Carrier AddVolt - User Manual

Questions and Answers

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walkerjeffAug 15, 2025
Why Carrier Fan refrigeration unit does not start from AddVolt system nor power grid?
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  erinharrisAug 15, 2025
  If the Carrier Fan refrigeration unit doesn't start from either the AddVolt system or the power grid, a possible cause is a broken fuse in the FUBO (Fuse Box). To resolve this, press the service disconnect and disconnect from the grid, then measure the continuity of all fuses in the FUBO and replace any broken fuses. If this doesn't solve the problem, check the Service Manual of the refrigeration unit.
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Mary KnightAug 25, 2025
How to fix Carrier AddVolt Fan refrigeration unit stopping before reaching setpoint in electric?
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  Christian StevensonAug 26, 2025
  If the Carrier Fan refrigeration unit stops before reaching the setpoint in electric mode, it might be due to a completely discharged AddVolt unit. Charge the AddVolt system before trying again. Alternatively, the device might have failed; check if “fail” is active on the display and follow the instructions in the Alarm Signal section.
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Nathan KirkNov 4, 2025
What to do if Carrier AddVolt Fan refrigeration unit detects “NO POWER”?
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  Shawn ShortNov 4, 2025
  If the Carrier Fan refrigeration unit detects “NO POWER”, it could be due to several reasons. First, the refrigeration unit might have tried to start before the AddVolt system was ready; in this case, shutdown the refrigeration unit and start the AddVolt system first. Another cause might be that the AddVolt system is in sleep mode or critically discharged; connect to the power grid, turn the service disconnect OFF and then ON, and follow the instructions in the Alarm Signal section. A broken fuse in the FUBO (Fuse Box) could also be the reason; press the service disconnect, disconnect from the power grid, measure the continuity of all fuses in the FUBO, and replace any broken fuses. Finally, there might be a defect on the cabling or connectors; open the motor and grid/gen power cable conne...