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1 Fault Code

Fault Code 1 — OVERCURRENT

Carrier · Energy Recovery Ventilators

What does 1 Fault Code mean?

The output current is excessive. This means the motor is drawing more current than it should.

Common Causes

  • Excessive motor load
  • Insufficient acceleration time
  • Faulty motor
  • Faulty motor cables or connections

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check for excessive load on the motor.

  2. 2

    Adjust acceleration time parameters if they are too short.

  3. 3

    Inspect the motor for damage.

  4. 4

    Verify motor cables and connections are secure and undamaged.

  5. 5

    Reset the VFD after correcting the issue.

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

Related Faults

10 Fault CodeFault Code 10 — PANEL LOSS11 Fault Code11 Fault Code — ID RUN FAIL12 Fault Code12 Fault Code — MOTOR STALL
Source: Carrier Energy Recovery Ventilators
Open Manual (Page 126)Search more codes in this manual