What does the F19 error code mean - Washing Machines

For Bosch and Neff washing machines, the F19 error means that the incoming water did not reach the desired temperature in the 'normal amount of time'. This could be due to a fault with the heating system, the sensor, or the communication between the sensor and the main control board.

The issue could also be due to insufficient hot water reaching the washer. Check that the inlet hose isn't kinked and that the hot water shut-off valve is open. Close the valve and remove the hose. Check and clean the filter at the washing machine inlet. Clean or replace the filter at the shut-off valve. Replace the hose only on the shut-off valve and place a bucket underneath it. Open the shut-off valve and check the water flow. Replace the hose if there is limited flow. (Some anti-flood hoses restrict the water pressure when they detect a small leak.) If you do not have good water flow with a new hose, check the flow from the valve itself. Replace the valve or fix other plumbing issues causing the restricted water flow.

If sufficient hot water is reaching the machine, then you have to find the fault in the heating system. If the washing machine is under warranty, contact the manufacturer. If you would like me to search for any available parts diagrams, please add a comment with the model number of the washer.

I hope this helps.

Cindy Wells