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Convection Steam Oven (Knob Control) Water Hardness Setting


  • Can the water hardness setting be changed on the Convection Steam Oven (CSO) with knob control?
  • How to set the water hardness on CSO prior to serial number 13543126
  • Change CSO water hardness setting


The water hardness setting can be changed through the user settings on a Convection Steam Oven (CSO) with knob control. For newer models with a touch control, refer to Convection Steam Oven (Touch Control) User Settings.

For instructions on testing the water hardness, including thresholds for each hardness level, refer to Convection Steam Oven Water Test Strips.

  1. With the oven off, press OK (control knob).
  2. Turn the knob to User Settings.
  3. Press OK.
  4. Turn the knob until Water Hardness appears.
  5. Press OK.
  6. Turn the knob to the appropriate hardness level.
  7. Press OK.

Refer to the product Use and Care Guide for further information.


Need further assistance? Contact Customer Care at 800.222.7820 or provide your information below and request a Customer Care representative contact you.

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