Troubleshooting, Error messages, Troubleshooting for a list of error messages – YSI 60 User Manual
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7. Troubleshooting
Error Messages
The instrument performs a Power On Self Test each time it is turned on. The following error
messages are provided to facilitate troubleshooting. They appear on the LCD when an error is
detected.
Symptom
Possible
Cause
Action
1.
Instrument will not turn on
•
Low battery voltage
•
Batteries installed wrong
•
Meter requires service
•
•
•
Return system for service (pg 21)
16. Instrument "locks up"
•
Instrument has received a shock
•
Batteries are low or damaged
•
System requires service
•
Remove battery lid, wait 15 seconds
for reset, replace lid. (pg 2)
•
•
Return system for service (pg 21)
16. Instrument will not calibrate due to
unstable readings (decimal point
keeps flashing)
•
pH sensor is fouled
•
pH sensor is bad
•
System requires service
•
•
•
Return system for service (pg 21)
16. pH readings are inaccurate
•
pH buffers out of spec
•
Cal procedure not correct
•
Sample temperature is over 20°C
from cal temperature
•
pH sensor is fouled or damaged
•
pH Sensor is bad
•
System requires service
•
Recalibrate with known good
standards (pg 6)
•
Calibrate within
±20°C of sample
temp (
±10°C for best results)
•
•
•
Return system for service (pg 21)
16. LCD displays "LO BAT"
•
Batteries are low or damaged
•
16. Main Display reads “nOnE”
•
During recall, no data is currently
stored in memory.
•
Store data before attempting to recall
(pg 11)
16. Main Display reads “OVEr”
•
When calibrating, pH level is over
range allowed for the buffer value
selected.
•
When measuring, pH level is > 14
•
Recalibrate with known good
standards (pg 6)
•
•
•
Return system for service (pg 21)
16. Main Display reads “undr”
•
When calibrating, pH level is under
range allowed for the buffer value
selected.
•
When measuring, pH level is < 0
•
Recalibrate with known good
standards (pg 6)
•
•
•
Return system for service (pg 21)
16. Main Display reads “OVEr”
(Secondary display reads “ovr”)
•
Temperature reading is >75°C
•
Measure samples at a temperature
within the range of the system.
16. Main Display reads “undr”
(Secondary display reads “udr”)
•
Temperature reading is <-5°C
•
Measure samples at a temperature
within the range of the system.