Truma Trumatic C 4002 / C 6002
The Trumatic C 4002 and C 6002 are hot-air liquid-gas combination heating systems with an integrated 12-litre hot water boiler. They provide thermostatically controlled room heating and water heating simultaneously or independently, with fan-assisted operation for use while driving.
Technical Specifications
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|
Operational Fault | Device/vehicle fuse defective, window above cowl open, or no supply voltage. | Check 12V / 230V battery voltage, check fuses and electrical plug connections, and close window above cowl. | DIY Safe |
Red monitor lamp flashes | Battery voltage too low (< 10.5 V). | Charge battery immediately. | DIY Safe |
Operational Fault | Battery voltage too low (< 10.5 V) | Check and charge the battery. | DIY Safe |
Operational Fault | Gas cylinder or quick-closure valve closed, or air feed interrupted. | Check gas feed/valves, check cowl for blockages, and open deck cowl if on a boat. | DIY Safe |
Operational Fault | Hot-air outlets blocked, gas pressure regulator iced up, or butane content in gas cylinder too high. | Check individual outlet apertures, use de-icing system controller (EisEx), or switch to propane (especially below 10°C). | DIY Safe |
Safety/drain valve opens automatically | Outside temperature below 4°C or lack of 12V power supply to the valve. | Switch the heating on; ensure 12V power supply and fuses are intact. | DIY Safe |
Operational Fault | Outside temperature below 8°C without heating operation active, or lack of 12V power supply. | Switch the heating on to warm the surrounding area above 8°C, then lift control knob to close. | DIY Safe |
Operational Fault | Gas cylinder or quick-acting valve closed, or air supply interrupted | Check gas supply, ensure quick-acting valve is open, check chimney for blockages or covers. | DIY Safe |
Operational Fault | Warm air outlets blocked, gas pressure regulator frozen, or butane content in gas too high | Check individual outlets, use EisEx de-icing system, or switch to propane gas. | DIY Safe |
Frequently Asked Questions
Q: Can the heating be operated without water in the boiler?
Yes, heating operation is basically possible without restriction with or without water content.
Q: Why does the electrical safety/drain valve open by itself?
At temperatures below 4°C at the valve, or when the system loses 12V power, the safety valve opens automatically to drain the boiler and prevent frost damage.
Q: How do I fill the water boiler?
Close the safety/drain valve by lifting the control knob to position 'm', turn on the water pump power, and open the hot water taps until water flows continuously without air.
Q: Can I use the hot water for drinking?
No, the water in the boiler is not drinking water.