Clothes dryer with its vent duct in a small laundry closet

Generic photo: Introspectivedsgn · Pexels License

Samsung washers & dryers: display codes vs information codes, SmartThings and Smart Care, and service-mode code history

Samsung splits codes into information codes (a user or installation condition such as swapped hot and cold hoses or an unlatched door) and real error codes. The same fault may read differently by generation: older machines used E-numbers or 4E-style codes, newer ones 4C-style, some top-loaders nF. Wi-Fi models push codes to SmartThings when they happen; Smart Care is a separate camera-based check that only reads its own test, not real codes. Many models also keep a stored-code list in a service mode whose buttons vary by model.

Cross-checked ~20 min easyBrands: Samsung

Before you start

Unplug before removing panels
Service-mode tests run the motor, pump and valves; keep the door closed and hands clear

Diagnostic steps

Unlock all 7 steps with expected values

Full library + AI assistant + the OnCall Tech app for iPhone & Android. $34.90, one time.

Get lifetime access

OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

More washers guides

Guide · Washer

Whirlpool family washers & dryers: reading F#E# codes, Service Diagnostic Mode and fault history

Whirlpool-family electronic laundry stores its last few faults as a pair: the F number names the system and the E number names the suspect part. Most knob-and-button consoles reach Service Diagnostic Mode by pressing three buttons in a set order three times in a row within a few seconds; newer touch consoles use a different entry. The exact buttons are on the tech sheet hidden in the console, so read it first and never guess.

8 steps ~15 mineasy

Guide · Washer

Washer routine service: tub-clean cycle, door boot, dispenser, pump filter and hoses (front and top load)

All the major brands build in a cleaning cycle and remind the user about once a month or every 20-40 loads: Whirlpool about every 30 cycles, LG after about 30 cycles ('tcL'), Samsung after 40 washes on front-loaders and 20 on top-loaders. A pro service adds what the cycle misses: the door boot, dispenser, drain pump filter on front-loaders and a hose inspection.

6 steps ~45 mineasy

Guide · Washer

Replacing a front-load washer door boot (bellows seal)

The door boot is held by an outer clamp at the cabinet front and an inner clamp on the tub. Remove the front panel on most models, release both clamps, align the new boot with the tub mark and reinstall the inner clamp first.

8 steps ~75 minmoderate