pH and mV Troubleshooting, continued...
Inaccurate readings,
even when
calibration is
successful.
Reference junction blocked. Clean reference junction, as per
instructions supplied with the
electrode.
Displays 7.00 for all
solutions.
Electrical short in connector. 1. Check connector. Replace if
necessary.
2. Replace electrode.
Displays 4-5 pH for
all solutions.
Glass bulb or internal stem
cracked.
Replace electrode.
16.3 Temperature Troubleshooting
Symptom Possible Causes Remedy
Displays “Man”
when temperature
probe is plugged in.
1. Faulty temperature probe. Fit new temperature probe, part
number 121247.
Temperature
inaccurate and
cannot be
calibrated.
1. Faulty connector.
2. Faulty temperature probe.
Check the connector and
replace if necessary.
Fit new temperature probe, part
number 121247.
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