Owner manual


XVIII. TROUBLESHOOTING CHART
Symptom Possible Cause Corrective Action
No display, even though
measurement key pressed
Battery weak or not connected. 
pH  

 
buffers or samples in sensor well.
 
 
 
 
No response to pH Sensor bulb is cracked or an
electromechanical short caused by an
internal crack.

Will not adjust down to pH  

pH readings drift or respond slowly to
FAC”

1. Temporary condition due to memory” of

 
 


Unstable Conductivity/TDS/
Resistivity readings
1. Dirty electrodes.
 
atmospheric contamination.
 
 

Unable to calibrate Conductivity/
TDS
Film or deposits on electrodes. 
Resistivity readings much lower than
expected
1. Contamination from previous sample or

 
 
place.
 
Low ORP 
Slow or no response to ORP changes

 




