Tripac Evolution Apu. Red Triangle – Over Heating

The Tripac Evolution APU is a popular auxiliary power unit used in trucks to provide heating, cooling, and electrical power when the main engine is turned off. However, like any mechanical system, it can encounter issues from time to time. One common problem that truck drivers may face with the Tripac Evolution APU is the appearance of a red triangle and an alarm code indicating overheating.

When the red triangle appears on the Tripac Evolution APU control panel, it is an indication that the unit has detected a high engine coolant temperature. This alarm code is a safety feature designed to protect the APU from potential damage caused by excessive heat. When the APU detects high coolant temperature, it will automatically shut down to prevent further overheating.

To diagnose the cause of the overheating issue, it is recommended to connect a laptop to the Tripac Evolution APU’s motherboard. By accessing the software on the motherboard, you can view real-time data and check for any fault codes. To do this, connect the laptop to the motherboard using the appropriate cord and access the software files.

Once you have accessed the software, navigate to the “Alarms” section to view the specific alarm code that is triggering the red triangle. In the case of overheating, the alarm code may indicate a high engine coolant temperature.

To troubleshoot the issue, you can start by checking the coolant level. If the coolant is low, it can cause the engine to overheat. Ensure that the coolant reservoir is filled to the appropriate level.

Next, inspect the temperature sensor. A faulty temperature sensor can provide inaccurate readings, leading to false alarms. If the sensor is malfunctioning, it may need to be replaced.

Another potential cause of overheating is a malfunctioning fan. The fan plays a crucial role in cooling the engine by circulating air. If the fan is not working properly, it can result in overheating. Check if the fan is seized up or if there is a blown fuse. If necessary, replace the fan or the fuse.

In some cases, the issue may not be resolved by these basic troubleshooting steps. If you have checked the coolant level, temperature sensor, and fan, and the problem persists, it is recommended to consult a professional technician or contact the manufacturer for further assistance. They will have the expertise to diagnose and resolve the issue effectively.

Remember, it is crucial to address the overheating issue promptly to prevent any potential damage to the Tripac Evolution APU. Regular maintenance and inspections can help identify and resolve problems before they escalate.

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