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T180

T180 — Loss of communication with the Economizer Actuator

Carrier · Energy Recovery Ventilators

What does T180 mean?

There is no communication with the economizer actuator, meaning it will not operate.

Common Causes

  • Communication wiring problem with the actuator

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the communication wiring connecting to the economizer actuator.

  2. 2

    Ensure the actuator is receiving power and data signals.

  3. 3

    Reset the unit after inspecting the wiring.

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

Related Faults

1 Fault CodeFault Code 1 — OVERCURRENT10 Fault CodeFault Code 10 — PANEL LOSS11 Fault Code11 Fault Code — ID RUN FAIL
Source: Carrier Energy Recovery Ventilators
Open Manual (Page 47)Search more codes in this manual