TROUBLESHOOTING
Refer to the following instructions to check and correct any failure before contacting
Customer Service at 1-800-815-6615.
SYMPTOM
Scale does not
turn on
Questionable
weight or the
scale does not
zero
The display
shows "OVER"
The display
shows "LO Bat"
message
Calibration Errors
ERROR
NO.
Err 1
Mathematical mistake; division by zero.
Cannot calculate calibration factor
Err 2
Weight loaded too low. Cannot
calibrate
Err 3
Unstable weight. Cannot calibrate
Err 5
Calibration disabled
Err 6
High saturation state (high A/D)
Err 7
Low saturation state (low A/D)
P/N UM600KL_600KG_Rev20190416_Web
POSSIBLE CAUSE
1. Dead battery
2. Faulty electrical outlet
3. Bad power supply (Check
LED light at back of display
module to determine if
adapter cord is working)
1. External object interfering with
the scale
2. The display did not show '0.0'
before weighing
3. Scale is not placed on a level floor
4. Scale is out of calibration
The load on the scale exceeds the
capacity (600 lb/272 kg)
The batteries are depleted
DEFINITION
CORRECTIVE ACTION
1. Replace batteries
2. Use a different outlet
3. Replace adapter
1. Remove interfering object
from the scale
2. Ask the patient to get off
the scale, zero the scale
and begin weighing
process again
3. Place the scale on a level
floor and begin weighing
process again
4. Check weight with known
weight value
Remove the excess weight and use
the scale according to its limits
Replace batteries according to
instructions
CHECK/REPLACE
Will show when trying to calibrate with no
calibration weight
While in calibration procedure add more weight in
load mode
Check the load cells mechanical surroundings
and see nothing touches them and the cables are
well connected
On the back of the display, locate the silver
extended screw and plastic tab. Use a nut driver
or pliers to remove the tab and gain access to the
push button underneath. Press and release one
time to enable proper calibration. When finished,
toggle the calibration switch to enable
The load cell cable is not connected correctly.
Check the connection, cables, and mechanical
connection.
See Err 6
16