Miele Dishwasher Error Code F14

F14 on a Miele dishwasher signals a water intake fault at the heater pressure switch. After the dishwasher completes a water intake step and starts the circulation pump, the heater pressure switch does not detect sufficient water pressure. The machine stops to protect the pump and heating element from running without adequate water. This is most commonly caused by a siphoning issue with the drain connection rather than a failed internal part.

You should not continue running the dishwasher while the F14 error is active. The error indicates the system cannot confirm adequate water is present during the heating phase, which poses a risk of damage to both the circulation pump and the heating element if they operate dry. Stop use and address the underlying cause before running another cycle.

Repair costs vary significantly depending on the cause. If the fix involves only adjusting the drain connection or cutting the vent valve cap, there may be no parts cost at all. Cleaning the filter assembly is also a no-cost repair. If the inlet valve or heater pressure switch needs replacement, parts and labor combined could range from around 100 to 350 dollars or more, depending on your location and whether you hire a technician.

Start by checking whether your drain connection is positioned lower than the bottom basket rollers, as this creates a siphon that continuously empties the tub. If so, locate the vent valve and cut off its cap to introduce an air break in the drain line. If that does not resolve the error, clean the filter assembly, inspect the water supply and inlet valve, and check the circulation pump for obstructions. If the problem persists, the heater pressure switch itself may need to be tested and replaced.

A reset may temporarily clear the F14 code, but if the underlying condition has not been corrected, the error will return as soon as the machine attempts another fill and circulation sequence. Address the root cause first, such as fixing the drain connection or cleaning the filters, before attempting a reset. A reset alone is not a repair.