Controller Operation - Performance Plus; Controller Display; Controller Security; Changing Temperature Display From C To F - Follett FZR4P Installation, Operation And Service Manual

Controller Operation - Performance Plus

In normal operation, the controller displays cabinet temperatures in degrees C or user-selected degrees F.
F temperatures are displayed to the nearest degree and C temperatures are displayed to one decimal point.
The controller is pre-programmed with a –28 C (–18 to F) set point. COMP displays when the compressor is
running. If this set point does not meet your specific application needs, instructions for changing the set point are
found below.

Controller Display

The controller display will show the temperature in degrees C or degrees F as selected by the user except when
the unit is in an alarm.
The controller has system indicators above the temperature display to let you know when: the compressor is
energized (COMP), the evaporator fan is energized (FAN) or the unit is in defrost (DEF).
To display temperature Set-point
Step
Press and release SET
1
To change temperature Set-point
Step
Press and hold SET for 3 seconds
1
2 Press UP or DOWN arrows to desired
set-point
Press and release SET to accept
3

Controller Security

The controller can be locked so that the set-points in the controller cannot be changed.
1. To lock, press UP and DOWN arrows simultaneously until LOC appears (approximately 5 s).
2. To unlock the controller, press up and down arrows simultaneously until UNL appears. Changes are only
accepted when the controller is unlocked.

Changing Temperature Display from C to F

1. Press SET and UP arrow simultaneously until L1 is displayed.
2. Press the UP arrow until UNT is displayed. Press SET then use the UP and DOWN arrows to change
the temperature display from F to C. Press SET to accept. The display will return to the temperature in
approximately 10 s.

Sleep Function

Press the SLEEP button to blank the display, or press any button to wake the display. If the unit goes into an
alarm, the display will wake to display the alarm.
12 FZR4P, FZR5P and FZR5PLP-T Undercounter Freezers
Input
Current set-point temperature will display for approximately 5 seconds.
Display will return to current product temperature.
Input
Set-point will flash.
New temperature set-point will flash on the display.
Product temperature will display.
Display
Display