Truma Combi G comfort uses gasoline to provide warm air and hot water for motorhomes for a lightweight, space-saving solution
Technical Details
The Truma Combi G is Truma’s first gasoline-powered system. The newest evolution of Truma’s signature 2-in-1 system is a single-fuel solution that delivers hot air and hot water from one smart appliance. This saves space and weight in your RV by eliminating the need for bulky propane tanks to fuel your furnace and water heater.
Like its propane predecessor, Combi G has integrated a 2.6-gallon (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 Combi G features five operating levels to achieve the desired temperature in the RV more efficiently. With automatic altitude adjustment, the system will perform efficiently at high altitudes without any additional preparation for those spontaneous weekends in the mountains.
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.
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 can I determine which Combi is installed in my coach?
Are there any fuel requirements for the Combi G?
The Combi G furnace requires gasoline fuel according to ASTM D4814 with the following properties for operation:
How full does the gas tank need to be?
We recommend keeping the gas tank at least 1/4 tank full to support uninterrupted fuel delivery.
I'm getting error code E560. What do I do?
Error Codes on the CP plus:
My Combi is having issues with restarts but I'm not getting an error code. Is there anything I can do?
If the system has been sitting for an extended period of time:
If you are above 12,000 feet and are trying to cold start the Combi G:
If the system has recently been running:
If the problem continues, please contact us for assistance.
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 the following items:
If the issue persists, please contact Truma Customer Care for additional support.
Are there any extra steps if I have a generator installed?
If a generator is installed, start the generator before starting the Combi G. This will ensure the Combi G does not draw air from the generator fuel line.
Is the spout on my external wall cowl required?
It is recommended to reduce the risk of condensate dripping down the exterior wall of the RV, which can cause damage to the side wall over time. The spout can also be used for the Combi propane variants, but because propane tends to have lower particulate matter emissions it is not required.
Can I leave the spout attached while driving?
Yes, it can remain attached while driving. Since it just clips into place, it can be removed then reattached once parked and prior to using the Combi.
What if I lose the condensate spout? Does it need to be replaced?
We recommend it be replaced to help protect the sidewall of the RV. Replacements will be available on our Amazon store.
