Truma Combi G comfort / Truma Combi G comfort plus
The Truma Combi G is a warm-air furnace with an integrated 2.6 Gal. (10 litre) water container designed for motor homes and caravans. It provides simultaneous space heating and hot water using gasoline fuel, with electric and mixed modes available on the comfort plus model.
Technical Specifications
Power Consumption 12v0.4 - 8.1 A
Power Consumption 230v7.1 A (850W) / 14.2 A (1700W)
Water Capacity Litres10 litres
Weight Kg15.6 kg (16.8 kg with periphery)
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|
Operational Fault | Fuse blown or overheating protection switch triggered. | Change the 12V or 120V fuse, or reset the 120V AC overheating protection switch. | DIY Safe |
Error E 560 | No flame detected after repeat start attempts during fuel line filling or startup. | Acknowledge the error message on the control panel and make a new start attempt. After 5 unsuccessful attempts, customer service must unlock the system. | DIY Check / Tech Fallback |
Operational Fault | Water container scaled up. | Descale the water system using commercial descaling products, vinegar essence, or citric acid. | DIY Safe |
Operational Fault | Pressure relief / drain valve open. | Close the pressure relief / drain valve. | DIY Safe |
Operational Fault | Fault in fuel supply, improper installation, or combustion air inlet restricted. | Fire hazard. Stop using the device immediately and contact customer service. | Professional Intervention Required |
Frequently Asked Questions
Q: Can the furnace be used while the vehicle is in motion?
No, the furnace must not be used while the vehicle is in motion.
Q: What kind of fuel does the furnace require?
The furnace requires gasoline fuel according to ASTM D4814 with up to 10% ethanol content, up to 3% methanol content, and no metal-containing additives.
Q: What should I do if there is a risk of frost?
Drain the water container completely via the pressure relief / drain valve and leave the valve open to ensure no residual water remains during frost periods.