2—12
Error Codes, continued
8. Underrange—flashing number below stated test range
• Verify instrument cap is correctly seated.
• Check zero by measuring a blank. If error recurs, re-zero the instrument.
• If the problem persists, contact a Service Center (page 2—37).
Note: See Maximum/Minimum Displayed Value on page 2—26 for more information.
9. Overrange—flashing number above stated test range
Note: Flashing value will be 10% over the upper test limit.
• Check for light blockage.
• Dilute and retest sample.
Note: See Maximum/Minimum Displayed Value on page 2—26 for more information.
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