EASY COOL (PZD0SNP0E1): electronic controllers for normal temperature static refrigeration units
+050004121 - rel. 1.0 - 19.10.2009
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Display and functions
During normal operation, the controller displays the value of the temperature read by
probe. In addition, the display has LED that indicate the activation of the control functions
(see Tab. 1), while the 3 buttons can be used to activate/deactivate some of the functions
(see Tab. 2).
Compressor LED signals
icon function normal operation start up
ON OFF blink
compressor
status
on off ON request in
progress
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 set
point
- more than 3 s: access
parameter setting menu
(enter password ‘22’)
- for 1 s RESET
current
EY set
Tab. 2
Setting the setpoint (desired temperature)
Step Action Effect Meaning
1
Keep SET button pres-
sed 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 Set desired value
3 Press SET button Controller will visualize temperature
read by probes again
setpoint is modifi ed and
saved
Accessing and setting the parameters
Step Action Effect Meaning
1 Keep SET button
pressed for 3 s
After 3 s 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 Insert password “22”
4 Press SET button After 5 s 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 selec-
ted parameter
It’s the currently parame-
ter 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 para-
meters updating will be
active
Description
PJEZ* represents a range of electronic microprocessor controllers with LED display develo-
ped for the management of refrigerating units, display cabinets and showcases; are designed
for the management of static refrigerating units (no fan on the evaporator) operating at
temperatures above 0°C.
Technical specifi cations
• Electronic controllers for normal temperature static refrigeration units
• Power supply 230Vac
• Ambient probe NTC
• Compressor relay 16A
Dimensions (mm)
71x29
36
81
74
33
38,29
31
28.5
10
3
Fig.1
Panel mounting
Front (with 2 screws ø 2,5x12 mm)
max 2,5
1
2
3
Pozidriv type
Do not tighten
excessively
Fig.2
Rear (with 2 quick-fi t side brackets)
1
2
PUSH
Fig.3
If necessary, remove the covers to simplify wiring
Fig.4
Electrical connections
Fig.5
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