Lowell power UPS9LI-1500 User manual

Online Uninterruptible Power Supply (w/Lithium Battery)
User Manual
Lowell Models UPS9LI-1500, UPS9LI-2000, UPS9LI-3000
©2022 Lowell Manufacturing Company – Version: 1.0 (8.4.22)

Table of Contents
1. Important Safety Warning ............................................................................................................................. 1
1.1. Transportation ........................................................................................................................................ 1
1.2. Preparation .............................................................................................................................................. 1
1.3. Installation ............................................................................................................................................... 1
1.4. Operation ................................................................................................................................................ 1
1.5. Maintenance, Service and Faults ............................................................................................................. 2
2. Installation and set-up ................................................................................................................................... 3
2.1. Rear Panel View ....................................................................................................................................... 3
2.2. Operating Principle .................................................................................................................................. 4
2.3. Install the UPS ........................................................................................................................................ 4
2.4. Set-up the UPS ......................................................................................................................................... 5
2.5. Battery Replacement ............................................................................................................................... 7
3. Operations ...................................................................................................................................................... 9
3.1. Button Operation .................................................................................................................................... 9
3.2. LCD Panel ................................................................................................................................................. 9
3.3. Audible Alarm ........................................................................................................................................ 11
3.4. LCD display wordings index ................................................................................................................... 11
3.5. UPS Setting ............................................................................................................................................ 12
3.6. Operating Mode Description ................................................................................................................. 16
3.7. Faults Reference Code ........................................................................................................................... 16
3.8. Warning Indicator .................................................................................................................................. 17
4. Troubleshooting ........................................................................................................................................... 18
5. Storage and Maintenance ............................................................................................................................ 21
6. Specifications ................................................................................................................................................ 22
7. Warranty ....................................................................................................................................................... 23

1
1. Important Safety Warning
Please comply with all warnings and operating instructions in this manual strictly. Save this manual properly and
read carefully the following instructions before installing the unit. Do not operate this unit before reading
through all safety information and operating instructions carefully.
1-1. Transportation
• Please transport the UPS system only in the original package to protect against shock and impact.
1-2. Preparation
• Condensation may occur if the UPS system is moved directly from cold to warm environment. The UPS
system must be absolutely dry before being installed. Please allow at least two hours for the UPS
system to acclimate the environment.
• Do not install the UPS system near water or in moist environments.
• Do not install the UPS system where it would be exposed to direct sunlight or near heater.
• Do not block ventilation holes in the UPS housing.
1-3. Installation
• Do not connect appliances or devices which would overload the UPS system (e.g. laser printers) to the
UPS output sockets.
• Place cables in such a way that no one can step on or trip over them.
• Do not connect domestic appliances such as hair dryers to UPS output sockets.
• The UPS can be operated by any individuals with no previous experience.
• Connect the UPS system only to an earthed shockproof outlet which must be easily accessible and close
to the UPS system.
• Please use only VDE-tested, CE-marked (or UL-marked for 100/110/115/120/125 VAC models) mains
cable (e.g. the mains cable of your computer) to connect the UPS system to the building wiring outlet
(shockproof outlet).
• Please use only VDE-tested, CE-marked (or UL-marked for 100/110/115/120/125 VAC models) power
cables to connect the loads to the UPS system.
• When installing the equipment, it should ensure that the sum of the leakage current of the UPS and the
connected devices does not exceed 3.5mA.
• Temperature Rating - Units are considered acceptable for use in a maximum ambient of 40°C (104°F).
• For Pluggable Equipment - The socket-outlet shall be installed near the equipment and shall be easily
accessible.
• CAUTION: The unit is heavy. Lifting the unit requires a minimum of two people.
• Batteries with minimum case flame rating V-2 are intended for use in a computer room as defined in
the Standard for the Protection of Information Technology Equipment, ANSI/NFAP 75. Batteries with
case flame rating HB are not intended for use in a computer room. (US installations only.)
1-4. Operation
• Do not disconnect the mains cable on the UPS system or the building wiring outlet (shockproof socket
outlet) during operations since this would cancel the protective earthing of the UPS system and of all
connected loads.
• The UPS system features its own, internal current source (batteries). The UPS output sockets or output
terminals block may be electrically live even if the UPS system is not connected to the building wiring
outlet.
• In order to fully disconnect the UPS system, first press the OFF/Enter button before disconnecting the
mains.

2
• Prevent fluids or other foreign objects from inside of the UPS system.
• The EPO and USB circuits are an IEC 60950-1 safety extra low voltage (SELV) circuit. This circuit must
be separated from any hazardous voltage circuits by reinforced insulation.
1-5. Maintenance, service and faults
• The UPS system operates with hazardous voltages. Repairs may be carried out only by qualified
maintenance personnel.
• Caution - risk of electric shock. Even after the unit is disconnected from the mains (building wiring
outlet), components inside the UPS system are still connected to the battery and electrically live and
dangerous.
• Before carrying out any kind of service and/or maintenance, disconnect the batteries and verify that
no current is present and no hazardous voltage exists in the terminals of high capability capacitor such
as BUS-capacitors.
• To avoid electrical shock, turn off the unit and unplug it from the AC power source before servicing the
battery
• Only persons are adequately familiar with batteries and with the required precautionary measures may
replace batteries and supervise operations. Unauthorized persons must be kept well away from
the batteries.
• Caution - risk of electric shock. The battery circuit is not isolated from the input voltage. Hazardous
voltages may occur between the battery terminals and the ground. Before touching, please verify that
no voltage is present!
• Caution - Do not dispose of batteries in a fire. The batteries may explode.
• Caution - Do not open or mutilate batteries. Released electrolyte is harmful to the skin and eyes. It may
be toxic.
• Batteries may cause electric shock and have a high short-circuit current. Please take the precautionary
measures specified below and any other measures necessary when working with batteries:
a) Remove watches, rings, or other metal objects.
b) Use tools with insulated handles.
c) Wear rubber gloves and boots.
d) Do not lay tools or metal parts on top of batteries.
e) Disconnect charging source and load prior to installing or maintaining the battery.
f) Remove battery grounds during installation and maintenance to reduce likelihood of shock.
Remove the connection from ground if any part of the battery is determined to be grounded.
• When changing batteries, install the same number and same type of batteries or battery packs.
• Please replace the fuse only with the same type and amperage in order to avoid fire hazards.
• Do not dismantle the UPS system.
Only for 100/110/115/120/125 VAC system:
• NOTE: This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
• WARNING: Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.

3
2. Installation and setup
NOTE: Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. Please
keep the original package in a safe place for future use.
2-1. Rear panel view
NEMA Type 1.5K 2K
3K
1. Programmable outlets: connect to non-critical loads
2. Output receptacles: connect to mission-critical loads
3. AC input
4. Network/Fax/Modem surge protection
5. USB communication port
6. RS-232 communication port
7. SNMP intelligent slot
8. Emergency power off function connector (EPO)
9. External battery connection

4
2-2. Operating principle
The operating principle of the UPS is shown as below
2-3. Install the UPS
For safety consideration, the UPS is shipped out from factory without connecting battery wires. Before install
the UPS, please follow below steps to re-connect battery wires first.
Remove front panel. Connect the AC input and Put the front panel back
re-connect battery wires. on the unit.
This UPS can be either displayed on the desk or mounted in the 19” rack chassis. Please choose proper
installation to position this UPS.
Rackmount Installation
Step 1 Step 2
EMI
/
RFI
Filters
Battery
Charger
Battery
DC
-
to
-
DC
Converter
Inverter
Rectifier
/
PFC
nput
I
Output
Dynamic
Bypass

5
Tower Stand Installation
Step 1 Step 2 Step 3
2-4. Setup the UPS
Before installing the UPS, please read below to select proper location to install UPS.
1. UPS should be placed on the flat and clean surface. Place it in an area away from vibration, dust,
humidity, high temperature, flammable liquids, gases, corrosive and conductive contaminants. Install
the UPS indoors in a clean environment, where it is away from window and door. Maintain minimum
clearance of 100mm in the bottom of the UPS to avoid dust and high temperature.
2. It’s required to maintain maximum altitude of 11,500ft to keep UPS normal operation at full load UPS.
3. Place UPS: It’s equipped with fan for cooling. Therefore, place the UPS in a well-ventilated area. It’s
required to maintain minimum clearance of 100mm in the front of the UPS and 300mm in the back and
two sides of the UPS for heat dissipation and easy-maintenance.
Step 1: UPS input connection
Plug the UPS into a two-pole, three-wire, grounded receptacle only. Avoid using extension cords.
• For 100/110/115/120/125/127VAC models: The power cord is attached to the UPS. The input plug is a
NEMA 5-15P for 1.5K models, NEMA 5-20P for 2K model and NEMA L5-30P for 3K model.
• To reduce the risk of fire, connect only to a circuit provided with (@) A maximum branch circuit
overcurrent protection in accordance with the National Electrical Code, ANSI/NFPA 70 and the
Canadian Electrical Code, Part I, C22.1".
Model
(@)
UPS9LI-1500
20A
UPS9LI-2000
20A
UPS9LI-3000
40A
Note: Check if the site wiring fault indicator lights up in LCD panel. It will be illuminated when the UPS
is plugged into an improperly wired utility power outlet (Refer to Troubleshooting section).
Step 2: UPS output connection
There two kinds of outputs: programmable outlets and general outlets. Please connect non-critical devices to
the programmable outlets and critical devices to the general outlets. During power failure, you may extend the
backup time to critical devices by setting shorter backup time for non-critical devices.

6
Step 3: Communication connection
Communication port:
USB port RS-232 port Intelligent slot
To allow for unattended UPS shutdown/start-up and status monitoring, connect the communication cable one
end to the USB/RS-232 port and the other to the communication port of your PC. With the monitoring
software installed, you can schedule UPS shutdown/start-up and monitor UPS status through PC.
The UPS is equipped with intelligent slot perfect for either SNMP or AS400 card. When installing either SNMP
or AS400 card in the UPS, it will provide advanced communication and monitoring options.
Step 4: Network connection
Network/Fax/Phone surge port
Connect a single modem/phone/fax line into surge-protected “IN” outlet on the back panel of the UPS unit.
Connect from “OUT” outlet to the equipment with another modem/fax/phone line cable.
Step 5: Disable and enable EPO function
This UPS is equipped with EPO function. By default, the UPS is delivered from factory with Pin 1 and pin 2 closed
(a metal plate is connected to Pin 1 and Pin2) for UPS normal operation. To activate EPO function, remove two
screws on EPO port and metal plate will be removed.
Note: The EPO function logic can be set up via LCD setting. Please refer to program 16 in UPS setting for the
details.
It’s in closed status for UPS
normal opera
tion
as default
.
To activate EPO
function, remove
these two screws.

7
Step 6: Turn on the UPS
Press the ON/Mute button on the front panel for two seconds to power on the UPS.
Note: The battery charges fully during the first five hours of normal operation.
Do not expect full battery run capability during this initial charge period.
Step 8: Install software
For optimal computer system protection, install UPS monitoring software to fully configure UPS shutdown. Use
supplied RS-232 or USB communication cable to connect RS-232/USB port of UPS and RS-232/USB port of PC.
Then, follow below steps to install monitoring software.
1. Insert the included installation CD into CD-ROM drive and then follow the on-screen instructions to
proceed software installation. If there no screen shows 1 minute after inserting the CD, please execute
setup.exe file for initiating software installation.
2. Follow the on-screen instructions to install the software.
3. When your computer restarts, the monitoring software will appear as an orange plug icon located in
the system tray, near the clock.
2-5. Battery Replacement
When the icons of and are flashing in LCD display and alarm is sounding every 2 seconds, it’s time to
replace batteries. Contact your service representative to replace batteries. Batteries can be replaced easily
without turning the UPS off or disconnecting the load. If you prefer to remove input power to change the
batteries, press the OFF button on the front panel for two seconds to power off the UPS and switch off utility
power where the UPS is connected.
NOTE 1 : DO NOT DISCONNECT the batteries while the UPS is in Battery mode.
NOTE 2 : A small amount of arcing may occur when connecting the internal batteries. This is normal condition
and no harm for personnel. Connect the cables quickly and firmly.
NOTE 3 : This UPS is equipped with internal batteries and only service person can replace the batteries.
NOTE 4 : Upon battery disconnection, equipment is not protected from power outages.
CAUTION!! Consider all warnings, cautions, and notes before replacing batteries.

8

9
3. Operations
3-1. Button operation
Button
Function
ON/Mute
Button
➢ Turn on the UPS: Press and hold ON/Mute button for at least 2 seconds to turn on the
UPS.
➢ Mute the alarm: After the UPS is turned on in battery mode, press and hold this
button for at least 3 seconds to disable or enable the alarm system. But it’s not
applied to the situations when warnings or errors occur.
➢ Up key: Press this button to display previous selection in UPS setting mode.
➢ Switch to UPS self-test mode: Press ON/Mute buttons for 3 seconds to enter UPS self-
testing while in AC mode, ECO mode, or converter mode.
OFF/Enter
Button
➢ Turn off the UPS: Press and hold this button at least 2 seconds to turn off the UPS.
UPS will be in standby mode under power normal or transfer to Bypass mode if the
Bypass enable setting by pressing this button.
➢ Confirm selection key: Press this button to confirm selection in UPS setting mode.
Select
Button
➢ Switch LCD message: Press this button to change the LCD message for input voltage,
input frequency, input current, battery voltage, battery current, battery capacity,
ambient temperature, output voltage, output frequency, load current and load
percent.
➢ Setting mode: Press and hold this button for 3 seconds to enter UPS setting mode
when Standby and Bypass mode.
➢ Down key: Press this button to display next selection in UPS setting mode.
ON/Mute
+ Select
Button
➢ Switch to bypass mode: When the main power is normal, press ON/Mute and Select
buttons simultaneously for 3 seconds. Then UPS will enter to bypass mode. This action
will be ineffective when the input voltage is out of acceptable range.
➢ Exit setting mode or return to the upper menu: When working in setting mode, press
ON/Mute and Select buttons simultaneously for 0.2 seconds to return to the upper
menu. If it’s already in top menu, press these two buttons at the same time to exit the
setting mode.
3-2. LCD Panel

10
Display
Function
Backup time information
Indicates the estimated backup time.
H: hours, M: minute, S: second.
Configuration and fault information
Indicates the configuration items, and the configuration items are listed in details in
section 3-5.
Indicates the warning and fault codes, and the codes are listed in details in section 3-7
and 3-8.
Mute operation
Indicates that the UPS alarm is disabled.
Input, Battery, Temperature, Output & Load information
Indicates the input voltage, input frequency, input current, battery voltage, battery
current, battery capacity, ambient temperature, output voltage, output frequency, load
current and load percent.
k: kilo, W: watt, V: voltage, A: ampere, %: percent, ℃: centigrade degree, Hz: frequency
Load Information
Indicates the load level by 0-24%, 25-49%, 50-74% and 75-100%.
Indicates overload.
Programmable Outlets Information
Indicates that programmable management outlets are working.
Mode Operation Information
Indicates the UPS connects to the mains.
Indicates the battery is working.
Indicates charging status
Indicates the bypass circuit is working.
Indicates the ECO mode is enabled.
Indicates the AC to DC circuit is working.
Indicates the PFC circuit is working.
Indicates the inverter circuit is working.
Indicates the UPS is working in converter mode.
Indicates the output is working.
Battery Information
Indicates the battery level by 0-24%, 25-49%, 50-74%, and 75-100%.
Indicates low battery.

11
3-3. Audible Alarm
Battery Mode
Sounding every 5 seconds
Low Battery
Sounding every 2 seconds
Overload
Sounding every second
Fault
Continuously sounding
Bypass Mode
Sounding every 10 seconds
3-4. LCD display wordings index
Abbreviation
Display content
Meaning
ENA
Enable
DIS
Disable
ESC
Escape
HLS
High loss
LLS
Low loss
AO
Active open
AC
Active close
EAT
Estimated autonomy time
RAT
Running autonomy time
SD
Shutdown
OK
OK
ON
ON
BL
Battery Low
OL
Over Load
OI
Over input current
NC
Battery No Connect
OC
Over Charge
SF
Site wiring fault
EP
EPO
TP
Temperature
CH
Charger
BF
Battery Fault
BV
Bypass Out Range
FU
Bypass frequency unstable
BR
Battery Replace
EE
EEPROM error

12
3-5. UPS Setting
• 01: Output voltage setting
Interface
Setting
For 120 Models, You may choose the following output voltage:
100: presents output voltage is 100Vac
110: presents output voltage is 110Vac
115: presents output voltage is 115Vac
120: presents output voltage is 120Vac (Default)
125: presents output voltage is 125Vac
• 02: Frequency Converter enable/disable
Interface
Setting
Parameter 2: Enable or disable converter mode. You may choose the
following two options:
CF ENA: converter mode enable
CF DIS: converter mode disable (Default)
• 03: Output frequency setting
Interface
Setting
Parameter 2: Output frequency setting.
You may set the initial frequency on battery mode:
BAT 50: presents output frequency is 50Hz
BAT 60: presents output frequency is 60Hz
If converter mode is enabled, you may choose the following output
frequency:
CF 50: presents output frequency is 50Hz
CF 60: presents output frequency is 60Hz

13
• 04: ECO enable/disable
Interface
Setting
Parameter 2: Enable or disable ECO function. You may choose the
following two options:
ENA: ECO mode enable
DIS: ECO mode disable (Default)
• 05: ECO voltage range setting
Interface
Setting
Parameter 2: Set the acceptable high voltage point and low voltage
point for ECO mode by pressing Down key or Up key.
HLS: High loss voltage in ECO mode in parameter 2.
For 120 Models, the setting range in parameter 3 is from +3V to +12V
of the nominal voltage.
(Default: +6V)
LLS: Low loss voltage in ECO mode in parameter 2.
For 120 Models, the setting voltage in parameter 3 is from -3V to -12V
of the nominal voltage. (Default: -6V)
• 06: Bypass enable/disable when UPS is off
Interface
Setting
Parameter 2: Enable or disable Bypass function. You may choose the
following two options:
ENA: Bypass enable
DIS: Bypass disable (Default)
• 07: Bypass voltage range setting
Interface
Setting
Parameter 2: Set the acceptable high voltage point and acceptable
low voltage point for Bypass mode by pressing the Down key or Up
key.
HLS: Bypass high voltage point
For 120 Models:
120-140: setting the high voltage point in parameter 3
from 120Vac to 140Vac. (Default: 132Vac)
LLS: Bypass low voltage point
For 120 Models:
85-115: setting the low voltage point in parameter 3 from
85Vac to 115Vac. (Default: 85Vac)

14
• 08: Bypass frequency range setting
Interface
Setting
Parameter 2: Set the acceptable high frequency point and acceptable
low frequency point for Bypass mode by pressing the Down key or Up
key.
HLS: Bypass high frequency point For 50Hz
output frequency models:
51-55Hz: setting the frequency high loss point from 51Hz to
55HZ(Default: 53.0Hz)
For 60Hz output frequency models:
61-65Hz: setting the frequency high loss point from 61Hz to
65Hz(Default: 63.0Hz)
LLS: Bypass low Frequency point
For 50Hz output frequency models:
45-49Hz: setting the frequency low loss point from 45Hz to
49HZ(Default: 47.0Hz)
For 60Hz output frequency models:
55-59Hz: setting the frequency low loss point from 55Hz to
59Hz(Default: 57.0Hz)
• 09: Programmable outlets enable/disable
Interface
Setting
Parameter 2: Enable or disable programmable outlets.
ENA: Programmable outlets enable
DIS: Programmable outlets disable (Default)
• 10: Programmable outlets setting
Interface
Setting
Parameter 2: Set up backup time limits for programmable outlets.
0-999: setting the backup time limits in minutes from 0-999 for
programmable outlets which connect to non-critical devices on
battery mode. (Default: 999)
• 11: Autonomy limitation setting
Interface
Setting
Parameter 2: Set up backup time on battery mode for general outlets.
0-999: setting the backup time in minutes from 0-999 for general
outlets on battery mode.
DIS: Disable the autonomy limitation and the backup time will depend
on battery capacity. (Default)
Note: When setting as “0”, the backup time will be only 10 seconds.

15
• 13: Maximum charger current setting
Interface
Setting
Parameter 2: Set up the charger maximum current.
1/2/4/6/8: setting the charger maximum current
1/2/4/6/8 in Ampere. (Default: 4A)
Recharge time VS charging current is as below table.
Unit: hours
1500VA
2000VA
3000VA
8A
0.7
1.4
1.1
6A
0.9
1.9
1.4
4A
1.4
2.9
2.1
2A
2.8
5.7
4.2
1A
5.6
11.4
8.5
• 16: EPO logic setting
Interface
Setting
Parameter 2: Set up the EPO function control logic.
AO: Active Open (Default). When AO is selected as EPO logic, it will
activate EPO function with Pin 1 and Pin 2 in open status.
AC: Active Close. When AC is selected as EPO logic, it will activate EPO
function with Pin 1 and Pin 2 in close status.
• 17: Site fault detection enable/disable
Interface
Setting
Parameter 2: Enable or disable site fault detection. You may choose
the following:
ENA: Site fault detection enable (Default for 120 models)
• 18: Display setting for autonomy time
Interface
Setting
Parameter 2: Set up the display setting for autonomy time
EAT: If EAT is selected, it will display the remaining autonomy time.
(Default)
RAT: If RAT is selected, it will show accumulated autonomy time so far.
• 00: Exit setting
Interface
Setting
Exit the setting mode.

16
3-6. Operating Mode Description
Operating mode
Description
LCD display
Online mode
When the input voltage is within acceptable range, UPS
will provide pure and stable AC power to output. The UPS
will also charge the battery at online mode.
ECO mode
Energy saving mode:
When the input voltage is within voltage regulation range,
UPS will bypass voltage to output for energy saving. The
UPS will also charge the battery at ECO mode.
Frequency
Converter mode
When input frequency is within 40 Hz to 70 Hz, the UPS
can be set at a constant output frequency, 50 Hz or 60 Hz.
The UPS will still charge battery under this mode.
Battery mode
When the input voltage is beyond the acceptable range or
power failure, the UPS will backup power from battery
and alarm is sounding every 5 seconds.
Bypass mode
When input voltage is within acceptable range but UPS is
overload, UPS will enter bypass mode or bypass mode can
be set by front panel. Alarm is sounding every 10 seconds.
Standby mode
UPS is powered off and no output supply power, but still
can charge batteries.
Fault mode
When a fault has occurred, the ERROR icon and the fault
code will be displayed.
3-7. Faults Reference Code
Fault event
Fault code
Icon
Fault event
Fault code
Icon
Bus start fail
01
x
Battery voltage too high
27
x
Bus over
02
x
Battery voltage too low
28
x
Bus under
03
x
Charger output short
2A
x
Inverter soft start fail
11
x
Over temperature
41
x
Inverter voltage high
12
x
Overload
43
Inverter voltage Low
13
x
Charger failure
45
x
Inverter output short
14
x
Over input current
49
x

17
3-8. Warning indicator
Warning
Icon (flashing)
Code
Alarm
Low Battery
Sounding every 2 seconds
Overload
Sounding every second
Over input current
Sounding 2 beep every 10 seconds
Battery is not connected
Sounding every 2 seconds
Over Charge
Sounding every 2 seconds
Site wiring fault
Sounding every 2 seconds
EPO enable
Sounding every 2 seconds
Over temperature
Sounding every 2 seconds
Charger failure
Sounding every 2 seconds
Battery fault
Sounding every 2 seconds
(At this time, UPS is off to remind users
something wrong with battery)
Out of bypass voltage range
Sounding every 2 seconds
Bypass frequency unstable
Sounding every 2 seconds
Battery replacement
Sounding every 2 seconds
EEPROM error
Sounding every 2 seconds
NOTE: “Site Wiring Fault” function can be enabled/disabled via software. Please check software manual for the
details.

18
4. Troubleshooting
If the UPS system does not operate correctly, please solve the problem by using the table below.
Icon and/or
Code
Symptom
Possible cause
Remedy
No indication and alarm
even though the mains is
normal.
The AC input power is not connected
well.
Check if input power cord firmly
connected to the mains.
The AC input is connected to the
UPS output.
Plug AC input power cord to AC
input correctly.
The icon and the warning
code flash on LCD display
and alarm is sounding every
2 seconds.
EPO function is activated.
Set the circuit in closed position
to disable EPO function.
The icons and warning code
flash on LCD display. Alarm
is sounding every 2
seconds.
Line and neutral conductors of
UPS input are reversed.
Rotate mains power socket by
180° and then connect to UPS
system.
The icons and warning code
flash on LCD display. Alarm
is sounding every 2
seconds.
The external or internal battery is
incorrectly connected.
Check if all batteries are
connected well.
Fault code is shown as 27
on LCD display and alarm is
continuously sounding.
Battery voltage is too high or the
charger is fault.
Contact your dealer.
Fault code is shown as 28
on LCD display and alarm is
continuously sounding.
Battery voltage is too low or the
charger is fault.
Contact your dealer.
The icons and warning code
flash on LCD display. Alarm
is sounding every second.
UPS is overload
Remove excess loads from UPS
output.
UPS is overloaded. Devices
connected to the UPS are fed
directly by the electrical network via
the Bypass.
Remove excess loads from UPS
output.
After repetitive overloads, the UPS is
locked in the Bypass mode.
Connected devices are fed directly
by the mains.
Remove excess loads from UPS
output first. Then shut down the
UPS and restart it.
Fault code is shown as 49
on LCD display and alarm is
continuously sounding.
UPS is over input current.
Remove excess loads from UPS
output.
Fault code is shown as 43
and icon is lighting on LCD
display. Alarm is
continuously sounding.
The UPS shut down automatically
because of overload at the UPS
output.
Remove excess loads from UPS
output and restart it.