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In phs seq

In phs seq — Incorrect incoming electrical phase order

Nibe · Ground Source Heat Pumps

What does In phs seq mean?

The heat pump detects that the phase order of the incoming electrical supply is wrong. This can block the compressor.

Common Causes

  • Phases connected in the wrong order

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the electrical phases are connected in the correct order.

  2. 2

    Contact a qualified electrician if unsure.

Browse all codes in this manual (49)
Verified technical data. Last updated: April 2026

Related Faults

Alarm bell in displayAlarm bell symbol in display — Malfunction detectedAlarm no. 54Alarm no. 54 — Motor protection breaker trippedAlarm numbers 70-99Alarm numbers 70-99 — Communication interrupted
Source: Nibe Ground Source Heat Pumps
Open Manual (Page 48)Search more codes in this manual