Siemens SINAMICS G120C USS/MB - Replace the Fan Unit for the Heat Sink

9.2.7 Replace the fan unit for the heat sink
Inverters, frame sizes FSA … FSF have a fan unit for the heat sink. The fan unit for the heat
sink is located at the lower side of the inverter.
When must the fan unit be replaced?
A defective fan unit in operation results in an overtemperature condition of the inverter. For
example, the following messages indicate that the fan unit is defective:
● A05002 (air intake overtemperature)
● A05004 (rectifier overtemperature)
● F30004 (heat sink overtemperature)
● F30024 (temperature model overtemperature)
● F30025 (chip overtemperature)
● F30035 (air intake overtemperature)
● F30037 (rectifier overtemperature)
Remove fan unit, FSA ... FSC
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Figure 9-1 Remove fan unit for heat sink
Corrective maintenance
9.2 Replacing inverter components
SINAMICS G120C converter
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34263257B AF 385