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For D.O, probe, connect the D.O probe with meter, turn on the meter and leave it
for at least one day to activate the D.O. Probe, and then proceed the D.O.
calibration. Keep the D.O. Probe connected with meter after using is suggested.
Besides, check if the probe electrode requires routine maintenance.
Error code E04
1. E04 means the original data error are in error, only for pH and Conductivity.
Solution:
1. Check whether the measured temp. is over range. If yes, leave the probe in
normal tap water at room temp. for 30 mins to cancel E04 from display.
Error code E13
1. E13 means pH probe calibration error
Solution:
1. Run pH calibration again. While doing this, make sure pH buffer is correct and
fresh to get good result.
Error code E16
1. E16 means Cell constant of Cond prober is out of the range
Solution:
1. Re-turn on meter several times to cancel the error code from display.
2. Try to calibrate the conductivity probe to cancel E16 from display
Error code E21
1. This is for D.O. probe, means the temp. between measurement and calibration is
differed for > 10 C
Solution:
1. Run the D.O. 100% calibration again in air at the place where the temp. is closed
to measuring liquid. EX: if your testing pond is 35C, do the calibration in 35C air,
don't do the calibration in cool air-conditioned room.
Error code E31
1. E31 means the measuring circuit of device hardware failure.
Solution:
1. Power on/off several times to fix.
Error code E32
1. E32 means the memory IC of device hardware failure
Solution:
1.Power on/off several times to fix.
