17
4.0 Trouble Shooting
4.1
For PTS Module
Problem
Possible Cause
Remedy
No output available from
PTS.
External
AC circuit breaker may be
OPEN.
Close the external AC input breaker.
Line AC power is not available.
Check if utility is available with the AC
voltmeter and contact Utility Company.
Wiring error on PTS terminal
blocks.
Correct wirings on PTS.
PTS fault.
If utility power voltage is present at AC
IN
“L” and “N”
on the PTS terminal
blocks, replace the PTS.
PTS is not allowed to
transfer to battery mode.
UPS output power is not connected
to PTS.
Verif
y if power cord from “UPS OUT” on
PTS is properly connected to the AC
output terminal blocks on UPS.
“UPS INPUT” circuit breaker
on
PTS is open status.
Reset breaker.
Black and red control wires from
PTS are not connected to PTS
control connector of UPS.
Connect black and red control wires
from PTS-to-PTS control connector of
UPS.
48VDC signal not available at the
PTS control connector on the UPS.
Replace UPS.
PTS fault.
Replace PTS
UPS does not return back
to Line mode.
Line power is missing.
Veri
fy if power cord from “UPS IN” on
PTS is properly connected to the AC
input terminal blocks on UPS.
Verify if the “UPS INPUT” circuit breaker
on PTS is closed status.
Verify if AC input circuit breaker on UPS
is closed status.
Ensure that Line input is present.
