Troubleshooting - Hach HQ440d Manuel D'utilisation De Base

1. Loosen the three battery cover screws and remove the battery cover
Note: Do not remove the screws from the battery cover.
2. Remove the batteries.
3. Install 4 AA alkaline or 4 AA nickel metal hydride (NiMH) batteries. Make sure that the batteries
are installed in the correct polarity.
4. Replace the battery cover.
Note: Do not over-tighten the screws.
Figure 10 Battery replacement

Troubleshooting

Refer to the following table for common problem messages or symptoms, possible causes and
corrective actions.
Error/Warning
Connect a Probe
16 English
Description
Probe disconnected or
connected improperly
Software not updated to
most current version
Problem with probe
(Figure
Solution
Tighten the locking nut on the probe connector.
Disconnect the probe and then connect the probe
again
To download the most current version of the
software, refer to the applicable product page on
the manufacturer's website.
Connect a different IntelliCAL probe to verify if
problem is with probe or meter
10).