Truma Combi comfort plus uses propane and electric heating elements to provide warm air and hot water for larger vehicles.
Technical Details
Enjoy twice the comfort with Truma Combi: an RV furnace and water heater in one appliance. This saves space and weight in your travel trailer or motorhome. Truma has integrated a 2.64 gal. (10L) water tank into the system in such a way that the water can be heated by the furnace in the colder months. In warmer weather, you can get hot water for your shower and everyday needs independent of the furnace. The added 20,400 BTU/h operating level makes the Combi comfort plus powerful enough for larger travel trailers and motorhomes.
In addition to the two-in-one functionality, the Truma Combi comfort plus also has integrated electric heating elements. The heater offers modes for every camping lifestyle: gas mode for self-sufficient “off-the-grid” camping, electric mode for full hook-up at the campsite, and mixed mode for efficient heating in extremely low temperatures.
Truma introduced the Combi to the RV industry in 2007, the first RV furnace of its type. Since then, Truma has continued to innovate and evolve this heating technology. Hot air and hot water from one smart appliance provide the comforts of home while out on the road. The water tank is integrated into the furnace, providing hot water while it produces hot air. When the weather is warm, you can use your hot water without running the furnace.
Visit our blog to find articles that will help you extend your camping season and get the most out of your RV:
The Truma Combi owners are just one step away from achieving complete comfort. Truma Interconnect capabilities allow you to upgrade your RV with a Truma air conditioner and utilize the CP plus already installed in your vehicle. Control your heating and hot water functions from the Combi and the cooling functions of your Aventa from one convenient place.
How do I winterize my Truma Combi comfort plus?
Please refer to your RV manufacturer’s instructions for winterizing and bypass valves.
My CP plus is showing error code E8. What should I do?
If your CP plus control panel is displaying error code E8, disconnect and reconnect power to the CP plus. Make sure all connections are clean and making good contact. If the error persists, please contact Truma Customer Care for additional support.
My CP plus is showing error code E18. What should I do?
If your CP plus control panel is displaying error code E18, it means your air intake is obstructed. Clear the air intake and check warm air outlets for blockage or crushed ducting. If the error persists, please contact Truma Customer Care for additional support.
My Combi will not stay lit but I am not getting an error code. What should I do?
If your Truma Combi will not stay lit but you are not receiving an error code, check to make sure the tank has not frozen. If the tank freezes, it can become swollen and restrict the air flow into the ducting. This could cause the unit to overheat and cycle off. If the error persists, please contact Truma Customer Care for additional support.
My Combi will not operate on gas mode. What should I do?
If your Combi will not operate in gas mode, please try these troubleshooting steps:
If you verify all the steps above and are still having problems, contact Truma Customer Care for additional support.
My Combi will not operate on 110 V power. What should I do?
If your Combi will not operate on 110 V power, please try these troubleshooting steps:
If you verify all the steps above and are still having problems, contact Truma Customer Care for additional support.
