Xtreme Power Conversion Corporation
E90 Service Manual
Page 41
Uninterruptible Power Supply
LCD display
fault code
UPS alarm
Buzz
LED
The board may be damaged(1 shows the max.
Probability, 2 shows the less probability)
1
2
3
39
Mains voltage
abnormal
once/2s
BATTERY ON
Input voltage
abnormal
40
Mains frequency
abnormal
once/2s
BATTERY ON
Input fre
-
quency
abnormal
41
Bypass ultra
protection
BPS flash
bypass abnor-
mal
42
Bypass ultra
tracking
BPS flash
bypass abnor-
mal
43
Start invalid
Inverter can
-
not be started
due to some
faults
44
Reserve
45
Inverter not on
The inverter
not start after
2min without
any alarm
46
Output switch
not ON
Once per 3s
Detect output
switch
Output signal
in the detec-
tion board is
wrong
Battery replacement
1. Refer to the user’s manual for battery installation operation;
2. Ensure the safe conditions before any operation. Please read chapter 2 ”Security conditions” and chapter 3
”shutdown-disassembly/reassembly UPS” carefully. Be careful when disconnecting the battery. Short circuit will
damage the battery or wiring.
Note:
The battery with the same brand/type/date of manufacture is recommended to ensure a long battery life. The
voltage difference among the batteries should not more than ±150 mV.
We recommended to measure the voltage of each battery during discharge to ensure the voltage differences no
more than ±150mV. The battery pack capacity will be affected if there is one or more battery voltages differ too
much. In the worst case, it will damage the other battery.
The voltage difference should be reduced after a long period of charging.
