ERR:WINDOW RANGE
Texas Instruments TI-84 Calculator
Severity: MinorWhat Does This Error Mean?
ERR:WINDOW RANGE means the graphing window settings are invalid. Xmin must be less than Xmax, Ymin must be less than Ymax, and scale values must be positive. Press WINDOW and check your settings, or press ZOOM > 6:ZStandard to reset.
Affected Models
- TI-84 Plus
- TI-84 Plus CE
- TI-83 Plus
Common Causes
- Xmin is greater than or equal to Xmax
- Ymin is greater than or equal to Ymax
- Xscl or Yscl set to zero or negative
- Window values accidentally set to extreme numbers
- Tmin >= Tmax in parametric mode
How to Fix It
-
Press ZOOM > 6:ZStandard to reset to default window.
This sets Xmin=-10, Xmax=10, Ymin=-10, Ymax=10. It is the quickest fix for window range errors.
-
Or press WINDOW and check each value.
Make sure Xmin < Xmax and Ymin < Ymax. Xscl and Yscl should be positive numbers.
-
For parametric or polar mode: check Tmin, Tmax, Tstep.
Tmin must be less than Tmax. Tstep must be positive.
Frequently Asked Questions
What is ZStandard?
ZStandard (ZOOM 6) resets the viewing window to -10 to 10 on both axes. It is the quickest way to get a working graph window.
Can I set the window to show only positive values?
Yes. Set Xmin=0 and Ymin=0 to show only the first quadrant. This is useful for real-world problems where negatives do not make sense.