9
1310836-07 | Mar 02 2016
MODEL: CAREL PJEZ
AN ACCESS CODE IS NEEDED TO MODIFY PARAMETERS.
PLEASE CONTACT
MTL TECH SUPPORT
TO RECEIVE YOUR
ACCESS CODE
1.888.685.8324
DISPLAYS AND FUNCTIONS
During normal operation, the controller displays the
temperature read by probe 1. In addition, the display has
LEDs that indicate the activation of control functions (see
Table 1), while the 3 buttons can be used to activate /
deactivate some of the functions (see Table 2).
LEDS AND ASSOCIATED FUNCTIONS
TABLE OF FUNCTION ACTIVATED BY THE BUTTONS
TURNING THE DEVICE ON/OFF
Press UP for more than 3 seconds. The control and
defrost algorithms are now disabled and the instrument
displays the message "OFF" alternating by tempreature
read by the set probe. Manual
SETTIN THE SET POINT (DESIRED TEMPERATURE)
ACCESSING AND SETTING THE PARAMETERS
Controller Settings
Lighting
ON/OFF Switch
Cooler
ON/OFF Switch
FACTORY SETTINGS CAREL
Parameter
Function
Set Range
Factory Settings
PS
Password
0 - 200
22
-
Set point
24º - 32º F
26 ºF
/5
Select °C / °F
0 - 1
1 ºF
r1
Minimum set point allowed to the user
-50.0 - r2
24 ºF
r2
Maximum set point allowed to the user
r1 - 200
32 ºF
rd
Control differential (hysteresis)
0.0 - 19.0
3 ºF
c2
Min. compressor off time
0 - 100
4 min
d1
Interval between two defrosts
0 - 199
3 hr
dt
End defrost temperature
50.0 - 130.0
47 ºF
dP
Max. or effective defrost duration
1 - 199
40 min
DESCRIPTION
PJEZ* represent a range of electronic microprocessor controllers with LED display developed for the manage-
ment of refrigerating units, display cabinets and showcases.
TECHNICAL SPECIFICATIONS
• Electronic controllers for low temperature ventilated refrigeration units
• Power supply 115 or 230Vac
• Ambient probe NTC
• Compressor relay 16A
• Defrost relay 8A
• Evaporator fan relay 8A
DISPLAY AND FUNCTIONS
During normal operation, the controller displays the temperature read by probe 1. In addition, the display has
LEDs that indicate the activation of the control functions (see Table 1), while the 3 buttons can be used to
activate/deactivate some of the functions (see Table 2).
LEDS AND ASSOCIATED FUNCTIONS
icon
function
normal operation
ON
OFF
blink
compressor
on
off
request
ON
fan
on
off
request
ON
defrost
on
off
request
ON
alarm
all
no alarm
-
ON
Tab. 1
TABLE OF FUNCTIONS ACTIVATED BY THE BUTTONS
button
normal operation
start up
pressing the button alone
pressed together
up
ON/OFF
more than 3 s:
toggle ON/OFF
Pressed together start/stop
continuous cycle
-
down
defrost
more than 3 s:
start/stop defrost
for 1 s display
fi rmware vers. code
set mute
- 1 s.: display/set the setpoint
- more than 3 s: access parameter
setting menu (enter password ‘22’)
- mute audible alarm (buzzer)
-
for 1 s RESET
current
EZY set
Tab. 2
SETTING THE SETPOINT (DESIRED TEMPERATURE)
g
n
i
n
a
e
M
t
c
e
ff
E
n
o
it
c
A
p
e
t
S
1
Keep SET button pressed for 2 s
After 1 sec currently setpoint value will
fl ash on display
It’s regulation setpoint
currently active
2
Press UP or DOWN buttons
Setpoint value will chang
3
Press SET button
Controller will visualize temperature
read by probes again
Setpoint is modifi ed and
saved
Tab. 3
ACCESSING AND SETTING THE PARAMETERS
g
n
i
n
a
e
M
t
c
e
ff
E
n
o
it
c
A
p
e
t
S
1
Keep SET button pressed
for 3 s
After 3 sec display will visualize “ PS”
Password is requested
2
Press SET button again
Display will visualize “ 0” blinking
3
Press UP or DOWN button Visualized value on display will change
22”
4
Press SET button
After 5 sec the fi rst parameter, “ /5”, will be
visualized on display
It’s the name of the fi rst
parameter
5
Press UP or DOWN button Parameter list will be scrolled on display
(refer to Table of parameters)
Select desired parameter
6
Press SET button
Display will visualize value of the selected
parameter
It’s the currently parameter
value
7
Press UP or DOWN button Parameter value visualized on display will
change
Set desired value
8
Press SET button
Display will visualize parameter name
again
Attention : parameters
updating is not yet active
9
Repeat steps 5, 6, 7 and 8
for all desired parameters
10 Keep SET button
pressed for 5 s
Controller will visualize temperature read
by probes again
Attention: now parame-
ters updating will be active
Tab. 4
Insert password “
Set desired value
start up
PJEZ* easy
electronic controller
SWITCHING THE DEVICE ON/OFF
Press UP for more than 3 s. The control and defrost algorithms are now disabled and the instrument displays the
message “OFF” alternating with the temperature read by the set probe.
MANUAL DEFROST
Press DOWN for more than 3 s (the defrost starts only if the temperature conditions are valid).
CONTINUOUS CYCLE
Press UP and DOWN together for more than 3 s.
DESCRIPTION
PJEZ* represent a range of electronic microprocessor controllers with LED display developed for the manage-
ment of refrigerating units, display cabinets and showcases.
TECHNICAL SPECIFICATIONS
• Electronic controllers for low temperature ventilated refrigeration units
• Power supply 115 or 230Vac
• Ambient probe NTC
• Compressor relay 16A
• Defrost relay 8A
• Evaporator fan relay 8A
DISPLAY AND FUNCTIONS
During normal operation, the controller displays the temperature read by probe 1. In addition, the display has
LEDs that indicate the activation of the control functions (see Table 1), while the 3 buttons can be used to
activate/deactivate some of the functions (see Table 2).
LEDS AND ASSOCIATED FUNCTIONS
icon
function
normal operation
ON
OFF
blink
compressor
on
off
request
ON
fan
on
off
request
ON
defrost
on
off
request
ON
alarm
all
no alarm
-
ON
Tab. 1
TABLE OF FUNCTIONS ACTIVATED BY THE BUTTONS
button
normal operation
start up
pressing the button alone
pressed together
up
ON/OFF
more than 3 s:
toggle ON/OFF
Pressed together start/stop
continuous cycle
-
down
defrost
more than 3 s:
start/stop defrost
for 1 s display
fi rmware vers. code
set mute
- 1 s.: display/set the setpoint
- more than 3 s: access parameter
setting menu (enter password ‘22’)
- mute audible alarm (buzzer)
-
for 1 s RESET
current
EZY set
Tab. 2
SETTING THE SETPOINT (DESIRED TEMPERATURE)
g
n
i
n
a
e
M
t
c
e
ff
E
n
o
it
c
A
p
e
t
S
1
Keep SET button pressed for 2 s
After 1 sec currently setpoint value will
fl ash on display
It’s regulation setpoint
currently active
2
Press UP or DOWN buttons
Setpoint value will chang
3
Press SET button
Controller will visualize temperature
read by probes again
Setpoint is modifi ed and
saved
Tab. 3
ACCESSING AND SETTING THE PARAMETERS
g
n
i
n
a
e
M
t
c
e
ff
E
n
o
it
c
A
p
e
t
S
1
Keep SET button pressed
for 3 s
After 3 sec display will visualize “ PS”
Password is requested
2
Press SET button again
Display will visualize “ 0” blinking
3
Press UP or DOWN button Visualized value on display will change
22”
4
Press SET button
After 5 sec the fi rst parameter, “ /5”, will be
visualized on display
It’s the name of the fi rst
parameter
5
Press UP or DOWN button Parameter list will be scrolled on display
(refer to Table of parameters)
Select desired parameter
6
Press SET button
Display will visualize value of the selected
parameter
It’s the currently parameter
value
7
Press UP or DOWN button Parameter value visualized on display will
change
Set desired value
8
Press SET button
Display will visualize parameter name
again
Attention : parameters
updating is not yet active
9
Repeat steps 5, 6, 7 and 8
for all desired parameters
10 Keep SET button
pressed for 5 s
Controller will visualize temperature read
by probes again
Attention: now parame-
ters updating will be active
Tab. 4
Insert password “
Set desired value
start up
PJEZ* easy
electronic controller
SWITCHING THE DEVICE ON/OFF
Press UP for more than 3 s. The control and defrost algorithms are now disabled and the instrument displays the
message “OFF” alternating with the temperature read by the set probe.
MANUAL DEFROST
Press DOWN for more than 3 s (the defrost starts only if the temperature conditions are valid).
CONTINUOUS CYCLE
Press UP and DOWN together for more than 3 s.
DESCRIPTION
PJEZ* represent a range of electronic microprocessor controllers with LED display developed for the manage-
ment of refrigerating units, display cabinets and showcases.
TECHNICAL SPECIFICATIONS
• Electronic controllers for low temperature ventilated refrigeration units
• Power supply 115 or 230Vac
• Ambient probe NTC
• Compressor relay 16A
• Defrost relay 8A
• Evaporator fan relay 8A
DISPLAY AND FUNCTIONS
During normal operation, the controller displays the temperature read by probe 1. In addition, the display has
LEDs that indicate the activation of the control functions (see Table 1), while the 3 buttons can be used to
activate/deactivate some of the functions (see Table 2).
LEDS AND ASSOCIATED FUNCTIONS
icon
function
normal operation
ON
OFF
blink
compressor
on
off
request
ON
fan
on
off
request
ON
defrost
on
off
request
ON
alarm
all
no alarm
-
ON
Tab. 1
TABLE OF FUNCTIONS ACTIVATED BY THE BUTTONS
button
normal operation
start up
pressing the button alone
pressed together
up
ON/OFF
more than 3 s:
toggle ON/OFF
Pressed together start/stop
continuous cycle
-
down
defrost
more than 3 s:
start/stop defrost
for 1 s display
fi rmware vers. code
set mute
- 1 s.: display/set the setpoint
- more than 3 s: access parameter
setting menu (enter password ‘22’)
- mute audible alarm (buzzer)
-
for 1 s RESET
current
EZY set
Tab. 2
SETTING THE SETPOINT (DESIRED TEMPERATURE)
g
n
i
n
a
e
M
t
c
e
ff
E
n
o
it
c
A
p
e
t
S
1
Keep SET button pressed for 2 s
After 1 sec currently setpoint value will
fl ash on display
It’s regulation setpoint
currently active
2
Press UP or DOWN buttons
Setpoint value will chang
3
Press SET button
Controller will visualize temperature
read by probes again
Setpoint is modifi ed and
saved
Tab. 3
ACCESSING AND SETTING THE PARAMETERS
g
n
i
n
a
e
M
t
c
e
ff
E
n
o
it
c
A
p
e
t
S
1
Keep SET button pressed
for 3 s
After 3 sec display will visualize “ PS”
Password is requested
2
Press SET button again
Display will visualize “ 0” blinking
3
Press UP or DOWN button Visualized value on display will change
22”
4
Press SET button
After 5 sec the fi rst parameter, “ /5”, will be
visualized on display
It’s the name of the fi rst
parameter
5
Press UP or DOWN button Parameter list will be scrolled on display
(refer to Table of parameters)
Select desired parameter
6
Press SET button
Display will visualize value of the selected
parameter
It’s the currently parameter
value
7
Press UP or DOWN button Parameter value visualized on display will
change
Set desired value
8
Press SET button
Display will visualize parameter name
again
Attention : parameters
updating is not yet active
9
Repeat steps 5, 6, 7 and 8
for all desired parameters
10 Keep SET button
pressed for 5 s
Controller will visualize temperature read
by probes again
Attention: now parame-
ters updating will be active
Tab. 4
Insert password “
Set desired value
start up
PJEZ* easy
electronic controller
SWITCHING THE DEVICE ON/OFF
Press UP for more than 3 s. The control and defrost algorithms are now disabled and the instrument displays the
message “OFF” alternating with the temperature read by the set probe.
MANUAL DEFROST
Press DOWN for more than 3 s (the defrost starts only if the temperature conditions are valid).
CONTINUOUS CYCLE
Press UP and DOWN together for more than 3 s.
DESCRIPTION
PJEZ* represent a range of electronic microprocessor controllers with LED display developed for the manage-
ment of refrigerating units, display cabinets and showcases.
TECHNICAL SPECIFICATIONS
• Electronic controllers for low temperature ventilated refrigeration units
• Power supply 115 or 230Vac
• Ambient probe NTC
• Compressor relay 16A
• Defrost relay 8A
• Evaporator fan relay 8A
DISPLAY AND FUNCTIONS
During normal operation, the controller displays the temperature read by probe 1. In addition, the display has
LEDs that indicate the activation of the control functions (see Table 1), while the 3 buttons can be used to
activate/deactivate some of the functions (see Table 2).
LEDS AND ASSOCIATED FUNCTIONS
icon
function
normal operation
ON
OFF
blink
compressor
on
off
request
ON
fan
on
off
request
ON
defrost
on
off
request
ON
alarm
all
no alarm
-
ON
Tab. 1
TABLE OF FUNCTIONS ACTIVATED BY THE BUTTONS
button
normal operation
start up
pressing the button alone
pressed together
up
ON/OFF
more than 3 s:
toggle ON/OFF
Pressed together start/stop
continuous cycle
-
down
defrost
more than 3 s:
start/stop defrost
for 1 s display
fi rmware vers. code
set mute
- 1 s.: display/set the setpoint
- more than 3 s: access parameter
setting menu (enter password ‘22’)
- mute audible alarm (buzzer)
-
for 1 s RESET
current
EZY set
Tab. 2
SETTING THE SETPOINT (DESIRED TEMPERATURE)
g
n
i
n
a
e
M
t
c
e
ff
E
n
o
it
c
A
p
e
t
S
1
Keep SET button pressed for 2 s
After 1 sec currently setpoint value will
fl ash on display
It’s regulation setpoint
currently active
2
Press UP or DOWN buttons
Setpoint value will chang
3
Press SET button
Controller will visualize temperature
read by probes again
Setpoint is modifi ed and
saved
Tab. 3
ACCESSING AND SETTING THE PARAMETERS
g
n
i
n
a
e
M
t
c
e
ff
E
n
o
it
c
A
p
e
t
S
1
Keep SET button pressed
for 3 s
After 3 sec display will visualize “ PS”
Password is requested
2
Press SET button again
Display will visualize “ 0” blinking
3
Press UP or DOWN button Visualized value on display will change
22”
4
Press SET button
After 5 sec the fi rst parameter, “ /5”, will be
visualized on display
It’s the name of the fi rst
parameter
5
Press UP or DOWN button Parameter list will be scrolled on display
(refer to Table of parameters)
Select desired parameter
6
Press SET button
Display will visualize value of the selected
parameter
It’s the currently parameter
value
7
Press UP or DOWN button Parameter value visualized on display will
change
Set desired value
8
Press SET button
Display will visualize parameter name
again
Attention : parameters
updating is not yet active
9
Repeat steps 5, 6, 7 and 8
for all desired parameters
10 Keep SET button
pressed for 5 s
Controller will visualize temperature read
by probes again
Attention: now parame-
ters updating will be active
Tab. 4
Insert password “
Set desired value
start up
PJEZ* easy
electronic controller
SWITCHING THE DEVICE ON/OFF
Press UP for more than 3 s. The control and defrost algorithms are now disabled and the instrument displays the
message “OFF” alternating with the temperature read by the set probe.
MANUAL DEFROST
Press DOWN for more than 3 s (the defrost starts only if the temperature conditions are valid).
CONTINUOUS CYCLE
Press UP and DOWN together for more than 3 s.
SET
