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Carel SKOPE ir33 controller parameter changes for tropical climates

Product Group: Refrigeration
Content: CAREL SKOPE ir33 Controller Tropical Specifications - Adjustment of Electronic Controller
Issue Date: 7/0/2011
Customer: General
Bulletin No: SBG0060
Revision: 1.0 (Current version of this bulletin)

Background

SKOPE Generation 2 chillers using the CAREL SKOPE ir33 electronic controller (shown below) may experience some issues with over-temperature alarms when in extreme tropical climate conditions. To reduce these alarms and maintain correct operation, some controller parameter changes are required (see the table below). Follow the procedure below to access and modify the
parameters.

Carel ir33 1

Parameter Changes for Tropical Climates

Carel ir33 2

Procedure

To access and modify the parameters for tropical climates:

  1. Press the PRG mute and Set keys together for more than 5 seconds. The display will show either ‘00’ or ‘-1’, representing the password prompt.
  2. Press the aux or def keys until displaying the password number ‘66’.
  3. Confirm by pressing the Set key. The display will show the code of the first modifiable parameter.
  4. Press the aux or def keys until reaching the parameter to be modified. When scrolling, an icon appears on the display representing the category the parameter belongs to.
  5. Press the Set key to display the value associated with the parameter.
  6. Increase or decrease the value using the aux or def keys respectively.
  7. Press the Set key to temporarily save the new value and return to the display of the parameter code.
  8. Repeat steps 4 to 7 for all necessary parameters.
  9. Press the PRG mute key for more than five seconds to store the new values of the modified parameters.