P/N UM600KL_600KG_Rev20191122_Web
16
TROUBLESHOOTING
Refer to the following instructions to check and correct any failure before contacting
Customer Service at 1-800-815-6615.
SYMPTOM
POSSIBLE CAUSE
CORRECTIVE ACTION
Scale does not
turn on
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. Replace batteries
2. Use a different outlet
3. Replace adapter
Questionable
weight or the
scale does not
zero
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
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
The display
shows “OVER”
The load on the scale exceeds the
capacity (600 lb/272 kg)
Remove the excess weight and use
the scale according to its limits
The display
shows “LO Bat”
message
The batteries are depleted
Replace batteries according to
instructions
Calibration Errors
ERROR
NO.
DEFINITION
CHECK/REPLACE
Err 1
Mathematical mistake; division by zero.
Cannot calculate calibration factor
Will show when trying to calibrate with no
calibration weight
Err 2
Weight loaded too low. Cannot
calibrate
While in calibration procedure add more weight in
load mode
Err 3
Unstable weight. Cannot calibrate
Check the load cells mechanical surroundings
and see nothing touches them and the cables are
well connected
Err 5
Calibration disabled
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
Err 6
High saturation state (high A/D)
The load cell cable is not connected correctly.
Check the connection, cables, and mechanical
connection.
Err 7
Low saturation state (low A/D)
See Err 6
