Practical answers for your Airleader.

For MASTER modules, the web visualisation shows the firmware version under Settings → Remote control → Configuration table, with the controller number directly above it. The controller number is the serial number. Without web access, use the device label or control panel:

• MASTER I: Access the device details using the membrane keypad; see the relevant manual for the key sequence.
• MASTER II: On the touchscreen, open Status → Controller and SD card.
• MASTER II+: On the touchscreen, open Status → System information.
• Menu names vary by generation. Note the complete serial number and software version before contacting support.

Start by checking the bus connection and communication module assignments. Work through these three points:

• Have qualified personnel check the bus cable and connections against the wiring diagram.
• Compare the configured module addresses with the addresses set on the modules.
• When extending the bus over Ethernet, the response timeout may be too short. Consult support before adjusting the communication parameters.

Yes. Capacity depends on the controller type, software version and enabled options. The current controller variants offer these capacities:

• EASY: one VSD compressor as standard, optionally up to four.
• MASTER 4 and CN light: two VSD compressors as standard, optionally up to eight.
• CN: two VSD compressors as standard, optionally up to 32.
• Older MASTER and CN generations may have different limits. Support can check expansion options using the serial number.

The MASTER module and CN can calculate an average control pressure from up to three pressure transmitters at different locations. Permitted deviations can be defined for the readings. If a sensor exceeds these limits, its reading is excluded from the average. Measurement locations and limits must suit the system; this function does not replace investigating actual pressure losses in the network.

Yes. On suitably equipped MASTER/CN systems, the Airleader control pressure is available at the communication modules' AO analogue output. A compatible variable-speed compressor can use this signal as its actual pressure reading, giving both systems the same pressure information. Qualified personnel must check the connection, signal range and scaling against the relevant device documentation.

Start with the network connection before changing storage or configuration:

• Use PING in the visualisation's diagnostics area to check whether the controller is reachable. A failed PING alone does not prove a device fault; network settings can also prevent a response.
• If PING succeeds, check whether the IP address has accidentally been assigned to more than one device.
• If the connection and addressing are correct, internal storage or the SD card may be involved. Agree further diagnostic steps with support.
• Do not initialise the SD card as a precaution: this can cause data loss. Back up the data first, and proceed only according to the relevant device manual and with approval.

On older MASTER installations, the Prog key switch must be set to Off for this remote-control function. The access code entered must also be correct. Check both against the manual for your device generation. Only authorised personnel may change control parameters; if values are still not accepted, contact support with the model and software version.

If the visualisation works locally but not from other computers, the firewall may be blocking incoming connections. Ask IT to check the HTTP port actually in use: usually 80 in these installations, or for example 8080 after a change. Access should be restricted to authorised computers or internal networks. Do not disable the firewall completely or expose the server to the internet without a review.

In principle, yes. However, this web server installation does not support selecting a network drive as the data destination during setup. The web server runs as a Windows service and does not automatically have access to drives mapped in a user account. Install using a local data folder first. IT must then configure the network path and the service account's access permissions and test write access.

First check that you are accessing the updated Airleader web server. Older installations may require uninstalling the previous version before installing the new one. From version 3.000, the instructions describe a built-in online updater, provided the server has the required internet access. Before reinstalling, back up the data and record the controller IP address and data folder. The correct update procedure depends on your version; if unsure, contact support before uninstalling.