Q: Why does my TRUMA Aventa comfort stay in standby mode with the fans on?

This behavior is completely normal for the TRUMA Aventa comfort. In sleep mode (standby), your air conditioning operates in cooling mode with the indoor and outdoor fans running at low speed for particularly quiet operation. This is the intended operation by the manufacturer. Here’s what happens: The compressor stops once the target temperature is reached The fans continue to run at low speed to ensure constant air circulation This alternation of the compressor with the active fans maintains temperature consistency If you want completely silent air conditioning without air circulation, you can switch to Air Circulation mode and turn it off, or simply accept this very quiet operation which is its signature in sleep mode.

Q: The air from the air conditioning is not cold enough, even when set to 16°C. Where does the problem come from?

This problem is common and usually arises from insufficient air circulation or a decrease in cooling power . Here’s how to diagnose and resolve it: Immediate Checkpoints Fan Position: Set it to maximum level (the Aventa eco offers several speed settings). A low-speed fan greatly reduces efficiency. Air Orientation: Set it to ceiling mode or wide diffusion, not in direct jet mode which poorly disperses the cold air. Doors and Windows: Ensure they are completely closed . Any leak reduces cooling. Inclination: The unit should not be tilted more than 8% during operation (check that it is resting flat). Filter Cleaning (very common cause) Dirty filters drastically reduce power. The manual recommends replacement every 12 months maximum (set of 2 filters, reference 40091-16800). Before ordering new ones, try first: Removing the current filters and cleaning them with warm water. Letting them dry completely before reinstalling. Checking the External Unit Check that the outdoor unit (where the hot air escapes) is not blocked or obstructed by debris, leaves, or dust. Clean it with a soft, damp cloth. Theoretical Performance The Aventa eco has a cooling power of 1.7 kW with an air flow of 340 m³/h . The operating temperature range is -16°C to 40°C , so 16°C is well within limits. If after these checks the air is still not cold , there is an internal technical problem (refrigerant gas, compressor, sensor) that requires intervention by a TRUMA authorized service .

Q: Where is the indoor air distributor filter of the Aventa eco located exactly?

The indoor air distributor filter is located in the panels of the air distributor mounted on the ceiling of your vehicle . To locate and access the filter: The filter fits into the panels of the air distributor and clicks into place Refer to figures 28-30 of the PDF manual to see the exact positioning The reference for the filter set (2 units) is 40091-16800 if you need to replace it Important point: Remember that the system should never operate without a filter, as this causes a loss of power. Before replacement, you can clean the existing filters with lukewarm water and let them dry completely. Regular maintenance of the filter is recommended every 12 months maximum , depending on usage intensity, to maintain optimal cooling performance.

Q: Is there a filter to clean on the external unit of the Aventa eco air conditioner?

No, the external unit is not equipped with a filter. The only filters that need maintenance are the 2 internal filters located in the air distributor mounted on the ceiling of your vehicle (reference no. 40091-16800). However, the external unit itself must remain to maintain performance: Maintain the required clearances: 20 mm in front, 100 mm on the sides, 30 mm at the back (Truma recommends 200 mm for optimal drainage) No obstacles in front of the air inlets/outlets No dead leaves, dust, or debris blocking airflow Simple cleaning with a soft, damp cloth (never use a high-pressure cleaner) Important: The unit must never operate without an internal filter as this causes a loss of power. Filters should be replaced every 12 months at most.

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

Why does my TRUMA Aventa comfort stay in standby mode with the fans on?

Accepted Answer

This behavior is completely normal for the TRUMA Aventa comfort.

In sleep mode (standby), your air conditioning operates in cooling mode with the indoor and outdoor fans running at low speed for particularly quiet operation. This is the intended operation by the manufacturer.

Here’s what happens:

The compressor stops once the target temperature is reached
The fans continue to run at low speed to ensure constant air circulation
This alternation of the compressor with the active fans maintains temperature consistency

If you want completely silent air conditioning without air circulation, you can switch to Air Circulation mode and turn it off, or simply accept this very quiet operation which is its signature in sleep mode.

Question 2

Why is water flowing on the interior facade of my TRUMA Aventa comfort?

Accepted Answer

This phenomenon is generally related to the drainage of condensation. Here are the causes and solutions:

Main causes

Blocked condensation drainage (most common cause): The manual states that "condensation water drainage must always be free during operation." Check that the outdoor air outlets and drainage pipes are not blocked by leaves, dust, or debris. Clean them regularly.
Dirty filter: A dirty filter reduces air circulation and promotes water accumulation. Replace your filters at least every 12 months (TRUMA reference: kit #40091-16800). Never operate the device without filters, as this would cause a significant loss of power.
Excessively high indoor humidity at startup: If humidity is high at the start of operation, condensation may form under the air distributor. Solution: close all doors and windows, then select the maximum fan speed.
Excessive tilt of the device: A tilt greater than 8% during operation can hinder drainage. Ensure that your device does not exceed this limit.
Defective roof seal: Poor roof sealing can allow water to seep in. Inspect the seal and have it replaced if necessary.

Actions to take

Start by: cleaning the drainage outlets, checking the condition of the filters and replacing them if they are dirty, closing doors/windows, and increasing the fan speed. If the problem persists after these checks, contact a TRUMA technician to verify the roof's sealing.

Question 3

What does the red blinking light on the TRUMA Aventa comfort mean?

Accepted Answer

The blinking of the red LED on your TRUMA Aventa comfort has different meanings depending on the context:

Red LED blinking

If the red LED 3 blinks, it indicates that data transmission is in progress between your remote control and the infrared receiver. This is normal during initial pairing or when issuing a command.

During the initial pairing of the remote control:

Insert the batteries respecting the polarity
Point the remote control towards the IR receiver
Press and hold the Setup button
When the red LED blinks, release the button
The pairing is complete and the system starts in air circulation mode

Red LED continuously lit

If the red LED 3 remains lit, it means that an incident or malfunction has been detected. Proceed as follows:

Turn off the air conditioning
Wait a few moments
Turn the device back on
If the red LED remains lit after these steps, contact the TRUMA customer service center

For your information, the other LEDs indicate: Blue LED = active cooling mode, Yellow LED = active heating mode.

Question 4

The air from the air conditioning is not cold enough, even when set to 16°C. Where does the problem come from?

Accepted Answer

This problem is common and usually arises from insufficient air circulation or a decrease in cooling power. Here’s how to diagnose and resolve it:

Immediate Checkpoints

Fan Position: Set it to maximum level (the Aventa eco offers several speed settings). A low-speed fan greatly reduces efficiency.
Air Orientation: Set it to ceiling mode or wide diffusion, not in direct jet mode which poorly disperses the cold air.
Doors and Windows: Ensure they are completely closed. Any leak reduces cooling.
Inclination: The unit should not be tilted more than 8% during operation (check that it is resting flat).

Filter Cleaning (very common cause)

Dirty filters drastically reduce power. The manual recommends replacement every 12 months maximum (set of 2 filters, reference 40091-16800). Before ordering new ones, try first:

Removing the current filters and cleaning them with warm water.
Letting them dry completely before reinstalling.

Checking the External Unit

Check that the outdoor unit (where the hot air escapes) is not blocked or obstructed by debris, leaves, or dust. Clean it with a soft, damp cloth.

Theoretical Performance

The Aventa eco has a cooling power of 1.7 kW with an air flow of 340 m³/h. The operating temperature range is -16°C to 40°C, so 16°C is well within limits.

If after these checks the air is still not cold, there is an internal technical problem (refrigerant gas, compressor, sensor) that requires intervention by a TRUMA authorized service.

Question 5

Where is the indoor air distributor filter of the Aventa eco located exactly?

Accepted Answer

The indoor air distributor filter is located in the panels of the air distributor mounted on the ceiling of your vehicle.

To locate and access the filter:

The filter fits into the panels of the air distributor and clicks into place
Refer to figures 28-30 of the PDF manual to see the exact positioning
The reference for the filter set (2 units) is 40091-16800 if you need to replace it

Important point: Remember that the system should never operate without a filter, as this causes a loss of power. Before replacement, you can clean the existing filters with lukewarm water and let them dry completely.

Regular maintenance of the filter is recommended every 12 months maximum, depending on usage intensity, to maintain optimal cooling performance.

Question 6

Is there a filter to clean on the external unit of the Aventa eco air conditioner?

Accepted Answer

No, the external unit is not equipped with a filter. The only filters that need maintenance are the 2 internal filters located in the air distributor mounted on the ceiling of your vehicle (reference no. 40091-16800).

However, the external unit itself must remain to maintain performance:

Maintain the required clearances: 20 mm in front, 100 mm on the sides, 30 mm at the back (Truma recommends 200 mm for optimal drainage)
No obstacles in front of the air inlets/outlets
No dead leaves, dust, or debris blocking airflow
Simple cleaning with a soft, damp cloth (never use a high-pressure cleaner)

Important: The unit must never operate without an internal filter as this causes a loss of power. Filters should be replaced every 12 months at most.

Question 7

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 8

My TRUMA Aventa comfort air conditioner stops immediately after turning on, how can I fix this?

Accepted Answer

An immediate stop after turning on your TRUMA Aventa comfort is generally a sign that the device is functioning correctly. The compressor stops automatically once the target temperature is reached. First, check that you have set a sufficiently low temperature (between 16 and 31°C via the remote control) and that the room conditions have not already reached this threshold.

If the stop persists even with a low target temperature, check:

Presence and cleanliness of filters - The manual specifies that the device should never operate without filters, as this reduces efficiency and may trigger a safety protection. Clean or replace the filters at least once a year.
Obstruction of air vents - Ensure that the air intakes and outlets (max. 400 m³/h) are not blocked.
Electrical consumption - Check that your installation can support 4.2A in cooling and that the voltage (230V-240V) is stable.
Remote control batteries - Replace them and press the Setup button to re-pair the remote control with the IR receiver.

If the immediate stop persists after these checks, it may indicate a fault in the temperature sensor or the compressor that requires technical intervention.

Question 9

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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