OEM Service Manual: Trane RTHD Water-Cooled Helical Rotary Chiller Service Manual (SVR-SVN002-EN). Trane CH530 Controls manual also required.
30 codes
| Fault Code | Alarm Description | Severity | Probable Causes | Action |
|---|---|---|---|---|
| 398 | BAS Communication Lost | Warning | BAS network cable fault | View Details → |
| 390 | Communication Lost - Main CCN to Starter | Warning | CCN cable between main board and starter damaged | View Details → |
| 2E6 | High Condenser Refrigerant Temperature | Warning | Condenser water flow too low | View Details → |
| 5EF | System Watchdog | Warning | Control system software crash | View Details → |
| FD | Emergency Stop | Critical | E-stop button activated | View Details → |
| ED | Evaporator Water Flow Lost | Warning | Chilled water pump failure | View Details → |
| C5 | Low Chilled Water Temp: Unit Off | Warning | Setpoint too low | View Details → |
| C6 | Low Chilled Water Temp: Unit On | Warning | Low flow during operation | View Details → |
| B5 | Low Suction Refrigerant Pressure - Circuit 1 | Warning | Low refrigerant charge | View Details → |
| BA | Motor Current Overload - Compressor 1A | Warning | Bearing failure | View Details → |
| F5 | High Pressure Cutout - Compressor 1A | Critical | Condenser fouling | View Details → |
| 198 | Low Oil Flow - Compressor 1A | Critical | Oil filter clogged | View Details → |
| 1DE | High Oil Temperature - Compressor 1A | Warning | Oil cooler fouled | View Details → |
| 2E7 | High Condenser Refrigerant Temperature - Circuit 2 | Warning | Condenser water flow too low | View Details → |
| 390B | Communication Lost - Main CCN to Starter Circuit B | Warning | CCN cable to starter B damaged | View Details → |
| 5EE | Watchdog - Circuit 2 | Warning | Circuit 2 controller software crash | View Details → |
| B6 | Low Suction Refrigerant Pressure - Circuit 2 | Warning | Low refrigerant on circuit 2 | View Details → |
| F6 | High Pressure Cutout - Compressor 2A | Critical | Condenser fouling | View Details → |
| 199B | Low Oil Flow - Compressor 2A | Critical | Oil filter clogged on circuit 2 | View Details → |
| 1DF | High Oil Temperature - Compressor 2A | Warning | Oil cooler on circuit 2 fouled | View Details → |
| 392 | Analog Input Out of Range | Warning | Analog sensor signal outside expected range | View Details → |
| 393 | Analog Output Failure | Warning | Analog output channel failure on control board | View Details → |
| 397 | Frozen Condenser Water Sensor | Warning | Condenser water temperature sensor reading below freezing | View Details → |
| 399 | Operator Interface Communication Lost | Warning | OIT communication cable disconnected | View Details → |
| 3A0 | Compressor Vibration Alarm | Warning | Compressor mounting bolts loose | View Details → |
| D1 | Suction Pressure Sensor - Circuit 1 | Warning | Sensor failure | View Details → |
| D2 | Discharge Pressure Sensor - Circuit 1 | Warning | Sensor failure | View Details → |
| D3 | Suction Pressure Sensor - Circuit 2 | Warning | Sensor failure | View Details → |
| D4 | Discharge Pressure Sensor - Circuit 2 | Warning | Sensor failure | View Details → |
| D5 | Oil Pressure Sensor | Warning | Sensor failure | View Details → |
Disclaimer: All Trane RTHD fault code data is for reference only. Do not use this information to replace certified professional HVAC technician judgment. Always refer to original OEM official service manual.