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CF

CF — Control Fault: Corrupted Data

Carrier · 38AP Air Handler

What does CF mean?

An Electronic Programming Module (EPM) with corrupted data has been installed, or the EPM is blank. A factory reset is needed.

Common Causes

  • EPM is blank or has corrupted data

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Perform a factory reset using Parameter P48 - PROGRAM SELECTION.

  2. 2

    If the issue persists after reset, the EPM may need to be replaced.

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

Related Faults

A051A051 — Circuit A, Compressor 1 Stuck On Failure AlarmA052A052 — Circuit A, Compressor 2 Stuck On Failure AlarmA053A053 — Circuit A, Compressor 3 Stuck On Failure Alarm
Source: Carrier 38AP Air Handler
Open Manual (Page 154)Search more codes in this manual