Encountering error codes on your TriPac APU system can be frustrating, especially when you’re on the road and relying on it for comfort and rest. Many drivers face the initial hurdle of locating the error code manual itself. Fortunately, we’ve compiled a straightforward guide to help you understand and address common TriPac Apu Error Codes, ensuring you can quickly diagnose and resolve issues.
TriPac HMI Controller uses specific alarm codes to communicate system malfunctions. Here’s a breakdown of the common error codes you might encounter:
EnG Error Code
The EnG code signals a failure within the “8” circuit. This is often triggered by a disruption in the engine reset circuit, potentially due to low oil pressure or excessively high coolant temperature. It’s also worth checking the Main Power On/Off Switch to ensure it is correctly positioned.
A less obvious, yet common cause for the EnG code, particularly after coolant system maintenance, is air trapped in the coolant lines. If the APU system wasn’t properly bled after a coolant drain or refill, air pockets can lead to this error.
AcS Error Code
The AcS error code indicates an issue within the air conditioning system. Typically, this arises from abnormal pressure levels, either excessively high discharge pressure or critically low pressure. In simpler terms, this often suggests your APU is low on refrigerant, commonly known as Freon, and requires recharging.
ALt Error Code
The ALt code points to a charging system malfunction. This alarm is activated if the system detects no output from the alternator after approximately 2 minutes of operation. This signifies a problem with the alternator itself or related charging circuitry.
Clearing TriPac APU Alarm Codes
To clear any of these alarm codes, the process is generally simple. Use the HMI Main Power Key to switch off the TriPac system completely. This reset should clear the active error code upon restarting, provided the underlying issue has been addressed.
Understanding these common TriPac APU error codes is the first step in effective troubleshooting. By recognizing the meaning of each code, you can quickly begin to diagnose the problem, whether it’s a simple fix like adding Freon or a more complex issue requiring professional attention. Keep this guide handy to swiftly interpret and respond to your TriPac APU’s alerts, minimizing downtime and maximizing your comfort on the road.
