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Thermo King APU (Auxiliary Power Unit) issues can range from starting problems and error codes to shutdowns and performance issues. Common problems include low oil levels, faulty starters, wiring issues, fuel-related problems, air filter or exhaust blockages, and cooling system issues. Regular maintenance, including oil changes, filter replacements, and checks for carbon buildup, can help prevent many of these issues.
Troubleshooting Steps:
- 1. Check Oil Level:Low oil levels can prevent the APU from starting or cause it to shut down.
- 2. Inspect Starter:Ensure the starter is functioning correctly. If not, it may need to be replaced.
- 3. Examine Wiring:Look for loose or damaged wiring connections that could be preventing proper electrical flow.
- 4. Verify Fuel Supply:Check the fuel level and ensure the fuel shutoff valve is open. Also, inspect the fuel filter for clogs.
- 5. Clean Air Filters:A clogged air filter can restrict airflow and cause the APU to shut down.
- 6. Cooling System Check:Ensure adequate coolant levels and look for any cooling system malfunctions.
- 7. Reset the APU:If the APU is in standby mode or experiencing a computer glitch, a reset may resolve the issue.
- 8. Consult an Expert:If troubleshooting steps don't resolve the problem, seek assistance from a qualified Thermo King technician.
Common Error Codes:
- Eng Code Alarm:This can indicate a problem with sensors or the electrical system, potentially preventing the unit from turning on or causing it to enter standby mode.
- ALT Code:This code, often seen with a red triangle warning, may point to issues with the alternator or other electrical components.
Maintenance Tips:
- Regular Oil Changes: Follow the recommended service schedule for oil changes and filter replacements.
- Carbon Buildup Check: Inspect for carbon buildup annually and clean as needed.
- Heat Element and Vaporizer Screen Replacement: Replace these components every two years or as needed.
We Provider service to thermo King apu's , In Brookshire Texas, Katy TX, Houston, TX, Sealy and sugarland Texas.