Codes __exclusive__: Boge Compressor Fault

A single E.10 every 6 months might be a dirty cooler. E.10 twice a week indicates imminent airend failure.

Fan motor is drawing too much power; check for blockages or electrical shorts. Compressor system pressure too high Boge Compressor Fault Codes

Codes can vary slightly. Example: On an AC2 controller, E.10 is high temp; on an AC4, it might read TEMP HI . Keep a PDF of your manual on a smartphone. A single E

On AC4/AC5, press Menu > Diagnostics > Fault History . Look for repeated codes and the running hours when they occurred. Compressor system pressure too high Codes can vary

| Code | Meaning | Likely Cause | Fix | |------|---------|--------------|-----| | | CAN/RS485 bus error | Wiring loose, termination missing | Check bus connectors, enable termination | | E 41 | Real-time clock failure | Battery on motherboard dead | Replace CR2032 battery on PCB | | E 42 | Parameter corruption / EEPROM error | Power surge, faulty memory | Reload factory parameters (requires service tool) | | E 50 | Emergency stop triggered | E-stop button pressed, wire broken | Release button, bridge/test E-stop circuit |

Electrical overload, poor ventilation, or motor bearing wear Fan motor fault Tripped fan motor overload or failed fan motor 5 System pressure too high

Boge systems utilize a multi-layered notification system to distinguish between minor maintenance needs and critical failures. Operating instructions - Sigma Compressor Inc.