Failure of the external air exhaust system.

Check the external air exhaust system. Note that the installed exhaust blower must remove an air volume of 10 m³/min or 350 CFM per installed DP-3000 projector.

Blocked air outlet.

Check if the air outlet on top of the projector is not blocked.

Blocked air inlet

1. Check if the air inlet at the front and at the left side of the projector is not blocked.

2. Check both dust filters of the projector. Clean if necessary or replace if damaged.

Disconnected air flow switch.

Check the wire unit of the air flow switch (reference 1 image) in the air outlet channel of the projector and check if the wire unit (reference 2 image) is connected with the Signal Backplane.

Defect air flow switch.

Replace the air flow switch.