Display shows E6 and the coffee maker beeps without starting, often when using the programmable timer or auto-brew feature.

Safety first: Unplug the coffee maker before extended troubleshooting.

• Clear timer settings: Cancel any programmed brew times. On most Insignia models, press and hold the program or auto button for several seconds to clear stored times (refer to your user manual for exact steps).
• Reset the clock: Set the time again from scratch. Incorrect or incomplete time settings can sometimes trigger E6 on timer start.
• Factory reset (if available): Some models support a full reset by holding down the power and program buttons together for 10–15 seconds while plugging in. Check your manual before attempting.
• Test manual brew: Try starting a brew cycle manually. If manual brewing works but timer mode always shows E6, the timer circuit on the control board is likely failing.

Persistent E6 errors usually require control board replacement. Because this involves mains wiring, consider professional service.