Warning Description

The internal DCMU temperature threshold has been met. The CCR is running too hot, or environmental conditions are causing heat buildup. This warning defaults to 60°C. When the CCR determines a warning or setpoint alarm, it will engage the indicator light and the warning will be shown on line 1 of the CCR display. The CCR will continue to operate in the event of a warning. Although the CCR will continue operating, warning conditions must still be noted and fixed. Allowing the CCR to operate in a warning state may cause problems for efficiency, general safety, and longevity of equipment.

Attempt to Correct

Always maintain safe working conditions by using appropriate personal protective equipment (PPE) where necessary.
Do a visual inspection of the CCR enclosure.
Look for blockages of vent grating on the front door, enclosure top, and enclosure rear.
Do a visual inspection of the inside of the CCR.
Look for blockage of airflow around the DCMU.
Blow out dust with standard electronics compressed-gas duster.
Vacuum out all dust.
For prolonged hot environmental conditions, install temporary ventilation around the CCR to prevent damage from heat.