Truma S 3004 / S 5004
The Truma S 3004 and S 5004 are gas-powered space heaters designed for caravans and mobile homes, providing efficient interior heating and warm air distribution via natural convection or optional warm air fans. They utilize a reliable battery-powered automatic ignitor and feature adjustable thermostatic temperature controls.
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 |
|---|---|---|---|---|
Auto ignitor without function | No ignition sparks heard or fewer than two sparks per second during start-up due to battery or contact issues. | — | Check and replace the battery if necessary, verify installation polarity, and clean oxidized battery contacts. | DIY Safe |
No flame | The auto ignitor functions, but no flame is produced due to a disruption in the gas supply. | — | Check gas cylinder fill level, open cylinder and appliance valves, verify/reset hose rupture protection and crash sensors, and check gas filters for oil contamination. | DIY Safe |
Occasionally no gas at temperatures below +10 °C | Butane is unsuitable for heating at temperatures below +10 °C. | — | Use propane and switch on or retrofit the EisEx regulator heater. | DIY Safe |
Heater no longer heats properly | Reduced heating performance or blocked airflow. | — | Check the chimney opening for obstructions such as snow and retrofit a chimney extension if needed; remove carpets or obstructions blocking airflow in front of the heater. | DIY Safe |
Automatic igniter not working | Automatic igniter is not working or no ignition sparks are heard. | — | Check the battery, verify the correct polarity (plus/minus), and clean any corrosion on the battery contact points. | DIY Safe |
No flame | Automatic igniter operates, but no flame is formed. | — | Check gas cylinder filling level, open cylinder valve, reset hose rupture protection if fitted, check/replace gas filter, and ensure the crash sensor or device valve is open. | DIY Safe |
Gas supply interruption at low temperatures | Butane is not suitable for heating at temperatures below +10 °C. | — | Use propane and switch on the EisEx regulator heating (if available). | DIY Safe |
Heater malfunction | Heater is not operating correctly due to blocked flues or obstructions. | — | Check whether the flue opening is blocked (e.g. by snow) and remove any carpets or obstructions from in front of the heater. | DIY Safe |
Frequently Asked Questions
Q: I can smell gas in the vehicle - what should I do?
Remove every ignition source: put out open flames, don't use electrical switches, phones or radios, and don't start the engine. Open the windows and doors, get everyone out, turn off the gas cylinders, and have experts check and repair the whole gas system.
Q: Can the heater be operated while driving?
Yes, as long as a safety shut-off device is fitted (such as a Truma MonoControl CS or DuoControl CS meeting UN ECE regulation 122) to stop gas escaping in an accident. Without one, the gas cylinder has to be turned off while travelling.
Q: How do I ignite the heater?
Turn on the gas at the cylinder, open the quick-acting valve, turn the knob to a thermostat setting between 1 and 5, and push it right down for up to 30 seconds while the auto-ignition sparks, watching for the flame through the mica window. Once it's lit, keep the knob held down for another 10-20 seconds.
Q: How do I turn on the Truma S 3004 / S 5004 heater?
Open the gas cylinder and quick-closing valve, turn the operating knob to a temperature setting between 1 and 5, press it down fully, and hold it for up to 30 seconds while ignition takes place automatically. Keep the knob pressed for another 10 to 20 seconds after the flame is established.
Q: What type of battery does the automatic igniter require?
Only use leak-proof 1.5 V AA-size (mignon, LR6/AM3) batteries rated for heat up to 70 °C - Truma part number 30030-99200.
Q: Can I dry clothes or towels on the heater?
No. To avoid overheating and fire hazards, the hot air outlets must never be blocked, and items such as laundry must not be hung on or in front of the heater.