LWL

Low Water Level (Digital Input)

Yaskawa · iQpump1000 AC Drive

What does LWL mean?

The digital input configured for “Low Water Level” (H1-oo = 8F) is active. This fault indicates that the physical water level is low, the switch is faulty, or the input parameter P1-30 is incorrectly configured.

Common Causes

  • The Low Water Level switch is activated.
  • The Low Water Level switch is defective.
  • P1-30 (Low Water Digital Input Configuration) is programmed incorrectly.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Raise the water level.

  2. 2

    Adjust the Low Water Level switch physically.

  3. 3

    Verify parameter P1-30 (Low Water Digital Input Configuration) is correctly programmed.

Browse all codes in this manual (45)
Verified technical data. Last updated: March 2026

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