Sanyo SANUPS A11J Instruction Manual Download

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Troubleshooting

2/3

UPS Status

LCD Indication

LED Status

Countermeasure

-STANDBY-

Green INPUT: Lit

Was

on the LCD panel or

on the unit control panel

pressed accidentally and set to “OFF”?

Perform the correct procedure to set it to “ON.”

－

Green INPUT: Lit

Is the remote OFF signal being input? See §5.4 “External Interfaces,”

and check whether the external control terminal is connected properly.

Power from the terminal
block of the UPS stopped
during operation.

－

Green INPUT: Lit

Is the EPO signal being input? See §5.4 “External Interfaces,” and

check whether the external control terminal is connected properly.

Power from the terminal
block of the UPS stopped
during a power outage.

－

Have the batteries deteriorated?

Check the time to replace the batteries.
The battery service life will vary depending on the ambient
temperature. Early battery replacement is recommended.

Did a power outage occur within the last 12 hours? The remaining

capacity of the batteries may be low. Sufficiently charge the UPS.

The buzzer sounded.

－

The alarm buzzer sounds when a state change, warning, or error

occurs in the UPS.
See §10. “Buzzer Sounds.”

The buzzer does not sound.

－

Is “Buzzer” in the LCD panel setting menu set to “SILENT (stopped).”

See §3.8 “Setting Buzzer Condition” in the

LCD Panel Operating

Manual

and check the setting value.

Nothing is displayed on the
LCD panel.

－

Are the UPS unit and LCD panel connected properly with the

connection cable? See §6.2 “Attaching LCD Panel.”

Cannot operate the LCD
panel.

－

Are the UPS unit and LCD panel connected properly with the

connection cable? See §6.2 “Attaching LCD Panel.”

The LEDs on the unit
control panel do not turn
on.

－

All: Off

MAIN MCCB

set to “ON”?

See §8.1 “UPS Startup” and check the correct operating procedure.

Cannot operate the unit
control panel.

－

Red ALARM: Lit

The UPS has malfunctioned. Contact your supplier or SANYO

DENKI.

Battery power supply
continues.
Power supply switches to

battery power frequently.

Input Error
Input Freq Err
Input Vol Hi
Input Vol Low

Green BACKUP:
Lit

MAIN MCCB

on the unit control panel set to “ON”? If it is set to

“OFF,” set it to “ON.”
(If

MAIN MCCB

is set to the “OFF” during normal operation, the

operation will become the same as for a utility power supply failure
and the power supply will switch to battery power.)

Check that the input voltage and input frequency are within the rated

ranges. See §14.4 “Specifications.”

The UPS does not switch
from bypass power supply
to UPS power supply
(inverter power supply).

－

Check that the forced bypass switch

Forced Bypass

is set to

“

Inverter

.” The forced bypass switch

Forced Bypass

is located

inside the front panel of the UPS. Remove the front panel to check.
See step

⑥

of §6.2 “Attaching LCD Panel.”

If the forced bypass

switch is set to “

Bypass

,” set it to “

Inverter

” and then press

again to switch to UPS power supply.

If “Overload Recovery Operation” in the LCD panel setting menu is

set to “

Auto Ret BYP

,” the UPS switches to bypass power supply when

there is an overload, and after the overload continues for a certain
period of time, switches back to UPS power supply automatically. If
the overload condition persists, the UPS switches to bypass power
again, and this cycle is repeated. See §3.10 “Setting Overload
Recovery Operation” in the

LCD Panel Operating Manual

If “Overload Recovery Operation” in the LCD panel setting menu is

set to “

Stay on BYP

,” bypass power supply continues when the overload

condition continues. When the overload condition is resolved, the UPS
switches to UPS power supply.
If the voltage of the utility power supply is low and the load current is
at or below the overload detection threshold when the UPS switches
to bypass power supply, the UPS continues to switch between UPS
power supply and bypass power supply. See §3.10 “Setting Overload
Recovery Operation” in the

LCD Panel Operating Manual