Kaeser compressor temperature sensor
Match sensor type, connector, and resistance curve before replacing a final compression temperature or sensor fault.
$20-$100
Check price
Kaeser Compressor Fault Codes - SIGMA Control 2 Quick Reference
Kaeser screw compressors with SIGMA Control and SIGMA CONTROL 2 controllers report warnings and shutdowns for temperature, pressure, service intervals, and sensor faults. The controller panel may show text alarms rather than short numeric codes, depending on generation. If you searched for “Kaeser compressor fault code 2,” confirm whether the machine has the SIGMA CONTROL 2 controller, then use the alarm text on the display.
| Alarm | Meaning | Quick Fix |
|---|---|---|
| Final Compression Temp High | Compressor too hot | Clean coolers; check oil |
| Motor Protection Trip | Main motor overload | Check load and contactor |
| Sensor Fault | Bad temp/pressure sensor | Inspect and replace sensor |
| Dryer Fault | Integrated dryer issue | Check condenser and dryer circuit |
| Service Due | Scheduled maintenance due | Perform PM and reset counter |
| Emergency Stop | E-stop active | Reset and inspect loop |
| Pressure Switch Fault | Control pressure issue | Check transducer and loading controls |
| Phase Fault | Supply power issue | Check voltage balance |
Most Common Faults
Final Compression Temperature High
Kaeser packages are efficient, but they still depend on clean cooling surfaces and correct oil flow. Blow out coolers, verify cabinet fans run properly, and confirm the oil level is correct with the unit in the proper state per Kaeser instructions.
Sensor Fault
Before replacing expensive valves or motors, compare the controller reading to an independent gauge or temperature probe. Kaeser sensor failures are common enough that a bad sensor should always be on the suspect list.
Dryer Fault
If the package has an integrated refrigerated dryer, the dryer can trip independently of the compressor. Check condenser cleanliness, ambient temperature, and whether the dryer fan is running.
Parts Often Needed
| Part | Notes |
|---|---|
| Temperature or pressure sensor | Common controller alarm source |
| Service kit | Oil, separator, filters |
| Cabinet fan | Overheat alarms often trace here |
| Dryer condenser fan / contactor | On integrated dryer faults |
SIGMA CONTROL 2 Notes
For second-generation controllers, use the Kaeser SIGMA CONTROL 2 fault-code guide to separate shutdown, warning, and maintenance messages before ordering parts. That page covers final compression temperature, dryer faults, service required, pressure sensors, differential pressure, communication faults, and phase alarms in more detail.
Focused Parts Searches
Before ordering, match the compressor part to the package model, controller generation, electrical rating, and failure symptom.
- Kaeser compressor temperature sensor
- Kaeser compressor pressure transducer
- Kaeser compressor service kit
- Kaeser compressor cabinet cooling fan
- Kaeser dryer condenser fan
When to Call a Pro
Kaeser Sigma Control diagnostics are much easier with factory documentation and service access. If alarms persist after PM work, involve a Kaeser-trained compressor tech before the airend is damaged.