Keurig 'Prime' error

What this error means

'Prime' means water isn't flowing from the reservoir into the pump. Documented causes: a misseated reservoir (most common — it just needs a firm reseat), a clogged screen/valve at the reservoir base, or scale and debris further in.

Symptoms

• 'Prime' on the display
• Brew attempts abort
• Often after refilling or moving the machine

Try this first (safe DIY steps)

1. Remove the reservoir and reseat it firmly — listen for it settling onto the valve
2. Wash the reservoir; clear the exit screen at its base under running water
3. Clean the needles (paperclip method) and run water-only brews
4. Persistent? Descale

Safety: power off before any physical intervention. Never bypass covers or interlocks — fuser areas run hot enough to burn.

When to call a technician

No — a Prime that survives all the above on a consumer unit means replacement.