Understanding compressor fault codes

When a compressor breaks down, it rarely does so without warning. Modern air compressors come equipped with fault codes designed to relay critical information about the issue at hand. These codes act as an early warning system, helping operators diagnose problems quickly and potentially prevent costly downtime.

Below, we explore how fault codes can indicate common compressor failures, along with a couple of examples of what they might mean.

Common Compressor Fault Codes and What They Indicate

1. Overload Trip (Fault Code: OL or E01)

What it means: This fault code typically signals that the compressor motor is drawing too much current, which can be caused by excessive demand, blocked air filters, or electrical issues.

Possible causes:

A clogged air filter restricting airflow

A worn-out motor struggling under load

Low voltage or an unstable power supply

2. High Temperature Shutdown (Fault Code: HT or E02)

What it means: If the compressor is overheating, it will trigger a high-temperature fault code to prevent damage.

Possible causes:

Low oil levels in lubricated compressors

A failing cooling system, such as a blocked radiator or fan malfunction

Poor ventilation in the compressor room

The Importance of Addressing Fault Codes Promptly

Ignoring fault codes can lead to more severe failures, expensive repairs, and extended downtime. By understanding these alerts, operators can troubleshoot issues early, keeping their compressed air systems running efficiently.

If you’re experiencing persistent fault codes and need professional assistance, Airmass Limited can help. We provide expert diagnostics, repairs, and maintenance to keep your air compressor in top condition. Contact us today for support!