Brew time is inconsistent between cycles (sometimes fast, sometimes slow)

Safety: Allow the unit to cool and unplug before internal inspection.

• Descale thoroughly: Perform a full descaling cycle to remove loose mineral deposits that may move and intermittently restrict flow.
• Flush system: Run multiple clean water cycles to clear any remaining debris and air pockets.
• Inspect one-way valve: Access the base of the reservoir and remove the check valve. Clean it thoroughly and ensure it moves freely. Replace if sticking.
• Check thermostats: If brew temperature or cycling seems erratic, test the brew thermostat and replace if its operation is inconsistent.