CONTRAST ADJUSTMENT
Press and hold the | button while the control power is off, then turn the control power on, then release | ||
the | button. Press the | buttons to darken or lighten the contrast. Press the | |
| to accept the changes. |
| |
Note: If the display is blank, keep pressing the increase button to bring up the contrast. A new installed display board may not have had the contrast set at the factory and defaults at no contrast.
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