# Coffee machine (Brewmaster 3000)

## Descaling
Descale every 2 months, or when the orange light blinks. Mix 1 part white vinegar with 2 parts water,
fill the tank, and run the "Clean" cycle twice. Then run two full tanks of plain water to rinse.

## Error codes
- E1: water tank empty or not seated properly. Reseat the tank until it clicks.
- E4: grinder jammed. Unplug, remove the bean hopper, and clear stuck beans with the brush.

## Warranty
Two-year warranty from purchase date (bought March 2025). Receipt is in the "Receipts" folder on Drive.