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"
Calibration Errors
ERROR
DEFINITION
NO.
Mathematical mistake; division by zero.
Err 1
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 UM597KL_KG 599KL_KG 752KL_KG REV20191121_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 on a level floor
4. Scale is out of calibration
The load on the scale exceeds the
capacity
(600 lb / 272 kg)
CORRECTIVE ACTION
1. Replace batteries according to
instructions on page 13.
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
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
ensure that nothing touches them and that 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 calibration.
The load cell cable connector is not connected
correctly. Check the connection, cables, and
mechanical connection.
See Err 6
19