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
Raise the water level.
- 2
Adjust the Low Water Level switch physically.
- 3
Verify parameter P1-30 (Low Water Digital Input Configuration) is correctly programmed.
Verified technical data. Last updated: March 2026
Related Faults
Source: Yaskawa iQpump1000 AC Drive