Wall control panel or screen is not coming on .

• If the screen fails to power on, goes black, or shows no signs of life, two potential causes can be considered.

1. The first is a potential cable issue, either due to a fault or damage.

2. The second possibility is an issue related to component "c225."

Possible Solution

To address this, begin by attempting to change the screen's port on the CPU to "c225." Plug it into an alternative iZone Net port on the CPU and check if the problem persists. If the issue remains unresolved, consider replacing the cable that connects the CPU to the wall control panel, as this may be a source of the problem.