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9

Fault code 9 — PFC fault (edge)

Rheem · Air Handlers

What does 9 mean?

A fault related to the Power Factor Correction (PFC) circuit has been detected at the edge level.

Common Causes

  • Power supply is not stable
  • Instantaneous power failure
  • Control board failure

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the stability and voltage of the power supply.

  2. 2

    Check for any recent power interruptions.

  3. 3

    If the power supply is adequate, the control board may be faulty.

Browse all codes in this manual (51)
Verified technical data. Last updated: April 2026

Related Faults

1Fault code 1 — Inverter DC voltage overload fault10Fault code 10 — PFC fault (level)11Fault code 11 — PFC power detection of failure
Source: Rheem Air Handlers
Open Manual (Page 186)Search more codes in this manual