American Weigh Scales (AWS) AC PRO-500 - Manual (Page 7)

XI. Error Codes
1. OUTZ - Zero range has shifted. Perform calibration
adjustment. If the problem persists, the load cell may
be permanently damaged due to overloading.
2. O-LD - Maximum capacity exceeded. Remove the
extra weight to avoid damaging the load cell.
3. LO - Batteries are low. Replace the batteries.
4. UNSE - The scale is unstable. Use the scale in a
more stable position.
ACP-200 ACP-500
Max. Capacity 200g 500g
Readability 0.01g 0.1g
Power 2 x AAA Batteries
Dimensions 2.8 x 4.8 x 0.8 in.
Platform Dimensions 2.5 x 3.0 in.
Warranty 10 Year Limited Warranty