Error Code OE

Drain Error

What This Means

Not fully drained within 10 minutes; Connectors at main PCB or drain pump loose or disconnected; Air dome and pressure hose clogged; Drain pump motor resistance out of range (should be 1-20 Ohm); Voltage at main PCB connectors NA4-1 BN and BL3-1 BK not 120 VAC ±5%; Kinked or clogged drain hose; Frozen drain hose; Foreign objects clogging drain pump filter; Foreign objects caught in pump impeller

How to Fix

1. 1

   Check if OE is displayed

2. 2

   Check connectors at main PCB and drain pump; if loose or disconnected, reconnect or repair

3. 3

   Press WASH/RINSE and DELAY START simultaneously; check if water level is less than 250

4. 4

   If YES: proceed to next step

5. 5

   If NO: check air dome and pressure hose for clogging; check pressure switch (test #2)

6. 6

   Measure resistance of drain pump motor (should be 1-20 Ohm); if out of range, replace DRAIN PUMP ASSEMBLY

7. 7

   Check voltage between NA4-1 BN and BL3-1 BK; should be 120 VAC ±5%; if not, replace MAIN PWB ASSEMBLY

8. 8

   To activate drain pump manually: turn on washer, press SPIN SPEED to select LOW, press START/PAUSE; drain pump energizes for several minutes at start of spin cycle

9. 9

   Always check external causes: kinked/clogged drain hose, frozen drain hose, foreign objects in pump filter, foreign objects in impeller

This Error Applies To

LG WM3700H Series Washers (2016) (2016–present)