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Carel IR32S - User Manual

Carel IR32S
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

  • J
    johnsonchristopherAug 17, 2025
    What to do if Carel Controller shows E0 FLASHING control sensor error?
    • F
      Frank SaundersAug 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.
  • P
    Paul SummersAug 22, 2025
    Why is my Carel IR32S Controller HI FLASHING high temperature alarm?
    • E
      Elizabeth FoxAug 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.
  • A
    Ashley VillegasAug 25, 2025
    What does it mean when my Carel IR32S shows LO FLASHING low temperature alarm?
    • B
      Brittney CookAug 26, 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.
  • J
    jvaughanAug 28, 2025
    What to do if Carel IR32S Ed FLASHING defrost stopped due to expiry of the maximum time?
    • K
      Kelly WarnerAug 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.
  • K
    Kayla RomeroAug 30, 2025
    Why Carel Controller temperature is outside set limits but no alarm is signalled?
    • A
      April ContrerasAug 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.
  • S
    Susan TaylorSep 2, 2025
    How to troubleshoot Carel Controller when compressor will not start and compressor LED is flashing?
    • F
      fsmithSep 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.
  • A
    amber06Sep 5, 2025
    Why is Carel IR32S Controller defrost not activated and defrost LED is off?
    • M
      mcdonalddebraSep 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.
  • B
    Brandon CalderonSep 7, 2025
    What to do if manual defrost is not activated and defrost LED is flashing on Carel Controller?
    • C
      Christopher ChristianSep 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).
  • Y
    ybellSep 10, 2025
    How to fix Carel IR32S Controller E1 FLASHING evaporator sensor error?
    • J
      James RaySep 12, 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.
  • E
    Eddie PerrySep 12, 2025
    Why is Carel IR32S signalling AL or Ad alarm without being active?
    • A
      Angel HendersonSep 12, 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

Infrared Series General Features

Model Overview and Descriptions

Details the various IR32 models and their specific functionalities.

Installation and Configuration

Standard Configuration and Setup

Parameter Settings and Modification

Guides on selecting, modifying, and understanding working parameters.

Operating States and Troubleshooting

Equipment Operating States and Alarms

Troubleshooting Common Issues

Guides on diagnosing and resolving common alarms and operational issues.

IR96 Controller Overview

New Functions and Features

IR96 Parameter and Button Functionality

IR96 Parameter List and Modification

Comprehensive list and description of all configurable parameters for the IR96.

IR96 Alarms and Troubleshooting

IR96 Alarm Signals

Covers alarm signals, error codes, and their meanings for the IR96.

IR96 Troubleshooting

Carel IR32S Specifications

General IconGeneral
ModelIR32S
TypeController
Number of Inputs32
Communication ProtocolsModbus RTU
Mounting TypeDIN rail
ProtectionIP20
BuzzerYes
DisplayLCD
Serial ports1
Operating temperature-10 to +50 °C
Storage temperature-20°C to +70°C
Relative humidity0 to 95% (non-condensing)

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