Display shows ERR6 and time-of-day clock does not keep time

Safety first: Disconnect power before inspecting electrical components.

Steps to check:

• 1. Verify power source: Confirm the outlet has stable 120V AC using a meter or by plugging in another device. Avoid using switched or GFCI outlets that may cut power unexpectedly.
• 2. Inspect transformer: Whirlpool softeners typically use an external low-voltage transformer. Check for warmth and hum during operation. Use a multimeter to verify the low-voltage output matches the rating on the label. Replace if no output or significantly low.
• 3. Check backup battery (if present): Some controls have a small coin-cell or rechargeable battery for clock backup. Replace if accessible and specified by Whirlpool.
• 4. Replace control board: If power and transformer are good but ERR6 persists and the clock drifts or resets, the internal clock circuit on the board is likely faulty and the board should be replaced.

When to call a technician: If you are not comfortable testing live voltage or replacing the transformer, contact a professional.