Samsung Washer F5 Error Code: Causes and Fixes
Quick answer: Control board communication fault
What you’ll notice
Washer stops mid-cycle; control board reports a communication fault with a secondary module.
Samsung
Washer
Code F5
medium severity
Samsung models: Samsung front-load pump filters (WF series) are behind a push-open panel at the lower-right of the front fascia; top-load models (WA series) have no user-accessible filter. The SmartThings app can read active error codes on Wi-Fi-enabled models and often clarifies which sub-component triggered the fault.
Common causes
- Loose wiring harness connector between the main board and motor/sensor board
- Power-state corruption from a surge or abrupt power cut
- Control board failure
Step-by-step fix
- Unplug for 5 minutes then restart — clears transient faults in most cases.
- If recurring, unplug, open the top/back panel, and reseat all harness connectors.
- Check for any visible burn marks on the control board.
Tools you may need
Screwdriver set
Prevention
- Use a surge-protected power strip.
- Avoid cutting power mid-cycle.
When to stop DIY
Call a technician if the error appears on power-on with no cycle running — the control board may require replacement.
FAQ
What does F5 mean on Samsung washer?
F5 usually indicates: Control board communication fault.
Can I keep using the appliance with F5?
Use caution. Severity is medium. Call a technician if the error appears on power-on with no cycle running — the control board may require replacement.
How long does this fix usually take?
Typical first-pass troubleshooting takes 5 minutes (power cycle); 30 minutes (harness check).