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SECTION 8
TROUBLESHOOTING
8.1
Error Codes
Error codes inform the user of an out-of-range value or meter
problem. Table 16 outlines the operator assistance codes available
in the meter series.
Table 16 Error Codes
Error
Code
Meaning Possible
Remedy
1
Unconfigured instrument (no data in
EEPROM)
Call or return to Hach service.
2
pH calibration error (latest point produced
invalid slope)—probably read the wrong
buffer, could also indicate an electrode failure.
Verify you have the correct buffer and
reread.
3
Reading stabilized at a pH in between valid
buffers, possibly caused by reading the wrong
buffer, or electrode failure.
Verify you have the correct buffer and
reread.
4
Could not write stored data to EEPROM
Call or return to Hach service.
5
Conductivity calibration error—Probably read
the wrong conductivity buffer, or electrode
failure.
Verify you have the correct buffer and
reread.
6
DO calibration error—Probably caused by
calibrating with an unpolarized electrode or
using the wrong calibration standard.
Wait at least 20–30 minutes longer or
use the correct standard and redo the
DO calibration.
7
Measurement overrange error—The
parameter measurement cannot be
calculated correctly
pH/mV outside of ±2000 mV range
pH electrode may be out of solution, or
broken.
DO concentration > 30 mg/L
DO electrode may need more time to
polarize after attaching to the meter.
Conductivity—either Raw (uncompensated)
conductivity or displayed conductivity >
256 mS/cm or Salinity > 43 or TDS > 50 g/L.
Conductivity electrode may require a
diluted sample to read correctly, or may
need calibrating.
8
Temperature out of range (DO or Salinity)
The DO and Salinity measurement
calculations are only valid within the specified
temperature ranges.
Change the temperature of the sample.
9–13
NA
Call or return to Hach service.
