Samsung WF337AA XAA Series, Troubleshooting Manual

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Door Lock Check Test 1 Test 2
Connector CN10 Pin 7 (Sky Blue) and CN5 Pin 3
(Blue) When Door is Locked or Unlocked
there is a pulse of 120VAC for a few
milliseconds. With Power Off, the resistance
between these pins will be between
56 - 62
Ω
Door Unlock Check Test 1 Test 2
Connector CN10 Pin 8 (White) and CN5 Pin 3
(Blue) When Door is Locked or Unlocked
there is a pulse of 120VAC for a few
milliseconds. With Power Off, the resistance
between these pins will be
between 56 - 62
Ω
Drain Motor Check Test 1 Test 2
Connector CN10 Pin 6 (Black) and CN5 Pin 3
(Blue) 120VAC with the pump On and 0VAC
with the pump off Power Off, the resistance should be
13.9
Ω
Water Valve Check
Test 1 Test 2
Connector CN5 Pin 3 (Blue) to CN10 Pin 4 (Pink),
Pin 2 (Red) , Pin 3 (Yellow), Pin 1 (Blue) 120VAC with the Valve On and 0VAC
with the Valve off Power Off, resistance at valve is
from 1202
Ω - 1245 Ω
Heater Relay Check
Test 1 Test 2
Connector CN5 Pin 3 (Blue) and RY9 (heater re-
lay) Pin 1 (Red) 120VAC with the Heater On and 0VAC
with the Heater off Power Off, heater resistance is
16.6
Ω
Error Type Error Mode Details
LED LCD
Water Level Sensor
LE
8 Check the Hose where the sensor is connected, may be loose,
pinched, damaged or clogged. Also check the sensor it may be
disconnected or defective. The Main PCB may also be defective
Motor Drive Error or
Hall Sensor error
3E Check the motor drive connector, it may be loose. The hall sensor
may be disconnected, loose or damaged . Check for a foreign ob-
ject inside the motor or motor damage. The stator might be loose
or damaged. The drum might be overloaded from too many
clothes or the relay or PCB might be defective.
E3
bE
25
Water Supply
Error
nF
3 Check the water valve wiring harness.
Check whether the water supply valve is clogged with foreign ma-
terial and whether water is supplied properly.
Check for reversed fill hoses
Check water temperature, if sensed as higher than 50 ˚ C in the
Wool or Lingerie cycle it will create error.
Check the relays, if they operate correctly replace the Main PCB.
Fill Hoses Reversed nF1 Correct Hot/Cold hose connections
System Error SF1
SF2
SF3 Replace PCB