How to fix Whirlpool Duet steam washer F35 errors
F35 ANALOG PRESSURE SENSOR FAILURE
... F35 codes. That code seems to relate to the steam process.
If this failure is displayed, there is any malfunction of the steamer
component detected by the Steamer Electronic Board.
1) Check if pressure hose is fi xed correctly.
2) Check if the airtrap is not blocked.
3) Check if the hose is not blocked.
If all the above fails, you need to replace the pressure switch:
Click to buy. One year warranty.
Source: Whirlpool Duet Steam F35 errors