Heatcraft Refrigeration Products PRO TOP MOUNT H-IM-82C Installation And Operation Manual page 13

PRO Top Mount Packaged Refrigeration System | Outdoor
3
Keypads
NORMAL OPERATION
pressing pressing
BUT. NO.
the button with other
alone buttons
pressed
together
with 3
more than
activates/
1 3 s: switch
deactivates
ON/OFF
the
continuous
cycle
- 1 s:
displays/
sets the set
point
- more
than 3 s:
accesses
the
parameter
2
setting
menu
(enter
password
22)
- mutes the
audible
alarm
(buzzer)
pressed
together
more
with 1
than 3 s:
activates/
3 activates/
deactivates
deactivates
the
the defrost
continuous
cycle
START UP
–
for 1 s
RESET
–
current EZY
pressed
set
together
(2 and 3)
activate
parameter
reset
procedure
for 1 s
displays
firmware
version
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.
Control Parameters
st set point
rd set point differential
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
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 off 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;
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