What to do if ITW Gema OptiFlex B control unit displays remain dark?
- JJennifer PooleAug 15, 2025
If the control unit displays remain dark even when switched on, there could be a few reasons. First, ensure the equipment is properly connected to the mains. If it is, check the power pack fuse and replace it if defective. If the fuse is fine, the power pack itself might be defective and needs replacement.
