Carel Easy PJEZS Series User Manual

CAREL SERIES REFRIGERATION CONTROL – FIELD SUPPORT GUIDE
1. Overview of the Easy control’s display and buttons:
2. Wiring the control’s connections correctly: Carel controls come in a wide variety of different configurations, often
customized for the OEM appliance manufacturer. A label found on top of the control will show a wiring guide and electrical
specifications for the specific model. When replacing the control, DO NOT ASSUME that the numbered terminals will always serve
the same function as the previous control installed. Carefully check all connections according to the labels / symbols shown
underneath each numbered contact.
Common Configurations: PJEZS* Models – Medium Temp PJEZC* Models – Low Temp
Carefully note the following connections available on your model, and connect the wires accordingly.
Temperature probe input(s)
Control probe (AMB) and optional defrost probe (DEF), with a common
Digital input
Configurable input for alarm, defrost, curtain etc. (Parameter A4)
Compressor output
Contact points may vary across different control models
Fan output
Contact points may vary across different control models
Defrost output
Contact points may vary across different control models
Auxiliary output
Contact points may vary across different control models
Line voltage to outputs
L
Typically isolated from supply voltage, requiring its own connection
Supply voltage
L/N
Line and neutral supply wires, most commonly points 6 and 7
3. Viewing and changing the set point: Press and hold the red SET button for 1 second to view current set point,
and release immediately after it is displayed. (Display may flash, indicating the value can be changed.)
Press UP and DOWN arrows to change value and press SET again to store new value.

Carel Easy PJEZS Series Specifications

General

Brand	Carel
Model	Easy PJEZS Series
Category	Controller
Language	English

Summary

Overview of Easy Control Display and Buttons

Correct Wiring of Control Connections

Viewing and Changing the Set Point

Programming and Customizing Control Functions

Accessing Control Parameters

Steps to access the control's protected parameters, including password entry and navigation.

Troubleshooting Common Alarms

Probe 1 Error

Indicates an issue with the primary control probe, requiring replacement.

Probe 2 Error

Indicates an issue with the defrost probe, requiring replacement.

Hi Temp Alarm

Alarm triggered by high temperature, often indicating refrigeration failure.

Low Temp Alarm

Alarm triggered by low temperature, indicating cooling below set point.

Defrost Timeout

Indicates a prolonged defrost cycle; check defrost probe.

Dirty Condenser

Alarm related to condenser condition, linked to probe 3 input.

Interpreting Control Status and Icons

Display Alternates 'OFF' / Temp

Controller is in OFF status; press and hold power button to toggle.

Icons Are Blinking

Controller is calling for activation but is delayed by a set time.

Cooling Below Set Point

Check compressor icon blinking for continuous cycle mode; troubleshoot appliance if needed.

Not Starting / Skipping Defrost

Check operating mode parameter and defrost settings (probe, time, duration).