Truma Trumatic S 3002 P / S 3002 / S 5002
Liquefied petroleum gas (LPG) space heaters designed for caravans and motorhomes, providing reliable heating with adjustable thermostat control and optional Trumavent warm air distribution systems. They operate on a 30 mbar gas supply and feature either a manual pressure igniter (P models) or an automatic electronic ignition system.
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 ignition sparks or sparks occurring slower than once per second | Depleted or dead battery in the automatic ignition unit, or bad connection. | — | Replace the battery (Mignon LR 6, AA, AM 3) with a temperature-resistant (+70 °C), leak-proof type with the heater switched off. | DIY Safe |
Gas line filled with air after cylinder change | Air trapped in the gas supply line preventing immediate combustion. | — | Hold the control knob fully depressed and actuate the igniter continuously for up to 2 minutes until the flame ignites. | DIY Safe |
Flame fails to light or goes out repeatedly | Faulty regulator, closed valve, or air in lines. | — | Wait at least 2 minutes before attempting a new ignition to prevent flashbacks. Verify gas supply and regulator condition. | DIY Safe |
No ignition sparking heard / monitor lamp 'e' not flashing | The battery on the auto ignitor is depleted or needs replacement. | — | Replace the battery with a temperature-resistant (+70 °C), leakproof Mignon battery (LR 6, AA, AM 3) with correct polarity. | DIY Safe |
Flame goes out repeatedly in windy conditions or winter | Extreme wind conditions or snow buildup are affecting the cowl. | — | Clear snow from the cowl and consider using a cowl extension such as AKV or SKV. | DIY Safe |
Gas line is air-filled during initial start | Air trapped in the gas supply line delays it lighting straight away. | — | Hold the control knob down and constantly actuate the igniter for up to two minutes until the gas is available and the flame burns. | DIY Safe |
N/A | Blown air not working | Supply fuse blown. | Replace the fuse. | DIY Safe |
N/A | Blown air running slowly | Hair or dust in the fan wheel, affecting the balance of the blown-air system. | Electrically isolate and clear with a brush; close/open to re-balance the system. | DIY Safe |
N/A | Blown air only blowing on one leg of the ducting system | A pipe is disconnected, or the fan paddle is not correctly positioned. | Check all pipe connections. Check the position of the paddle to ensure air flows in one direction. | DIY Safe |
N/A | Heater goes out when a door is slammed | The flue is disconnected or damaged. | Turn the heater off immediately and seek service attention. | DIY Check / Tech Fallback |
Frequently Asked Questions
Q: Can the Trumatic S 5002 be installed in motorhomes?
No, the Trumatic S 5002 heating system must not be installed in motorhomes. Only the Trumatic S 3002 (P) is permitted in motorhomes.
Q: What should I do if there is a gas leak or smell of gas?
Put out all naked flames right away, don't smoke, switch off every appliance, close the gas cylinder, open the windows and doors, avoid electrical switches, and have an expert inspect the whole system.
Q: How do I replace the battery in the automatic igniter?
Remove the heater casing, slide the battery compartment cover upwards, replace the battery observing correct plus/minus polarity, and close the compartment. Use only temperature-resistant (+70 °C) leak-proof Mignon LR 6, AA, AM 3 batteries.
Q: If the heater fails to start, how long should I wait before trying to re-ignite?
Wait at least 2 minutes before re-igniting, to avoid any risk of deflagration or misfiring.
Q: What type of battery should be used for the automatic ignition device?
Only use temperature-resistant (+70°C), leak-proof Mignon batteries (LR 6, AA, AM 3).