Follett REF Series User Manual download pdf (Page 9)

Controller security

The controller panel can be locked to prevent inadvertent or intentional programming changes. In locked mode,

the controller will display cabinet temperature and cut-out set point only.

To lock the controller

1. Press the UP/DOWN ARROW in the middle until “POF” displays.

2. Programmer is now locked.

To unlock the controller

1. Press UP/DOWN ARROW in middle until “PON” displays.

2. Programmer is now unlocked.

Controller programmer key (optional accessory)

Controller programming keys are available from Follett to provide fast and easy conversion of factory programmed

controllers from °F to °C (service part number 00131722) or back to °F (service part number 00130112). In

addition both programming keys will accept user programmed cut-out settings to allow fast and easy transfer of

these user selected settings to multiple refrigerators.

Programming refrigerator from a key (download)

1. Turn OFF refrigerator.

2. Remove 6 screws from panel holding controller to access back of

controller.

3. Insert appropriate programmed key into 5 PIN receptacle on

controller back.

4. TURN ON refrigerator.

5. Values from key automatically download to refrigerator (“dol”

message blinks followed by “end”).

6. After 10 seconds display returns to current refrigerator

temperature and controller will restart with new values.

7. Remove key.

Note: An “Err” message displays for failed programming. Turn refrigerator OFF then ON to restart download, or

remove key to abort.

Programming key from a refrigerator (upload)

1. If required re-program your refrigerator to °C (using 00131722) or °F (using 00130112).

2. Set the controller to the desired cut-out temperature using the controller key pad.

3. Remove 6 screws from panel holding controller to access back of controller.

4. With controller ON, insert key into 5 PIN receptacle on controller back.

5. Push UP ARROW on controller front (“uPL” displays followed by “end”).

6. Press SET (“end” stops flashing).

7. TURN OFF refrigerator and remove key.

8. Turn refrigerator back on.

9. Programming key is now programmed.

Note: An “Err” message displays for failed programming. Push UP ARROW again to restart upload or remove key

and abort.

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••••

6 75

Controller

programming key

(accessory)

Supply

Line

Comp

Probe

Fig. 9

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Follett REF Series User Manual Page 9

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