Bypass Sequence Nok; Bypass Static Switch Over Temperature - Tripp Lite SU60KX Manual

5 Troubleshooting (continued)
5.2 Troubleshooting Flow Charts (continued)

5.2.4 "BYPASS SEQUENCE NOK"

5.2.5 "BYPASS STATIC SWITCH OVER TEMPERATURE"

Note (1): The fans are installed at the heat-sink of the bypass static switch. (See section 1.5)
Note (2): The NTC is mounted on the heat-sink of bypass static switch (Figure 5.2.5b). Remove wire #35 and unscrew the NTC.
Start
Is the bypass
input external wiring
correct?
Y
Is the bypass input
source phase correct?
END
Start
N
Is the UPS loading
too high?
Y
Reduce loading
END
N
Correct the wiring
Fig 5.2.4a
Temperature sensing
N
Have the
circuit has failed.
(1)
fans failed?
Replace the NTC
Y
Replace the fan
Fig 5.2.5a
Fig 5.2.5b
103
(2)