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77

Inverter Over Current Event 77

Carrier · Heat Pumps

What does 77 mean?

High current spikes have been measured by the inverter drive. The system will try to ride through these spikes and self-recover. Persistent over current trips will lead to Error 95 'High Current Lockout'. The system will reset after 15 minutes.

Common Causes

  • High Current Spikes in current measured by the Inverter drive
  • Possible damage to Inverter Drive

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    The system will attempt to self-recover from current spikes within 15 minutes.

  2. 2

    Ensure all electrical connections to the inverter are secure and free from damage.

  3. 3

    If this event is persistent, it may lead to Error 95; refer to troubleshooting for 'High Current Lockout'.

Browse all codes in this manual (40)
Verified technical data. Last updated: April 2026

Related Faults

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Source: Carrier Heat Pumps
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