Q: Which filters of the TRUMA Aventa comfort are washable and how to clean them?

The TRUMA Aventa comfort has washable air filters that need to be regularly maintained to keep cooling performance. Cleaning procedure Remove the front panel of the unit Take out the filter Wash it with lukewarm soapy water Let it dry completely before reinstalling Maintenance frequency Replace the filters at least every 12 months , depending on usage intensity. A clogged filter reduces airflow and limits cooling efficiency. Important point Never operate the air conditioning without a filter, as this can cause a loss of power. For a complete replacement, use the original filter set no. 40091-16800 (2 units).

Question 1

Which filters of the TRUMA Aventa comfort are washable and how to clean them?

Accepted Answer

The TRUMA Aventa comfort has washable air filters that need to be regularly maintained to keep cooling performance.

Cleaning procedure

Remove the front panel of the unit
Take out the filter
Wash it with lukewarm soapy water
Let it dry completely before reinstalling

Maintenance frequency

Replace the filters at least every 12 months, depending on usage intensity. A clogged filter reduces airflow and limits cooling efficiency.

Important point

Never operate the air conditioning without a filter, as this can cause a loss of power. For a complete replacement, use the original filter set no. 40091-16800 (2 units).

Question 2

Why is my TRUMA Aventa comfort not cooling sufficiently?

Accepted Answer

If your Truma Aventa comfort is not cooling sufficiently, first check these essential points:

Clogged filters – This is the main cause. Replace the filters according to usage, at least every 12 months. Operating without a filter significantly reduces airflow to 400 m³/h and cooling performance. Use filter set no. 40091-16800 (2 pieces).
Blocked airways – Check that the air inlets/outlets on the roof and facade are not blocked by foliage, dust, or debris. Clean the grilles and ducts regularly.
Suboptimal settings – Set the fan to maximum (not medium), adjust the front/rear distribution to the middle position, and the ceiling/floor to ceiling for better circulation. The target temperature should be between 16 and 31°C.
External air leaks – Close all doors and windows during cooling. Any influx of warm air from outside drastically reduces efficiency, especially in high heat.

Important operating points: Once the target temperature is reached, the compressor automatically stops to save energy – this is normal operation. The circulating air continues for ventilation. Cooling restarts if the temperature rises. After starting, the compressor takes up to 3 minutes to start.

Environmental conditions: The Aventa comfort operates between +4 °C and 40 °C. To optimize performance, park the vehicle in the shade, clean the roof regularly (a dirty roof heats up more), ventilate well before cooling to eliminate accumulated warm air, and do not use a steep incline (maximum 8%) in prolonged cooling mode.

If after these checks the performance remains insufficient, a refrigerant R407C charge fault or a compressor issue may be the cause. Contact an authorized Truma service center, as only the workshop is allowed to intervene on the sealed refrigeration circuit.

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