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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.

H999

Integral Output Power Exceeded (Pout&1MWh)

Schindler · Altivar 212 Variable Frequency Drive

What does H999 mean?

This alarm indicates that the integral output power value, displayed as Pout&1MWh, has exceeded 999.99 kWh, indicating a data overflow.

Common Causes

  • Integral output power has exceeded 999.99 kWh.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Press and hold down the ENT key for 3 seconds or more when power is off or when the input terminal function CKWH is turned on or displayed to clear the value.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

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Source: Schindler Altivar 212 Variable Frequency Drive
Open Manual (Page 184)Search more codes in this manual