CHAPTER 2 DIAGNOSTIC GUIDE
Ohaus Corporation www.ohaus.com
18
Navigator Series Service Manual
Defective Interface or cable
Replace
Lo ref
Reference weight is too low
Increase reference weight or
continue to
weigh with less accurate results
.
ref err
Parts counting
– sample weight
<1d.
Shows error - exits mode or goes to
[
Clr.ApU
].
Err 3.0 Cal
Incorrect calibration weight
See Table 4.1 for correct weights
Err 4.4 full
RS232 buffer is full
Set Handshake on, see Interface User
Manual.
Err 8.1
ˉ
Load
ˉ
Power on zero range exceeded
Clear pan, check Shipping Lock setting
Zero has drifted
View RAMP (in scale service menu) to
check Load Cell, and then calibrate.
Load Cell is damaged
Replace Load Cell.
Err 8.2 _Load_
Power on zero under range,
pan
was removed prior to power on
Install pan, check Shipping Lock setting
and re-zero.
Zero has shifted
View RAMP (in scale service menu) to
check Load Cell, and then calibrate.
Load Cell is damaged
Replace Load Cell.
Err 8.3
ˉ
Load
ˉ
Overload (>cap+9e)
Load exceeds balance maximum capacity,
remove weight from the pan
Err 8.4 _Load_
Under load
Reading below min. range - Re-install pan.
Err 8.5 tArE
Tare out of range
1. Switch to a unit where the tare <=Max;
2. Clear the tare --- No load on the pan,
Press
“tare” button;
3. Clear the tare --- Perform
“Zero”
operation if it is allowable, this will also
clear the tare;
4. New tare is established --- Perform tare
if load <=Max;
Err 8.6 999999
Displayed value >999999
Result exceeds display capability.
Err 9 Data
Internal data error.
Contact Ohaus or an authorized service
agent
Err 13 mMEmM
Fail to write EEPROM.
Contact Ohaus or an authorized service
agent
Err 53 CSumM
Invalid checksum data
Contact Ohaus or an authorized service
agent
Some Menus or
menu settings
are locked out or
cannot be
changed.
Menu Lock switch is “on”.
Non-approved models: turn Menu Lock
switch off. Approved models will require
“re-sealing” of the scale if the switch is
moved.
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