Samsung WF405ATPASU-A2 - Manual (Page 18)

18
TROUBLE DIAGNOSIS
• Read Lock Switch and PCB (CN2 & CN3). (Refer to PCB Connector Check.)
• Perform Quick Test Mode. Check Door Lock. Check the output voltage of Door Lock Coil.
If it reads 120V, change Door Lock Switch, and if not, change PCB. (Refer to PCB Connector Check.)
No Key Operation
• Option and Function buttons respond differently according to each cycle.
• Child Lock is being activated. To exit, hold down Soil Level Key and Signal Key simultaneously until it sends
out a beeping sound.
• When “End“ illuminates on the display, only Power button works. Press Power button and make new cycle
selections.
Will Not Drain
• Check for any kink on the drain hose. If any, straight it out.
• Check for any restriction in the drain hose.
• Close the door and press the Start/Pause Button. For safety reasons, the washer does not tumble or spin with
the door open.
• When it is freezing outside, check if it is frozen inside the drain hose.
• Check if the water level signal input is correct. Go to Board Input Test Mode.
• Go to Quick Test Mode and do Drain Pump Test.
• Check if there is any twist in the hose (the one between Tub and Drain Pump).
• Check if it reads AC 120V at the pump when a spin cycle is selected.
• Read the winding resistance of the pump motor. (14.2±7% Ohms)
• Check the pump at CN3(PIN3) on PCB. It should read AC 110~120V. (Refer to PCB Connector Check)
TROUBLE SHOOTING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
WARNING
WF405ATP-03144A-03_EN.indd 18 2013-1-28 18:41:56