ERR TIME
US Water Systems Real-Time Clock / Backup Power Fault

Display shows ERR TIME or clock will not keep correct time

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Possible Causes

Failed clock circuit on board, Internal backup capacitor failure, Frequent power interruptions, Incorrect time format setting

How to Fix / Troubleshooting

Safety: Low-voltage work only; unplug before removing the cover.

  • Set time correctly: Enter the time-setting mode and ensure AM/PM or 24-hour format is set correctly. Save settings properly.
  • Check for frequent outages: If your home experiences frequent power loss, consider using a small UPS (uninterruptible power supply) for the softener.
  • Inspect board: Remove the cover and look for any obvious damage near the clock or backup capacitor area. There is usually no user-serviceable part; if damaged, replace the board.
  • Replace control board: If the time drifts significantly within a day or two despite stable power, the clock circuit is likely defective and the board should be replaced.
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Repair Difficulty

Easy 2/5

Required Part

Electronic Control Board
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