water supply valve connected well? * Is the winding of the water supply valve continuous? * Is the connection and operation of the pressure switch normal? • If above points are not found, the PCB assembly is out of order. Replace it.
3	The wash does not start though the water supply is stopped	* Is the connection and operation of the pressure switch normal? * Is the pressure switch hose damaged so that the air is leaked? * Is the pressure switch hose bent? * Check the operation of the water level switch. • If above points are not found, the PCB assembly is out of order. Replace it.
4	The drum does not rotate during washing.	* Is the belt connected well? * Is the winding of the motor continuous? (Rotor winding, stator winding, generator) * Is the motor protector normal? • If above points are not found, the PCB assembly is out of order. Replace it.
5	The drum rotates by one direction during washing. (The drum rotates to one direction for SPIN.)	* The PCB assembly is out of order. Replace it. (Inversion relay open trouble)
6	Drainage problem.	* Is the drainage hose bent? * Is the winding of the drainage pump continuous? * Is the drain fi lter clogged by the waste? • If above points are not found, the PCB assembly is out of order. Replace it.
7	Dehydration problem.	* The unbalance is detected. * Put in the laundry uniformly and start again.
8	Abnormal noise during SPIN.	* Is the pulley nut loosen? * Is the transport safety device removed? * Is the product installed on the level and stable place? (Little noise may be generated during the high-speed SPIN.)
9	Leak breaker or current/leak breaker is down during washing.	[When the leak breaker and current breaker is installed separately] * When the leak breaker is down, check and make the earth of the outlet. * When the current is down, the current is leaked. [Is the breaker down when the leak/current breaker is combined?] * Check the rated capacity of the current and leak breaker. The current breaker may be down due to the lack of the current when the wash machine and other apparatus are used.  In this case, execute the cold water wash to check whether the current capacity is lack.