Tripp Lite SU60KX manual Bypass FAN Failure, 12a 12b 12c

5 Troubleshooting (continued)

5.2 Troubleshooting Flow Charts (continued)

5.2.12 “BYPASS FAN FAILURE”

Start

Is the UPS in bypass mode?

Y

Is

fan A spinning?

Y

Replace the S board

or M board (1)

N

N

N

Is

fan C spinning?

Y

Replace the P board or M board (1)

Is

fan B spinning?

Y

Fan A failed

Replace fan A(2)

Do fans

work normally after

restarting UPS?

NFan C failed Replace fan C (4)

N	Does fan C	Y
	work normally after
	restarting UPS?

Fan A and B failed N Replace fan A(2) and

fan B(3)

Y

END

Fig 5.2.12a

Note (1): For the location of the NH-SYS-P and/or NH-SYS-M board, turn to section 1.5. To replace the NHS-SYS-M board, remove the EEPROM chip from the old NHS-SYS-M board and insert it into the new one.

Note (2): Fan A is the main fan for the bypass static switch (Figure 5.2.12b).

Note (3): Fan B is the redundancy fan for the bypass static switch (Figure 5-16).

Note (4): Fan C is the main fan for the filter (Figure 5.2.12c).

Fig 5.2.12b Fig 5.2.12c

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