How to remove a Quartz digital / smart main control?

1. On the underside of the control, you will see a single self-retaining screw with a cross-head – loosen the screw to release the control.

2. Carefully slide the control upwards and away from the mounting plate to expose the data cable.

3. The cable can now be pulled out of the back of the control. If replacing the control, the cable must be firmly pushed into the control to ensure a good connection and seal.