Display shows ERR5 and unit will not initiate regeneration

Safety first: Unplug the softener before removing the control cover.

Steps to check:

• 1. Perform a hard reset: Unplug the unit for at least 10 minutes to allow capacitors to discharge. Plug back in and re-enter the time, hardness, and regeneration settings according to the Whirlpool manual.
• 2. Verify keypad operation: Press each button and confirm it responds on the display. If some keys do not respond or stick, the keypad or control panel may be defective.
• 3. Check for moisture: Inspect inside the control housing for condensation or salt dust. Gently clean with a dry cloth. Do not use water or cleaners on the board.
• 4. Replace control board: If ERR5 returns after reprogramming and the keypad is functional, replace the electronic control board with the correct Whirlpool part number.

When to call a technician: If you are unsure of the correct programming values (hardness, capacity, salt settings) or need to transfer settings from an old board, a technician can ensure proper configuration.