The AUREN Manual Mode allows users to set a continuous, fixed fan speed for the ventilation unit, overriding automatic sensor-based operations. In this mode, both humidity and twilight sensors are disabled, and the unit operates with heat recovery. This setting is ideal for maintaining a consistent airflow regardless of environmental conditions, ensuring steady air exchange in residential or public spaces.

Understanding the AUREN 160 Single-Room Heat Recovery Ventilation Unit

The AUREN 160 is a single-room heat recovery ventilation unit designed to facilitate constant air exchange within a room. It's an excellent solution for residential and public spaces, featuring a ceramic heat exchanger. This exchanger efficiently stores thermal energy from outgoing warm air and transfers it to cooler incoming air from outside, ensuring energy efficiency. The unit is typically wall-mounted, and its supplied duct can be adjusted for wall thicknesses between 250 mm and 500 mm. It's crucial that the air being processed does not contain any flammable or explosive mixtures, chemical vapours, dust, oils, or other harmful substances.

Core Operating Modes of the AUREN 160

The AUREN 160 offers three primary operating modes, along with six additional quick-access modes, providing versatile control over your indoor air quality. The primary modes are AUTOMATIC, SURVEILLANCE, and MANUAL, all accessible via the

MODE button on the remote control. Furthermore, there are additional modes for specific scenarios, including NIGHT, BOOST, MASTER-SLAVE AIRFLOW, SLAVE-MASTER AIRFLOW, EXTRACTION, and INTAKE.

Delving into Manual Mode: Precision Control at Your Fingertips

Manual Mode provides direct control over the AUREN 160, allowing you to set the fan speed precisely as needed. When you activate Manual Mode, the unit's integrated humidity and twilight sensors become inactive. This means the unit will maintain the selected speed and continue its heat recovery function without automatic adjustments based on environmental conditions.

Activating Manual Mode

To engage Manual Mode, simply press the

MODE (M) button on your remote control repeatedly until the Manual Mode icon appears on the display. The remote cycles through AUTO, SURVEILLANCE, and MANUAL modes in sequence, so a few presses might be necessary. Once in Manual Mode, the

IMPELLER (V) button becomes active, allowing you to choose your desired fan speed. The unit will then operate at this set speed until you issue a new command.

When to Utilise Manual Mode

Manual Mode proves invaluable when you require consistent heat recovery, irrespective of the prevailing humidity levels in the room. It is also the ideal choice when you need to enforce a uniform, fixed speed across all connected units in a multi-unit setup. For instance, if you're hosting a gathering and want to ensure a steady rate of air exchange, Manual Mode gives you that unwavering control.

Other Important Operating Modes

While Manual Mode offers precise control, it's beneficial to understand other modes for comprehensive air management.

Automatic Mode: Intelligent Operation

In Automatic Mode, both humidity and twilight sensors are fully operational, enabling the units to function independently without manual intervention. This mode intelligently adjusts the unit's operation based on detected conditions. For example, under standard humidity conditions during the day, units run at medium speed with heat recovery, while at night, they shift to minimum speed with heat recovery. If a humidity alarm is triggered (when the MASTER unit detects humidity exceeding a selected threshold of 40%, 60%, or 90%), the units switch to extraction mode at medium speed during the day and night speed during the night. Keep in mind that these thresholds are based on controlled tests at 20°C, and actual performance may vary due to environmental factors.

Surveillance Mode: Humidity-Triggered Ventilation

Surveillance Mode also utilises both humidity and twilight sensors. In this mode, the units remain in standby with the front panel closed until the room's humidity level surpasses the set threshold. Once the threshold is exceeded, the units initiate extraction. During daytime humidity alarms, the units operate at medium extraction speed, and at night, they operate at night-speed extraction. Similar to Automatic Mode, humidity alarm thresholds are 40%, 60%, or 90%, and actual sensor performance can be influenced by environmental factors.

Night Mode: Quiet Efficiency

When the external environment is particularly quiet and even the unit's minimum speed might be noticeable, Night Mode is the recommended choice. Activating this mode via the

NIGHT (N) button sets all units to operate at night speed with heat recovery. This setting remains active until a new command is issued.

Airflow Modes: Master-Slave and Slave-Master

The AUREN 160 also features specific airflow modes for more directed ventilation. In

MASTER-SLAVE AIR FLOW MODE, units create a continuous airflow from the MASTER or SLAVE (SAME AS MASTER) units to the SLAVE (OPPOSITE TO MASTER) units, without heat recovery. This mode is excellent for isolating odours, such as in a kitchen, or for "free-cooling" during summer when the external temperature is lower than indoors.

Conversely,

SLAVE-MASTER AIR FLOW MODE establishes a continuous airflow from SLAVE (opposite to MASTER) to MASTER, or from SLAVE (same as MASTER) to MASTER, also excluding heat recovery. This mode is similarly effective for odour isolation in specific rooms or for summer free cooling, drawing fresh air into the house when outdoor temperatures are cooler. Both airflow modes allow for speed adjustment via the

IMPELLER (V) button.

Extraction and Intake Modes: Targeted Ventilation

For situations requiring significant air movement, the AUREN 160 offers dedicated extraction and intake modes.

EXTRACTION MODE is ideal for rapidly removing large volumes of stale air, though this comes at the expense of heat recovery. This mode is particularly useful in heavily occupied spaces, like during parties.

INTAKE MODE, conversely, is recommended when a substantial amount of fresh air intake is needed, such as in crowded rooms during events. Similar to extraction, this mode prioritises air volume over heat recovery efficiency. Both Extraction and Intake modes enable speed selection through the

IMPELLER (V) button.

Maintenance and Troubleshooting

Regular maintenance is vital for the optimal performance of your AUREN 160 unit. Every 3,000 working hours, an indicator on the MASTER unit will blink to signal that maintenance is required. While the units continue to operate, no configuration changes can be made until maintenance is completed and the filter alarm is reset by pressing the

FILTER (R) button on the remote control. Filters should be replaced at least every two years, or more frequently if visible wear is present, to ensure proper air filtration. All maintenance operations should be carried out by qualified personnel after disconnecting the main electrical supply.

Should you encounter any issues, a basic troubleshooting guide is available. If the product doesn't start, verify it's connected to the mains and the ON/OFF switch is in the 'ON' position. If the remote control signals are not received, check the battery and ensure commands are sent to the MASTER unit. If the impeller isn't turning, allow 40 seconds for the automatic shutter to open, confirm the unit isn't in surveillance mode, and check for obstructions. A blinking red LED on the SLAVE unit indicates a communication issue, so check connections and dip switch settings. For unresolved issues, contact an authorised service centre.

Manual Mode on your AUREN unit empowers you with precise, consistent control over ventilation, providing unwavering performance for optimal indoor air quality.