Carel ir33+ Programming Instructions

Carel IR33+ Controller - Basic Operations • 5
CAREL IR33+ CONTROLLER
Basic Operations
Carel IR33+ Display Legend
KEYPAD LOCATIONS
1. Temperature Display: The temperature of the case is displayed here. When the case is in defrost mode, this display will read "DEF".
2. Compressor: When lit, this icon indicates the compressor is running. It ashes when activation is delayed or inhibited by protection times.
3. Fan: When lit, this icon indicates the fans are running. It ashes when activation is delayed by protection times or other procedures in
progress.
4. Defrost: When lit, this icon indicates the defrost heater is activated. It ashes when activation is delayed by protection times or other
procedures in progress.
5. AUX output: When lit, this icon indicates AUX output 1 or 2 is active. It ashes when anti-sweat heater function is active.
6. Alarm: When ashing, there is an alarm during normal operation (e.g. high/low temperature alarm) and/or a malfunction.
7. Clock: When lit, this icon indicates Real Time Clock ("RTC") has been set and is available. When ashing, there is a clock alarm and Error
Time Clock ("Etc") will be displayed. This means that the "RTC" has failed.
8. Service: When ashing, a malfunction has occured (e.g. Electrically Erasable Programmable Read-Only Memory (EEPROM) errors or
faulty probles).
BUTTONS:
9. PRG/MUTE: Accesses the type "F" parameters (frequent) or the menu for setting the password to access the type "C" parameters
(conguration) if pressed for more than three seconds. If there is an active alarm, it mutes the audible alarm.
If this button is pressed and held for more than ve seconds at start-up, it will activate the procedure for setting the default factory
parameters. Contact Zero Zone before performing this procedure; it can erase your IR33+ program settings.
Note: PRG+ON-OFF/UP resets any alarm with manual reset if pressed together for more than three seconds.
10. ON-OFF/UP: Switches the controller ON if pressed for more than one second. If pressed for more than three seconds, it switches the
controller OFF. When setting the parameters, it increases the value displayed or scrolls to the next parameter.
11. AUX/DOWN: Activates/deactivates the auxillary output if pressed for more than one second. When setting the parameters, it decreases
the value displayed or scrolls to the previous parameter.
12. SET/DEF: Displays and/or lets the user set the set point if pressed for more than one second. Also used to enter settings of parameters.
CAUTION:Ifpressedformorethanveseconds,itstartsamanualdefrost.

Carel ir33+ Specifications

General

Model	ir33+
Category	Controller
Storage Temperature	-20°C to +70°C
Dimensions	74 x 32 x 60 mm
Communication	RS485
Operating Temperature	-10°C to +60°C
Protection Rating	IP65
Power Consumption	5 VA max
Relative Humidity	10% to 90% non-condensing
Number of Relays	3