If your PDLC Smart Film remains opaque when switched ON, the problem may not necessarily be with the Smart Film itself. It may be related to the electrical supply, control method, remote control or an individual panel connection.

Where multiple Smart Film panels or control methods are available, check whether other panels operate normally and try an alternative control method. This can help determine whether the issue affects the complete system or only a particular panel, zone or control device.

Observe the affected Smart Film while attempting to switch it ON. Note whether it remains completely opaque, partially changes state, appears uneven or flickers, as these observations can help identify the possible cause.

Do not open the power supply, remove electrical covers or attempt to test exposed wiring yourself. Follow the visual troubleshooting procedure below.

If your Smart Film remains transparent when you expect it to return to its opaque privacy state, first confirm which type of Smart Film is installed. Conventional PDLC and Reverse PNLC operate in opposite ways: Standard PDLC is opaque when powered OFF and transparent when ON, while Reverse PNLC is transparent when OFF and opaque when ON.

If conventional PDLC remains transparent after being switched OFF, try another available control method and compare the behaviour of other Smart Film panels or zones where available. This can help determine whether the issue affects the complete system or only a particular control, panel or zone.

Observe the affected Smart Film while switching it OFF and note whether it remains completely transparent, briefly becomes opaque, changes only partially or flickers between states. These observations can help identify the possible cause.

Do not open the power supply, control equipment or electrical enclosures, and do not attempt to disconnect exposed wiring yourself. Follow the visual troubleshooting procedure below.

If the Smart Film does not respond when using the remote control, the problem may be limited to the remote-control system rather than the Smart Film itself. Common causes include weak or depleted AAA batteries, an incorrect channel or zone selection, communication range, or an issue with the remote receiver.

Where another control method is available, such as a wall switch, mobile application, Smart Home system or BMS, use it to operate the affected Smart Film. If the film responds normally, the Smart Film and its power supply are likely functioning correctly and the issue is more likely associated with the remote-control system.

If the same remote operates multiple panels or zones, check whether the problem affects all of them or only one particular zone. This information can help distinguish a remote or receiver issue from a problem associated with an individual control zone.

Do not perform undocumented pairing procedures, factory resets or receiver programming, as this may erase existing settings or affect other configured zones. Follow the visual troubleshooting procedure below.

If the Smart Film does not respond when using a wall switch or installed control device, first determine whether the problem affects only that control method or the complete Smart Film system.

Where another control method is available, such as a remote control, mobile application, Smart Home system or BMS, use it to operate the affected Smart Film. If the film responds normally, the Smart Film and its power supply are likely functioning correctly and the issue is more likely associated with the wall switch, control input or associated control equipment.

Check only for obvious external signs of damage or abnormal operation. If the installation uses multiple panels or zones, note whether the problem affects one particular area or the entire system, as this can help identify the possible cause.

Do not remove wall switches, electrical covers or control equipment to inspect the wiring yourself. Follow the visual troubleshooting procedure below.

PDLC Smart Film does not become optically identical to ordinary clear glass when switched ON. A small degree of visible haze is a normal characteristic of PDLC technology and may become more noticeable depending on viewing angle, lighting conditions and the environment behind the glass.

If the haze appears significantly stronger than usual, compare the affected panel with other Smart Film panels of the same type where available. Also observe whether the haze is uniform across the complete panel or concentrated in particular areas, such as bands, gradients or isolated cloudy sections.

A noticeable change from the panel’s previous appearance, particularly when only one panel is affected, may indicate an electrical, installation or Smart Film issue rather than normal PDLC haze.

Do not attempt to adjust the power supply or electrical system to improve transparency. Follow the visual troubleshooting procedure below.

Different types of Smart Film do not necessarily operate in the same way. Before assuming there is a fault, confirm which Smart Film product is installed and what its normal operating behaviour should be.

Standard PDLC, High Temperature PDLC, Colored PDLC and conventional Etched PDLC are normally opaque when powered OFF and transparent when powered ON. Reverse PDLC (PNLC) operates in the opposite way and is transparent when OFF and opaque when ON.

Etched or segmented Smart Film installations may also contain independently controlled areas, allowing selected sections or patterns to switch separately from the surrounding film. Colored Smart Film retains its characteristic color tint even when switched to its transparent state.

If the behaviour has changed from how the installation previously operated, affects only one panel or zone, or cannot be explained by the installed Smart Film type or configured control functions, further investigation may be required.

Follow the visual guide below to compare the observed behaviour with the expected operation of your Smart Film.

If several Smart Film panels are installed and only one panel behaves differently while the others operate normally, this generally indicates that the main system is functioning and that the issue is limited to the affected panel, its individual control zone or its electrical connection.

Compare the affected panel with a neighbouring panel of the same Smart Film type. Observe whether it remains opaque or transparent, switches only partially, appears unusually hazy, flickers, or responds differently when the same control command is used.

Where panels are controlled individually, confirm that the correct zone or channel is selected and, if another control method is available, use it to operate the affected panel. If the problem remains limited to the same panel regardless of the control method used, further technical investigation may be required.

Do not remove trim, profiles, electrical covers or attempt to access the Smart Film wiring or busbar connections yourself. Follow the visual troubleshooting procedure below.