AND Multi Function Weighing Indicator AD-4402 Instruction Manual page 74

Kind No.
When the displayed value can not be set to zero with re-zero or tare,
the message is displayed.
Zero error
ZR.ERR
0 Dispaly can not be zeroed by zero compensation.
1 Dispaly can not be zeroed by tare operation.
When the weighing value is out of range and emergency stop is
performed, this symbol is displayed.
Alarm 1
1 Weighing value is out of range.
ALARM 1
9 Emergency stop has been performed.
It can not weigh. Check the weighing system.
Example: loadcell cable, connctors.
A/D converter is positve over count.
1
Alarm 2 Check the loadcell cable.
A/D converter is negative over count.
ALARM 2
2
Check the loadcell cable.
RAM error.
4
Check the backup battery
Description
Page 72 AD-4402