Truma VarioHeat
Official technical documentation and workshop diagnostics for VarioHeat.
View official manual on manufacturer's site ↗Technical Specifications
Operating Voltage12V DC
Power ConsumptionTruma VarioHeat eco: 0.65 / 2.75 A; Truma VarioHeat comfort: 0.65 / 2.75 / 5.4 A
Gas Or PressureLiquefied gas (propane / butane) at 30 mbar
Fuse RatingsAppliance fuse (F1): 10 AF – quick – (EN 60127-2-3)
Dimensions Cutout380 x 248 x 123 mm
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Possible Cause | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|---|
N/A | None of the LEDs light up, even with the appliance switched on and getting its operating voltage | The automatic restart lock has kicked in, e.g. following a power cut | Reset the fault by switching off, waiting 5 seconds, then switching back on | DIY Safe |
N/A | Nothing lights up when it's switched on | No operating voltage | Check the 12V battery voltage, charge if needed, and check the plug connections | DIY Safe |
N/A | Nothing lights up when it's switched on | The appliance's or vehicle's fuse is faulty | Check the appliance's or vehicle's fuse and replace it if needed | DIY Safe |
N/A | The green LED lights up once switched on, but the heater doesn't run | The control panel's temperature is set below the room temperature | Turn the room temperature up at the control panel | DIY Safe |
Red LED flashes 1 x | After running for a while, the heater switches to fault | The gas cylinder or its quick-acting valve is closed. | Check and/or open the gas supply valves | DIY Safe |
Red LED flashes 1 x | After running for a while, the heater switches to fault | Gas cylinder empty | Replace the gas cylinder | DIY Safe |
Red LED flashes 1 x | After running for a while, the heater switches to fault | The gas pressure regulator has iced up | Use EisEx regulator heater | DIY Safe |
Red LED flashes 1 x | After running for a while, the heater switches to fault | The gas cylinder's butane content is too high | Switch to propane instead - butane doesn't heat well, especially below 10°C | DIY Safe |
Red LED flashes 1 x | After running for a while, the heater switches to fault | The combustion air inlet or exhaust outlet is blocked | Check the openings for anything blocking them (slush, ice, leaves, etc.) and clear it away. | DIY Safe |
Red LED flashes 2 x | Heater fault | Heater internal fault | Contact an authorised service agent | Professional Intervention Required |
Red LED flashes 3 x | After switching on, the red LED flashes 3 times while the green LED stays lit | Low voltage risk - battery voltage has dropped below 10.4V | Charge battery | DIY Safe |
Red LED flashes 3 x | After switching on, the red LED flashes 3 times while the green LED stays lit | Low voltage - battery voltage has dropped below 10V | Charge the battery, and fit a new one if it's old | DIY Safe |
Red LED flashes 3 x | After switching on, the red LED flashes 3 times while the green LED stays lit | Overvoltage > 16.4 V | Check the battery voltage and whatever's supplying it, such as the charger | DIY Safe |
Red LED flashes 4 x | Open window above cowl | Window switch triggered by open window near cowl | Close windows | DIY Safe |
Red LED flashes 5 x | Air flow obstruction | Warm air outlets or circulated air intake blocked | Remove blockage | DIY Safe |
Red LED flashes 6 x | Motor wear limit reached | The motor's wear limit is coming up soon | Contact an authorised service agent | Professional Intervention Required |