Atlas Copco Compressor Fault - Code 1554

If you are operating an Atlas Copco GA (or similar oil-injected screw compressor) and the display suddenly shows Fault Code 1554 , your machine has likely tripped due to an Element Outlet Temperature that is too high . This is a critical safety shutdown designed to prevent damage to the airend (screw element).

| Cause | Check | Solution | | :--- | :--- | :--- | | | Sight glass shows no oil or bubbles. | Refill with genuine Atlas Copco oil (RXD, PD, etc.). Check for leaks. | | 2. Clogged Oil Filter | High pressure drop across filter. | Replace oil filter (kit # 2901-0713-00 depending on model). | | 3. Failed Cooling Fan (Air-cooled) | Fan not spinning. Radiator fins blocked. | Replace fan motor. Clean radiator with compressed air (reverse flow). | | 4. Thermostatic Valve (BV) stuck | Pipe from cooler to element is cold while element is hot. | Replace bypass valve cartridge. | | 5. Faulty PT1000 Sensor | Sensor resistance is erratic. | Measure resistance (should be ~1000 ohms at 0°C). Replace sensor. | atlas copco compressor fault code 1554

If you have replaced the oil, filters, and cleaned the cooler and the code persists, the Airend (screw element) may be failing mechanically (worn bearings causing internal friction). Contact a certified Atlas Copco service technician for a vibration analysis. Disclaimer: Always refer to your specific machine's service manual. Lock out/tag out power before performing any maintenance. If you are operating an Atlas Copco GA