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6

Fault code 6 — Loss phase detection fault (current imbalance)

Rheem · Air Handlers

What does 6 mean?

A phase loss has been detected, resulting in an imbalance in current. This points to potential compressor or control board problems.

Common Causes

  • Compressor phase lost
  • Bad control board components
  • Compressor insulation fault

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check compressor wire connections.

  2. 2

    Replace the main PCB if connections are good.

  3. 3

    Consider compressor replacement if the problem persists.

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