Truma Trumatic E 2400 E
The Trumatic E 2400 E is a fan-assisted gas space heater designed for installation in motor vehicles with natural gas engines (CNG). It provides reliable heating and ventilation capabilities, featuring dual power settings (full load and partial load) and operation permitted while the vehicle is in motion.
View official manual on manufacturer's site ↗Technical Specifications
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Possible Cause | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|---|
Nothing lights up when it's switched on | No operating voltage or device/vehicle fuse is defective. | — | Check the 12V/24V battery voltage and charge if needed, check every electrical plug connection, and check/replace the unit's or vehicle's fuses. | DIY Safe |
Green LED comes on, but heater does not operate | Either the control panel's temperature is set below room temperature, or a window above the cowl is open (window switch). | — | Turn the temperature up at the control panel, or close the window. | DIY Safe |
Red LED flashes 1x per second | A window above the cowl is open (window switch active), or voltage has dropped into the undervoltage range (12V: 10.9-10.5V, 24V: 21.8-20.7V). | — | Close the window or charge the battery. | DIY Safe |
Red LED flashes 3x per second | Voltage has risen into the overvoltage range (12V: 15.8-16.4V, 24V: 31.8-33.1V). | — | Check the battery voltage and whatever's supplying it, such as the charger. | DIY Safe |
Red LED illuminates approx. 30 seconds after switching on | Valves in gas supply line are closed, or combustion air infeed / exhaust outlet is sealed/blocked. | — | Open the gas supply valves, take off the cowl cover, and clear any dirt (slush, ice, leaves, etc.) from the openings. | DIY Safe |
The heater faults out after running for an extended period | Warm air outlets are blocked or circulated air intake is blocked. | — | Inspect individual outlet openings and remove any blockages from the circulated air intake. | DIY Safe |
Frequently Asked Questions
Q: Can the Trumatic E 2400 E be operated while the vehicle is in motion?
Yes - the Trumatic E has been tested and approved for use while driving. Its fan-assisted burner keeps working reliably even in strong wind, as long as any national rules on running gas appliances while driving are followed.
Q: What should I do if a failure occurs and the red LED lights up?
Clear the fault by restarting the system from the control panel, or by opening and closing a window wired to a window switch. Contact Truma Service if it persists.
Q: Are there specific gas requirements for this heater?
Yes, this unit is designed for natural gas systems (from the vehicle-internal CNG system) and requires an operating pressure of exactly 50 mbar.