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30

30 — Saturation error of Q axis current control integral

Rheem · Air Handlers

What does 30 mean?

This indicates a problem with the current control integral for the Q axis. Similar to code 29, it could be due to a sudden system overload, incorrect compressor parameters, or a failing control board.

Common Causes

  • System overload
  • Incorrect compressor parameters
  • Control board failure

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check if the system is operating normally.

  2. 2

    Ensure the stop valve is open.

  3. 3

    Replace the Main PCB.

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 187)Search more codes in this manual