User Guide

Instruction Manual CON 510

9 TROUBLE SHOOTING GUIDE

Problem Possible Cause Solution

No display A. AC outlet not switched on. A. Switch on power supply.

B. AC adapter socket not inserted

properly

B. Re-insert AC adapter socket.

Unstable readings A. Air bubbles in probe A. Tap probe to dislodge air bubbles.

B. Dirty probe B. Clean probe and recalibrate.

C. External noise pickup C. Move away from noise.

D. Broken probe D. Replace probe.

“Or” on upper display A. Probe is shorted. A. Test probe.

B. Probe is in too-high solution for

measurement range.

B. Use different solution or select different

range.

Not able to calibrate A. Dirty/Oily probe A. Clean

B. Incorrect probe cell constant B. Replace and use correct probe.

10 ERROR MESSAGES

LCD Display Indicates Possible Cause Solution

Err. annunciator Unrecognised key entry

Incorrect key entry or

selection

Release key. Check mode.

Select appropriate key.

CAL & Err

annunicator blink

Calibration error

Incorrect value input

during calibration. Dirty

or faulty probe.

Check value. Clean or replace

probe.