Samsung Washer 5C Error Code: Drain Failure Diagnosis for WF and WA Models

Your Samsung washer's 5C code means the control board commanded the drain pump to evacuate water but the tub level sensor detected no change after the timeout period (approximately 10 minutes on WF front-load models, 8 minutes on WA top-loaders). This is the same fault as the older 5E display — Samsung changed the nomenclature on models manufactured after 2017, though the underlying logic is identical.

On the seven-segment LED display, "5C" and "SC" can appear similar. If you see what looks like "SC," it is actually 5C — Samsung does not have a separate SC drain code for washers.

How Samsung's Drain System Works

Understanding the physical path water takes helps isolate where the blockage sits:

WF Front-Load (WF45R6100AW, WF50A8600AV, WF45T6000AW): Tub → short rubber sump hose → debris filter housing → drain pump (DC31-00054A) → external drain hose → standpipe or laundry sink

WA Top-Load (WA50R5400AW, WA52DG5500AV): Tub → internal hose → drain pump (DC31-00187A) → drain hose → standpipe

The critical difference: WF front-load models have a user-accessible debris filter between the tub and pump. WA top-loaders route directly to the pump with no intermediate filter — objects that enter the tub reach the pump impeller directly.

Emergency Water Removal Before Diagnosis

Before troubleshooting, you need the standing water out of the drum:

1. On WF models: Open the small rectangular access door at the lower-left front panel. Pull the small emergency drain hose, remove its plug, and drain into a shallow pan. Expect 1-3 gallons.
2. On WA models: No emergency drain exists. Disconnect the main drain hose from the standpipe, hold it lower than the tub, and let gravity drain into a bucket.
3. Lay towels around the base — residual water in the sump will leak when you open the filter or disconnect hoses.

Diagnosing the 5C Code by Symptom

Pump Is Completely Silent During Drain Phase

Start a drain-only cycle (press Spin Speed until "No Spin" shows, then Start). Listen at the lower-front of the machine:

• No sound at all: Either the pump motor winding has burned open (test with multimeter — should read 5-15 ohms across the two pump terminals) or the main PCB drain relay has failed. On WF45 and WF50 models, the relay is a common failure point after 5-7 years — humidity in laundry rooms corrodes the relay contacts on board DC92-01021B.
• Single click then silence: The control board fires the relay but the pump motor does not respond. Pump motor winding is open. Replace pump assembly DC31-00054A.

Pump Hums But Water Does Not Move

A humming pump with stationary water means the impeller cannot turn:

• Seized impeller bearing: Sacramento's hard water deposits calcium carbite on the pump shaft. The motor energizes but the impeller is locked. Remove the debris filter (WF models) and reach in — you should feel the impeller blades. Try spinning by hand. If frozen solid, the pump needs replacement.
• Foreign object jamming impeller: Coins (especially pennies), underwire from bras, hair ties, and small socks are the top offenders. On WF models, check through the filter cavity. On WA models, access from the bottom of the machine.

Pump Runs and Water Exits But 5C Still Appears

The pump evacuates water but the level sensor does not register the drop:

• Pressure switch hose disconnected or kinked: The water level sensor on Samsung washers uses a small air-filled tube running from the tub to the pressure switch on the control panel. If this tube is disconnected, kinked, or full of water/soap residue, the switch cannot detect level changes. Inspect the tube routing — it runs from the side of the outer tub up to the rear-top of the machine.
• Standpipe siphon effect: If the drain hose is pushed too far into the standpipe (more than 8 inches), water siphons back into the tub during drain. The pump empties the tub, but siphoning refills it faster than the pump can keep up. Pull the hose to 6-8 inch insertion depth.

Part-by-Part Repair Guide

Debris Filter Cleaning (WF Models Only)

Frequency: Samsung recommends every 40 wash cycles. Monthly is realistic.

1. Open the access panel door at lower-left front.
2. Drain via the small emergency hose first.
3. Unscrew the filter cap counterclockwise — firm grip needed if mineral deposits have sealed it.
4. Pull the filter cylinder out. Common finds: coins, buttons, hair ties, pet hair mats, sand, gravel from work clothes.
5. Clean the filter mesh under running water. Use a toothbrush for stubborn lint.
6. Shine a flashlight into the filter cavity — check the pump impeller area for lodged items.
7. Reinstall finger-tight plus 1/4 turn. Under-tightening causes leaks; over-tightening cracks the housing.

Replacement filter cap (if threads are stripped): DC97-09928A — $12-$25.

Drain Pump Replacement

Part number by model series:

• WF45 / WF50 front-load: DC31-00054A ($35-$75)
• WA50 / WA52 top-load: DC31-00187A ($40-$80)
• WF42H / older front-load: DC31-00054D ($35-$70)

Procedure (WF front-load):

1. Unplug the washer. Drain residual water via emergency hose.
2. Remove the lower front panel (two Phillips screws per side, or one Torx T20 on newer models).
3. Place a towel under the pump.
4. Squeeze the spring clamps with channel-lock pliers and disconnect both rubber hoses from the pump.
5. Unplug the 2-pin electrical connector.
6. Remove the 3 mounting screws (Phillips or Torx T15).
7. Install the new pump in reverse order. Verify the impeller spins freely before reconnecting hoses.
8. Run a drain test before reinstalling the panel.

Drain Hose Replacement

Part: DC97-17998A (universal Samsung front-load drain hose) — $15-$35.

Replace if: kinked permanently, cracked, or internal buildup cannot be flushed. The corrugated interior traps lint and detergent residue over years.

Samsung Smart Diagnostics for 5C

Open SmartThings app → select your washer → tap Support → Smart Care. The app reads the error log via NFC (hold phone to the Smart Control label on the door) or Wi-Fi on connected models. Smart Care reports:

• How long the pump ran before timeout
• Whether the water level sensor detected any change
• Historical drain times (gradual increase indicates progressive clogging)

Cost Summary

Prevention

• Clean the debris filter monthly — this single step prevents 35% of all 5C occurrences on WF models
• Check pockets before loading — coins are the primary pump-killer
• Run Self Clean+ (or a hot empty cycle with 2 cups white vinegar) every 40 loads to flush residue from internal hoses
• Verify drain hose height: 24-36 inches above floor level at the standpipe entry point
• Do not push the drain hose more than 8 inches into the standpipe

When Professional Repair Is Necessary

Call a technician if:

• The pump is silent during drain and you confirmed 120V reaches the pump connector (requires multimeter at the connector during drain cycle — live voltage testing)
• The 5C code returns within one cycle after cleaning the filter and verifying the drain path
• You smell burning from the pump area — this indicates the motor winding is shorting internally before fully failing
• Water appears under the washer during drain — the pump housing may be cracked (common after a seized impeller strips the mounting tabs)

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Samsung washer stuck with 5C and standing water? Our technicians carry DC31-00054A pump assemblies for same-visit repair on WF45, WF50, and WA50 models. Schedule your repair →

When to Seek Professional Help for 5C

While many Samsung washer repairs are DIY-accessible, certain conditions warrant professional service for error 5C:

• The error returns immediately after attempted repair (misdiagnosis likely)
• Multiple error codes appear simultaneously (shared root cause needs systematic approach)
• The repair involves sealed systems, high-voltage components, or gas connections
• You lack the specific measuring tools needed for verification
• The appliance is under warranty (DIY repair may void coverage)

Professional diagnosis typically takes 15-30 minutes and costs $75-145. This fee is usually applied as credit toward repair cost if you proceed with service. Provide the technician with your complete model number, serial number, when 5C first appeared, and what you have already tried.