With over 15 years of experience and thousands of successful purchases, we offer a fast, fair, and hassle-free sale.
We come to you at no extra cost in Belgium and the Netherlands.
Get your money the same day via bank transfer.
We buy mobile homes of any age, brand, or condition, even if damaged or non-running.
You don't need to clean, inspect, or prepare your mobile home.
A Truma Combi that provides heat on gas but not on diesel often has a clogged fuel pump or a dirty burner chamber.
A Truma Combi that provides heat on gas but not on diesel often has a clogged fuel pump or a dirty burner chamber. With an Eberspächer or Webasto that won't start at all, the cause is often low battery voltage or a worn glow plug. First check the fault code and measure the battery voltage, because below 11.5 V most heaters refuse to start.
The exact solution depends on the type of heater and the fault code, but a systematic check of the fuel supply, glow plug and air passages will usually quickly get you to the root of the problem.
A diesel heater that won't start or keeps cutting out is a common problem in motorhomes. Whether you have a Truma Combi D, Webasto or Eberspächer, the causes are often similar. Always start by reading the fault code on the display or via a diagnostic device. That code tells you where the system is struggling. In addition, a healthy on-board voltage is essential: if the battery voltage drops below 11.5 V, most diesel heaters refuse to start or switch themselves off.
Check these points in order of likelihood:
After a simple check, always try a reset: turn the heater off completely, wait 30 seconds and start again. On a Truma Combi D this can be done via the control panel; on Webasto and Eberspächer, often by removing the fuse briefly. Consult your appliance's manual for this.
The costs depend heavily on the fault. A new glow plug costs roughly 30 to 80 euros, a metering pump 100 to 250 euros, and a thorough cleaning of the burner 150 to 300 euros including labour. For complex electronic faults, the bill can rise to 500 euros or more. Weigh these costs against the age and condition of your motorhome.
If you are still left with a faulty heater after these checks, or if the repair turns out to be more expensive than you would like, you don't have to keep struggling. Sometimes it is wiser to say goodbye to the motorhome and invest in one without worries. We buy motorhomes in any condition, even with a faulty heater. Request a free valuation and you'll know exactly where you stand.
Frequently asked questions
Don't let your camper with a faulty diesel heater stand in the way. Request a free and non-binding valuation today. We buy campers in any condition, even with a faulty heater.
