66 CO2 Too Low MP4000

Description 

CO2 Too Low 

• Occurs during Normal Run with AFAM+ enabled. 
• If the CO2 level has been within 0.6% of set point for one hour and then gets 1.6% below set point. 
• Indicates: 
• Not intended ventilation with fresh air 
• Stocked air vent door. 
• Air Vent. Motor defect. 
• Container doors open. 

Corrective Action 

• Using Manual Function Test - Check air vent door functionality. 
• Check wiring. 
• Check container doors.