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Carel IR32M - User Manual

Carel IR32M
63 pages
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CONTENTS
General features . . . . . 1
Models available . . . . . 1
Main features of the Infrared Series . . . . 2
Front panel and buttons . . . . . 4
LED display - Indicators . . . . . 4
Keypad . . . . . 5
Installation . . . . . 6
Standard configuration . . . . . 6
Cautions . . . . . 7
Selection of the main working parameters - Other important parameters . . . 8
List of the working parameters to be checked before starting the unit . . . 9
How to modify the working parameters . . . . 10
Gaining access - How to modify the parameters . . . . 10
How to exit the procedure - How to exit the procedure without memorizing the modified data . . 10
Reset procedure . . . . . 11
Remote control unit . . . . . 12
Technical specifications - Keypad description . . . . 12
Buttons used to activate/deactivate the use of the remote control unit . . . 12
Buttons used to modify the main parameters (directly accessible buttons) . . . 13
Buttons for the remote control of the IR instruments . . . . 13
How to use the remote control unit . . . . 13
Access without code . . . . . 13
Access with code . . . . . 14
Further information . . . . . 15
Configuration parameters - The password . . . . 15
/ = parameters for the management of the temperature sensors . . . 16
r = parameters for the temperature regulation . . . . 18
c = parameters for the compressor management . . . . 19
d = parameters for the defrost management . . . . 21
A = parameters for the alarm control . . . . 24
F = parameters for controlling evaporator fans . . . . 28
Summary diagram of the evaporator fan operation . . . . 29
Notes for the new release . . . . . 31
Wiring diagrams . . . . . 34
Wiring diagram for multiple units - IR32 panel mounting connections . . . 34
Operating states of the equipment . . . . 38
Sequence of main phases . . . . . 38
Alarms and troubleshooting . . . . . 39
What to do if the IR32S, IRDRSE/S0 fails to work . . . . 41
What to do if the IR32Y fails to work . . . . 41
What to do if the IR32P or IR32C, IRDRC fails to work . . . 43
Technical characteristics . . . . . 44
Temperature/resistance ratios for NTC thermistors. . . . 48
IR32 dimensions . . . . . 50
Code numbers for ordering controls and accessories . . . 51
IR96: microprocessor-based freezer controller . . . . 53
New functions . . . . . 53
Technical features -- Connections . . . . 55
Ir96: keys functioning . . . . . 56
Functioning . . . . . 56
IR96: parameters . . . . . 58
Parameters modification . . . . . 58
New-set values memorisation . . . . . 58
List of parameters . . . . . 59
Description of particular parameters and performances . . . 61
Memorisation of minimum/maximum temperature . . . . 61
Functioning of the relay 4 . . . . . 61
Type of sensor - Digital Inputs Configuration . . . . 61
IR96: alarms . . . . . 62
Dimensions . . . . . 62

Table of Contents

Questions and Answers

  • M
    Mrs. Lisa Morgan DVMAug 16, 2025
    What to do if Carel Controller shows E0 FLASHING control sensor error?
    • S
      Stacey MahoneyAug 17, 2025
      If the Carel Controller displays 'E0 FLASHING', indicating a control sensor error, it could be due to a non-working sensor because of signal interruption, a short-circuit, or the sensor not being compatible with the equipment. Also, the parameter /0 might not correspond to the unit's hardware setup. Check parameter /0 to ensure it corresponds to the unit's hardware setup.
  • B
    butlerkathrynAug 19, 2025
    How to fix Carel IR32M Controller E1 FLASHING evaporator sensor error?
    • D
      David WilsonAug 19, 2025
      If the Carel Controller displays 'E1 FLASHING', which indicates an evaporator sensor error, it may be caused by a sensor not working due to signal interruption, a short circuit, or the sensor being incompatible with the equipment. It may also be that parameter /0 does not correspond to the unit's hardware setup. To resolve this, check parameter /0 to ensure it corresponds to the unit's hardware setup.
  • T
    twashingtonAug 22, 2025
    Why is my Carel Controller HI FLASHING high temperature alarm?
    • K
      Keith EspinozaAug 22, 2025
      If the Carel Controller shows 'HI FLASHING', indicating a high-temperature alarm, it means the sensor has registered a temperature higher than the set value, exceeding the parameter AH. To address this, check the parameters AH, Ad, and A0.
  • M
    Michele WhiteAug 25, 2025
    What does it mean when my Carel Controller shows LO FLASHING low temperature alarm?
    • M
      Michael SerranoAug 25, 2025
      When the Carel Controller displays 'LO FLASHING', signaling a low temperature alarm, it means the sensor has registered a temperature lower than the set value, falling below the parameter AL. To resolve this, check the parameters AL, Ad, and A0.
  • C
    Corey DillonAug 27, 2025
    What to do if Carel Controller Ed FLASHING defrost stopped due to expiry of the maximum time?
    • K
      kingpamAug 28, 2025
      If the Carel Controller displays 'Ed FLASHING', indicating that the last defrost stopped because the maximum time expired, check parameters dt, dP, and d4. Also, check the effectiveness of the defrost. If the next defrost ends on temperature, the signal will disappear automatically.
  • A
    Anna GarciaAug 30, 2025
    Why Carel Controller temperature is outside set limits but no alarm is signalled?
    • J
      Julie MartinAug 30, 2025
      If the temperature is outside the set limits, but no alarm is signaled on the Carel Controller, it may be due to the alarm delay operating. To solve this, check Ad.
  • M
    Marcus MccannSep 1, 2025
    How to troubleshoot Carel IR32M Controller when compressor will not start and compressor LED is flashing?
    • M
      michael56Sep 2, 2025
      If the compressor won't start and the compressor LED is flashing on the Carel Controller, it could be due to the compressor delay operating. To address this, review parameters c0, c1, and c2.
  • J
    John ParksSep 4, 2025
    Why is Carel Controller defrost not activated and defrost LED is off?
    • A
      Andrew HillSep 5, 2025
      If the defrost is not activated and the defrost LED is off on the Carel Controller, and if H1=0, it could be because the defrost cycle is too short (dp) or the interval between defrosting dl=0. To solve this, check parameters dP and dl.
  • X
    xcastilloSep 7, 2025
    What to do if manual defrost is not activated and defrost LED is flashing on Carel IR32M Controller?
    • K
      Kevin HuangSep 7, 2025
      If the manual defrost is not activated and the defrost LED is flashing on the Carel Controller, it might be due to compressor protection delays operating. To resolve this, check parameter d9 (select d9=1, see instructions).
  • A
    alyssaclaytonSep 10, 2025
    Why is Carel Controller signalling AL or Ad alarm without being active?
    • C
      Cindy GonzalesSep 10, 2025
      If the Carel Controller signals an AL or Ad alarm (Multi-function input) without it actually being active, it may be because the multi-function input generates an alarm as power goes on. To fix this, check the connection of the input and ensure it is off during normal operation.

Summary

General Features of the Infrared Series

Models Available

Overview of the different models in the Infrared series and their applications.

Power Supply

Details on the wide range and universal power supply options for Infrared instruments.

Keypad and Display

Description of the front panel keys, LED display, and indicators for user interface.

Remote Control Unit

Explanation of the remote control unit for programming and operating the instruments.

Multifunction Inputs and Outputs

Details on the multifunction digital input and output capabilities of the controllers.

Installation and Cautions

Standard Configuration

Information on the factory-set configurations for various Infrared models.

General Cautions

Important safety and installation warnings to prevent damage or hazards.

Parameter Configuration and Modification

Selecting Main Working Parameters

Guide to setting ambient set-point, differential, and other key parameters.

Modifying Parameters

Step-by-step instructions on how to gain access and modify parameters.

Exit Procedures

Methods for exiting parameter modification, with or without saving changes.

Reset Procedure and Further Information

Reset Procedure

Instructions for resetting the instrument to factory default settings.

Configuration Parameters

Overview of parameter types (F and C) and their categorization.

Sensor Parameters Management

Details on sensor parameters like type, calibration, virtual sensor, and units.

Model-Specific Parameters and Functions

Temperature Regulation Parameters

Parameters related to temperature control, differential, and direct/reverse operation.

Compressor Management Parameters

Parameters for controlling compressor start-up, down-time, and duty settings.

Defrost Management Parameters

Parameters for configuring defrost type, interval, duration, and priority.

Alarm Control Parameters

Parameters for setting low/high temperature alarms, delay, and multifunction input.

Fan Control and Other Settings

Evaporator Fan Parameters

Parameters for managing evaporator fans, including control modes and cut-out settings.

Other Settings

Parameters for serial address, special configurations, keypad inhibition, and remote code.

New Release Features

New functionalities like temperature logging, time defrost, and door-switch management.

Wiring Diagrams and Operating States

Wiring Diagrams

Illustrations of wiring connections for multiple units and panel mounting.

Operating States of the Equipment

Explanation of LED states and sequence of main operating phases.

Alarms and Troubleshooting

Alarm Signals and Causes

Description of alarm codes, flashing LEDs, and their corresponding causes.

Troubleshooting Guides

Model-specific guides for identifying and resolving operational problems.

Technical Characteristics and Parameter Summary

Technical Characteristics Table

Comparison of technical specifications across different Infrared models.

Summary of All Parameters

Comprehensive list of all parameters with their types, ranges, and default values.

Temperature;Resistance Ratios for NTC Thermistors

Table showing resistance values for NTC sensors at various temperatures.

Specific Notes and Dimensions

Notes for Controls with Serial Numbers Below 5,000

Information on parameter differences and special reset procedures for older units.

Dimensions

Physical dimensions and drilling templates for IR32 and related components.

Code Numbers for Ordering

Part numbers for sensors, controllers, accessories, and options.

IR96 Controller Functions and Operation

IR96 Controller Features Overview

Introduction to IR96 controller, new functions, and data logging.

IR96 Button Functioning

Detailed description of the function of each button on the IR96 controller.

IR96 Parameter Access and Modification

Guide to accessing parameters by level, modification procedures, and value memorization.

IR96 Alarms and Troubleshooting

Information on IR96 alarm signals, error codes, and troubleshooting steps.

Carel IR32M Specifications

General IconGeneral
BrandCarel
ModelIR32M
CategoryController
LanguageEnglish

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