Special Programming

This mode includes the lock/unlock feature, control initialization, and testing of the outputs and displays.

The shelf buttons are numbered to indicate the correct shelf button to press in the following procedures.

Press and hold the 1 button to exit Special Program Mode at any time.

  1. Turn the POWER switch off.

  2. Press and hold both the UP and DOWN buttons and turn the POWER switch back on.

  3. Press and hold the UP and DOWN buttons until “SP” shows on the display, then release the UP and DOWN buttons. Display will now show “°F” or “°C”.

  4. Press the UP or DOWN buttons to toggle from “°C” (Celsius), or “°F” (Fahrenheit).

  5. Press the 1 button.

  6. “P=L” or P=U” displays. Press or to either lock (“P=L”) or unlock (“P=U”) the controls.Locking the controls will not allow anyone to change the heat values until the controls are unlocked.

  7. Press the 1 button.

  8. CAL shows in the display. Press the 2 button to show the air temperature + the offset value, and press the 3 button to show the offset value.

  9. Press and hold the 3 button and use either the UP or DOWN button to change the offset ± 50 degrees.

  10. Press the 1 button.

  11. CPU displays. Press the 2 button to view the current temperature of the PC board and press the 3 button to view the highest temperature of the PC board.

  12. “OP” displays. Press and release the shelf buttons to turn off and on the heat outputs for each shelf. Press and release the down arrow button to turn off and on the base heat outputs. Press the up arrow button to turn off and on all displays and outputs.

  13. Press the 1 button.

  14. “In” displays. Press and hold the UP or DOWN buttons to re-initialize the controls, which sets all heat settings to “OFF”, or to factory set parameters. “In3”, “In2”, “In1” shows in the display, followed by “In-”, “SyS”, indicating the initialization is complete.

  15. Press the 1 button.

  16. “CE=y” or “CE=n” displays. Use the UP or DOWN buttons to toggle between CE=y and CE=n. If controls are set to CE=y, then the display shows the current air temperature during operation.If controls are set to CE=n, then the display shows “ON” during operation.