Site Employee Call

1. Do all the KE2 Controllers have power? (Is the display lit up?) 
   1. YES: What color is the indicator light to left of display? 
      1. If Red or Amber - create a service ticket for repair 
      2. If Green - system is operating properly 
   2. NO: Has the cooler/freezer system been serviced recently? 
      1. YES: Manager to contact service vendor and ask if the cooler/freezer was left off intentionally. 
      2. NO: Check breaker panel to see if breaker is tripped. 
         1. Create Service ticket for repair #6 self-tapping screws 
2. Check address in GEM 

When Tech is on site

1. Check wiring terminations at IOM 
2. Do all the KE2 Controllers have power? (Is the display lit up?) 
   1. YES: 
      1. Is KE2 Controller Communicating with GridPoint? 
         1. Check address of controller, 50 and 51 for two freezers and 52 for cooler. 
            1. KE2 Low Temp - hold “Back” for 3 seconds and scroll to Adr 
            2. KE2 Temp - hold “Enter” for 3 seconds and scroll to Adr 
         2. Check communication cables for damage
         3. Check if the daisy chain has been broken - this splice can take place inside the controllers or on top of the Freezer/Cooler 
         4. Check the baud rate converter located near GridPoint Controller and confirm device still has power and   
            wires connected (Comm 1=KE2 Chain, Comm 2=RS485 to controller). Check communication cables from baud rate converter to GridPoint device (HUB, 1204EX, EC2000) 
   2. YES – ERROR CODE DISPLAYING 
      1. If Red or Amber indicator light, look up error code below and fix issue 

KE2 Low Temp Error Codes for Amber/Red Light

• AtSA = Air Temperature Sensor Alarm  
• CLSA = Coil Temperature Sensor Alarm  
• HtA = Hight Temperature Alarm 
• LtA = Low Temperature Alarm PF = Power Failure 

KE2 Temp Error Codes for Amber/Red Light

• SSA = Shorted Sensor Alarm  
• OSA = Open Sensor Alarm 
• HtA = Hight Temperature Alarm  
• LtA = Low Temperature Alarm
  3. NO 
     1. Has the system been serviced recently? Determine why unit may have been left powered off. 
     2. Check breaker panels for tripped breaker for cooler/freezer 
     3. Check evaporator disconnect inside cooler/freezer to confirm evaporator was not turned off on accident
     4. Check for coil sensor wires or any other wires in the side cabinets that may have melted or shorted out because of bad placement. 
     5. Check compressor cabinet for any sign of wiring changes from previous technicians attempting to put system back on time clock control 

3. If still receiving incorrect temperatures, replace KE2
   1. If customer installed, they need to replace it 
      1. If replaced with something GridPoint does not service, the KE2 will need to be removed from the configuration 
   2. If GridPoint installed, we will replace it