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2

Fault code 2 — Inverter DC low voltage fault

Rheem · Air Handlers

What does 2 mean?

The DC voltage in the inverter system is too low. This is often related to the power supply.

Common Causes

  • Power supply input is too low

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the power supply voltage.

  2. 2

    Ensure the power supply is stable and within the unit's operating range.

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