HND-R106
HND-R106 K09/0422
page 25
16. Error and System Messages
Display
Description
What to do?
No display or
confused
characters, device
does not react on
keypress
Battery empty
Mains operation: wrong voltage or
polarity
System error
Device defective
Replace battery
Check power supply, replace it when necessary
Disconnect battery and power supplies, wait
shortly, then reconnect
Return to manufacturer for repair
Measured value above allowable range
Sensor defective
Check: Measuring value not within sensor range?
-> measuring value to high!
Return to manufacturer for repair
Measured value below allowable range
Sensor defective
Check: Measuring value not within sensor range?
-> measuring value to low!
Return to manufacturer for repair
System error
Value extremely out of measuring range
Return to manufacturer for repair
Check: Value not within sensor range?
> CAL <
CAL flashing in
display
Either preset calibration interval has
expired or last calibration is not valid
Device has to be calibrated!
Neutral buffer not permissible
Wrong buffer solution
Buffer solution defective
Electrode defective
Always use neutral buffer as first solution
(exception: 1 point calibration)
Use new buffer solution
Clean electrode and calibrate again, if error
occurs again -> replace electrode
Slope is too low Electrode defective
Buffer solution defective
Replace electrode
Use new buffer solution
Slope is too high
Electrode defective
Buffer solution defective
Replace electrode Use new buffer solution
Incorrect calibration temperature
Calibration can only be done at 0…60 °C
