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990-1403
User Guide APC BC300 Series 40kW 208/450/480V UPS 21
TSM 1 temp.
shutdown
Inverter module 1 has shut down
because the temperature on the
heat-sink is higher than the
shutdown level. If bypass is within
tolerance, the unit transfers to
static bypass operation. If not, the
unit transfers to stand-by mode
and does not supply output voltage.
Find the vents for the UPS fans
and check to see if the fans are
operating. Do not try to open the
unit, and do not insert anything
into a fan vent. If the fans are not
operating, call APC Global
Service.
If the fans are operating, make
sure the room temperature is
below 80° F (27° C). If not, cool
down the room. if the room was
already below this temperature,
call APC Global Service.
TSM 1 temp.
warning
The temperature on the heat-sink
for inverter module 1 has exceeded
the warning setting. The unit’s
status does not change. However, if
the temperature continues to rise,
the unit will sound a “TSM 1 temp.
shutdown” alarm.
Find the vents for the UPS fans
and check to see if the fans are
operating. Do not try to open the
unit, and do not insert anything
into a fan vent. If the fans are not
operating, call APC Global
Service.
If the fans are operating, make
sure the room temperature is
below 80° F (27° C). If not, cool
down the room. if the room was
already below this temperature,
call APC Global Service.
TSM 2 temp.
shutdown
Inverter module 2 has shut down
because the temperature on the
heat-sink is higher than the
shutdown level. If bypass is within
tolerance, the unit transfers to
static bypass operation. If not, the
unit transfers to stand-by and does
not supply output voltage.
Find the vents for the UPS fans
and check to see if the fans are
operating. Do not try to open the
unit, and do not insert anything
into a fan vent. If the fans are not
operating, call APC Global
Service. If the fans are operating,
make sure the room temperature
is below 80° F (27° C). If not, cool
down the room. if the room was
already below this temperature,
call APC Global Service.
TSM 2 temp.
warning
The temperature on the heat-sink
for inverter module 2 is higher than
the warning setting. The unit’s
status does not change. However, if
the temperature continues to rise,
the unit will sound a “TSM 2 temp.
shutdown” alarm.
Find the vents for the UPS fans
and check to see if the fans are
operating. Do not try to open the
unit, and do not insert anything
into a fan vent. If the fans are not
operating, call APC Global
Service. If the fans are operating,
make sure the room temperature
is below 80° F (27 °C). If not, cool
down the room. if the room was
already below this temperature,
call APC Global Service.
Table 5: Possible Alarms