Epson EcoTank ET-4850 error W-12: Paper fix
The Epson EcoTank ET-4850 error W-12 indicates a paper feed problem. The printer's internal sensor has failed to detect a sheet being pulled from the input tray. This halt is meant to prevent further damage to the feeding rollers and printer mechanism. This guide provides steps for immediate resolution.
Common causes
- 1Dirty rollers: Dust coating reducing friction.
- 2Damp paper: Sticking sheets in the tray.
- 3Obstruction: Tiny paper scraps hiding in the path.
- 4Overloading: Tray packed beyond its rated capacity.
Solutions
Diagnóstico rápido
If the rollers move but the paper doesn't catch, they need cleaning. If you hear a grinding noise, a foreign object is likely stuck in the tray path.Solución paso a paso
- Empty: Remove all paper from the tray.
- Scan: Look for tiny debris in the feed path.
- Clean: Wipe grey rubber feed rollers with a moist (not wet) cloth.
- Reload: Reinsert fresh, standard-weight paper.
Prevención y mantenimiento
Don't overfill the paper tray. Clean the feeding rollers every few months using a soft, lint-free cloth to ensure they maintain good grip.Cuándo llamar a un técnico
If the rollers are spotless and don't feed any paper even after multiple attempts, the internal feed motor or sensor is likely broken.Ficha técnica del equipo
- Technology: Inkjet (EcoTank)
- Speed: 15.5 ipm
- Connectivity: USB / Wi-Fi / Ethernet
- Capacity: 250 sheets
- Consumibles: 502 series ink
- Recommended usage: Home & Small Office
- Official drivers / firmware
Frequently asked questions
The W-12 error means the printer is failing to pull paper from the input tray, typically due to debris or dirty rollers.
Avoid overly thick, damp, or wrinkled paper. Stick to standard 80g/m² paper to keep feeding mechanism reliable.
Resetting works only if there is no physical debris. If a small scrap is stuck, it will re-trigger the error immediately.
Always use genuine 502 series ink to maintain nozzle health and prevent software-driven maintenance errors.