Truma Trumatic E 2400
The Trumatic E 2400 is a liquid gas-powered forced-air space heater designed for installation in vehicles such as caravans, motorhomes, boats, and commercial vehicles. It provides reliable heating and ventilation with automatic burner control and can be operated while driving when installed with the appropriate safety shut-off device.
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 |
|---|---|---|---|---|
No LED lights up after switching on | No operating voltage or blown appliance/vehicle fuse. | — | Charge the 12V/24V battery if needed, check every electrical plug connection, and check/replace the appliance's or vehicle's fuses. | DIY Safe |
Green LED lights up, but heater does not work | The temperature set on the control unit is lower than the ambient temperature. | — | Increase the target room temperature setting on the control unit. | DIY Safe |
Red LED flashes 1 time per second | Window above the chimney is open (window switch activated). | — | Close the window. | DIY Safe |
Red LED flashes 3 times per second | Low voltage (undervoltage) or high voltage (overvoltage) range. | — | Charge the battery or check the battery voltage and power sources (e.g., charger). | DIY Safe |
Red LED turns on approx. 30 seconds after switching on | Either the gas bottle/quick-acting valve is closed, or the combustion air intake/exhaust outlet is blocked. | — | Open the gas supply valves, then take off the chimney cap and check for dirt (slush, ice, leaves, etc.). | DIY Safe |
Heater switches to failure after longer operating time | Hot air outlets blocked, circulating air intake blocked, or gas pressure regulator frozen. | — | Check individual outlet openings; clear blockages in the circulating air intake; use the regulator heater (EisEx). | DIY Safe |
No LED lights up after switching on | No operating voltage or device/vehicle fuse is defective. | — | Check the 12V/24V battery voltage and charge if needed, and check every electrical plug connection and fuse. | DIY Safe |
Green LED lights up, but heater does not operate | The control panel's temperature setting is below the current room temperature. | — | Turn the temperature setting up at the control panel. | DIY Safe |
Red LED flashes 1x per second | Window above the cowl is open (triggered via window switch). | — | Close the window. | DIY Safe |
Red LED flashes 3x per second | Undervoltage range (12V: 10.9V - 10.5V) or overvoltage range (12V: 15.8V - 16.4V). | — | Charge the battery, or check its voltage along with whatever's supplying it, such as the charger. | DIY Safe |
Red LED comes on approx. 30 sec. after switching on | Gas cylinder or quick-acting valve closed, or combustion air intake/exhaust outlet sealed. | — | Open the gas supply valves, take off the cowl cover, and check openings for dirt. | DIY Safe |
Heater switches to failure after a longer period of operation | Either the warm air outlets are blocked, the circulated air intake is blocked, or the gas pressure regulator has iced up. | — | Check each outlet opening individually, clear any blockage from the circulated air intake, or fit a regulator heater (EisEx). | DIY Safe |
Frequently Asked Questions
Q: Can the Trumatic E 2400 be operated while driving?
Yes, the Trumatic E is approved for use while travelling. On motorhomes, Directive 2004/78/EC requires a safety shut-off device - Truma's MonoControl CS is one example.
Q: What should I do if there is a gas leak or gas odor?
Extinguish all open flames, do not smoke, switch off all appliances, close the gas cylinder, open doors and windows, do not operate electrical switches, and have the complete system checked by a specialist.
Q: What type of gas and operating pressure are required?
The heater operates on liquefied gas (propane/butan) at a nominal operating pressure of 30 mbar.
Q: What type of gas and operating pressure must be used?
Liquid gas (propane or butane) with an operating pressure of 30 mbar must be used, corresponding to the device type plate.