Chefman Inaccurate Volume / Flow Meter Calibration Issue

Coffee maker brews less coffee than selected (e.g., selects 12 cups but only brews 8).

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Flow meter partially blocked by scale, Air in system causing miscount, Incorrect cup size setting, Control board miscalculation

Safety first: Unplug before cleaning.

Steps:

Confirm you have filled the reservoir with enough water for the selected brew size.
Descale the machine to restore accurate flow through the flow meter.
Run 2–3 full cycles with plain water to purge air and recalibrate flow counting.

If the issue persists, the flow meter or control PCB may be faulty and require replacement.

Medium 3/5

Flow Meter Assembly

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