Troubleshooting & fault diagnosis for SHE

Please refer to the attached appendix for instructions on silencing the buzzer.

• Mute sound PCB type 2015
• Mute sound PCB type 2020

No, the Skymax cannot be opened manually when no power is connected.
What you can do is use the temporary cable and open the Skymax using a drill battery. An 18V battery is generally sufficient to operate the system temporarily.

The master has 4 connections on the bus connector, while the slave has 3. Only 3 connections need to be connected. This is because the master PCB has been updated, but the slave has not yet.

Reverse the motor wires. In the event of an alarm, the system must open, and on reset it must close.

The 4th wire does not need to be connected.

Yes, for a master-slave installation the following settings apply:

• Master: J4 + J5
• Intermediate slave: J6 only
• Last slave: J6 + J7

The wires of the weather sensor may not be properly grounded. When the rain sensor is activated, the LED will light up. This activates a 15-minute timer that can be reactivated by rain or wind. During this period, ventilation mode cannot be used. Also check that connections 21-22 are not short-circuited, which may be caused by a clock, building alarm or CTS.

When LED 4 stays on continuously: There is a problem with the motor. This may be caused by an incorrect connection or because no resistor has been fitted.
When LED 4 flashes: There is a problem with a wire making contact with the earth. Please note: this may cause the limit switch to fail.

• J2-J3 is not set correctly
• Output fuse defective (8 A fuse)

Correct operation

Alarm: The opening system is open (indicated by LED1)
Reset: The opening system is closed (indicated by LED2)

Regarding the fire push button:

• The 10 KΩ resistor in connection 13-14 must be removed when the fire push button is installed.
• J1 in the fire push button is not fitted.
• The wires are not positioned correctly.
• J1 must be set to “ON”, only in the last (or only) fire push button. This is the correct setting for the fire push button.

Regarding the priority switch:

• There is an incorrect connection. Consult the attached diagram for the correct order.
• The resistors on terminal 24-25 to 27 have not been removed.

• Wires are not connected correctly to the detector
• Detector not correctly “clicked” (turned) into the contact
• 10K resistor missing in the last detector

• Make sure that the 230 V fuse/circuit breaker in the control panel is switched on.
• Check whether the power supply under the main PCB is defective. There should always be a green LED on on the power supply behind the PCB.

• Check the internal LEDs on the main PCB to determine which output or input is causing a line fault.
• Make sure the ribbon cable of the cover is connected correctly (with the sticker facing right) or that the jumper on "No Foil" is positioned correctly.

• First check the connections on each fire push button or detector to make sure they are fitted correctly.
• Then check that the connector cables in connection 16-17 and 13-14 are not touching each other.

Make sure that for external connections you always have a NO contact and that a 10k resistor is connected in parallel. Also check that external systems are not transmitting an alarm status.

The Snitch function (DIP5) is enabled. To resolve this issue, reset the function by first switching DIP5 OFF and then back ON.

If a control unit shows a fault but still displays a green 'OK' LED, this usually means: 'I am working properly, the problem is probably with another control unit that is also connected to the bus.' Please note: By default, dip 5 is set to 'OFF'.

Legal requirements are not only there for compliance, but also to ensure your safety.

Annual maintenance of smoke and heat extraction systems (SHE) is essential and mandatory. Skylux is happy to take this off your hands with our dedicated SHE service. Not only do we ensure that you always comply with regulations, we also guarantee the optimal operation of your systems. Choose our competitively priced annual SHE maintenance contract.

Our technicians are also ready to service systems from other brands. Contact us today via +32 (0) 56 248 103 or email service@skylux.be.

• Incorrect maintenance (see maintenance instructions)
• Incorrect application area, e.g. environments with aggressive substances in the atmosphere
• Incorrect installation (see installation instructions)
• Incorrect use and deliberate damage
• Breakage caused by external factors (such as glass breakage due to impact from a hard object, hail damage or storm damage)
• Normal and natural wear of moving parts (e.g. screen, sunblind, etc.)
• Impact on polycarbonate skylights older than 5 years
• Natural weathering of wood
• UV discolouration of fabrics and coatings
• Opening and operating systems older than 5 years
• Electrical or electronic components older than 2 years