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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

HWL

High Water Level

Yaskawa · iQpump1000

What does HWL mean?

The digital input configured for “High Water Level” (H1-oo = 90) is active. This fault indicates that the physical water level is high, or parameter P1-31 (High Water Digital Input Configuration) is programmed incorrectly.

Common Causes

  • The High Water Level switch is activated.
  • P1-31 (High Water Digital Input Configuration) is programmed incorrectly.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Lower the water level.

  2. 2

    Adjust the High Water Level switch physically.

  3. 3

    Verify parameter P1-31 (High Water Digital Input Configuration) is correctly programmed.

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

Related Faults

ACCUMAccumulated Level FaultAJFAnti-Jam FaultAUXFBPI Aux Lvl Loss (Wire-break detection for PI Aux Feedback Level)
Source: Yaskawa iQpump1000
Open Manual (Page 256)Search more codes in this manual