Truma VarioHeat
Official technical documentation and workshop diagnostics for VarioHeat.
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 | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|
N/A | LEDs do not light up, appliance is switched on, operating voltage present Possible Cause: Automatic restart is blocked, e.g. after a power failure | Reset (fault reset) by switching off, wait for 5 seconds and then switch on again | DIY Safe |
N/A | No LED illuminates after switching on Possible Cause: No operating voltage | Check 12 V battery voltage, charge battery if necessary, and check plug connections | DIY Safe |
N/A | No LED illuminates after switching on Possible Cause: Appliance fuse or vehicle fuse defective | Check fuse of appliance or vehicle and replace if necessary | DIY Safe |
N/A | The green LED lights up after switching on, but the heater does not operate Possible Cause: The temperature set on the control panel is lower than the room temperature | Select a higher room temperature on the control panel | DIY Safe |
Operational Fault | After operating for a longer period of time, the heater switches to fault Possible Cause: Gas cylinder or quick-acting valve in the gas supply line closed | Check gas supply and open valves | DIY Safe |
Operational Fault | After operating for a longer period of time, the heater switches to fault Possible Cause: Gas cylinder empty | Replace the gas cylinder | DIY Safe |
Operational Fault | After operating for a longer period of time, the heater switches to fault Possible Cause: Gas pressure regulation system iced up | Use EisEx regulator heater | DIY Safe |
Operational Fault | After operating for a longer period of time, the heater switches to fault Possible Cause: Butane content in the gas cylinder too high | Use propane (butane is unsuitable for heating, particularly at temperatures below 10 °C) | DIY Safe |
Operational Fault | After operating for a longer period of time, the heater switches to fault Possible Cause: Combustion air infeed or exhaust outlet is sealed | Inspect openings for obstructions (slush, ice, leaves, etc.) and remove any obstructions | DIY Safe |
Operational Fault | Heater fault Possible Cause: Heater internal fault | Contact an authorised service agent | Professional Intervention Required |
Operational Fault | After the heater is switched on, the green LED is lit and the red LED flashes 3 x Possible Cause: Risk of low voltage, battery voltage too low < 10.4 V | Charge battery | DIY Safe |
Operational Fault | After the heater is switched on, the green LED is lit and the red LED flashes 3 x Possible Cause: Low voltage, battery voltage too low < 10 V | Charge battery and replace old battery if necessary | DIY Safe |
Operational Fault | After the heater is switched on, the green LED is lit and the red LED flashes 3 x Possible Cause: Overvoltage > 16.4 V | Check the battery voltage and voltage sources such as the charger | DIY Safe |
Operational Fault | Open window above cowl Possible Cause: Window switch triggered by open window near cowl | Close windows | DIY Safe |
Operational Fault | Air flow obstruction Possible Cause: Warm air outlets or circulated air intake blocked | Remove blockage | DIY Safe |
Operational Fault | Motor wear limit reached Possible Cause: Motor wear limit will be reached soon | Contact an authorised service agent | Professional Intervention Required |