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PRO
3
TOP MOUNT PACKAGED REFRIGERATION SYSTEM
12
But.
No.
Normal Operation
Start up
Pressing the
button alone
Pressing with
other buttons
1
more than 3
s: switch ON/
OFF
pressed
together with
3 activates/
deactivates
the continuous
cycle
–
2
- 1 s: displays/
sets the set
point
- more than
3 s: accesses
the parameter
setting
menu (enter
password 22)
- mutes the
audible alarm
(buzzer)
–
for 1 s
RESET
current EZY
set
pressed
together
(2 and 3)
activate
parameter
reset
procedure
3
more than
3 s: activates/
deactivates
the defrost
pressed
together with
1 activates/
deactivates
the continuous
cycle
for 1 s
displays
firmware
version
Control Parameters
st set point
rd set point dierential
Defrost Parameters
d0 type of defrost
dl interval between two defrosts
dt end defrost temperature
dP maximum defrost duration
Alarm Parameters
Ad temperature alarm delay
AL low temperature alarm threshold/deviation
AH high temperature alarm threshold/deviation
KEYPADS PRELIMINARY CONFIGURATIONS
Once the electrical connections have been completed,
simply power-up the controller to make it operative.
Heatcraft recommends that you check the parameters
listed.
FUNCTIONS AVAILABLE FROM KEYPAD
ON AND OFF
Switching the instrument ON: press UP for more than 3 s
(when pressing the button, the display shows ON).
Switching the instrument OFF: press UP for more than 3 s.
The display shows the message “OFF”, alternating with the
temperature measured by the set probe.
In o status, the following functions are disabled
(if featured by the model):
■ compressor control / duty setting / continuous cycle;
■ defrost;
■ fan control;
■ alarms : ‘LO’, ‘HI’, ‘IA’, ‘cht’, ‘CHT’;
■ door switch (A4= 7/8 );
■ buzzer (when available)
While the following are enabled:
■ temperature display, alternating with the message
“OFF”;
■ parameter display and setting;
■ alarms: “E0”, “E1”, “E2”;
■ the internal timer relating to parameter ‘dI’ is updated.
If ‘dI’ expires in OFF status, a defrost is performed
when restarting;
■ auxiliary relay management, only in the following
configurations:
¡ H1= = 1/2 (“E0” alarm only)
¡ H1= 3, A4= 6;
1
2
3
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