Heatcraft Refrigeration Products PRO3 Top Mount H-IM-81E Installation And Operation Manual page 13

PRO Top Mount Packaged Refrigeration System | Indoor
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Rapid Parameter Set Selection (EZY)
The easy controller features the EZY parameter which is used to
quickly choose a list of parameters, with corresponding values, for
the control of the refrigeration system.
Table of Alarms and Signals
When an alarm is activated, the display shows the corresponding
message that flashes alternating with the temperature; if fitted and
enabled, the buzzer and the alarm relay are also activated.
All the alarms have automatic reset (that is, they stop when
the causes are no longer present), except for alarm 'CHt' which
has manual reset (instrument on/off using the UP button or by
disconnecting the power supply).
Alarm
Buzzer and Alarm Relay
Code
E0 active
E1 not active
E2 not active
IA active
dOr active
LO active
HI active
EE not active
EF not active
Ed not active
dF not active
cht not active
CHt active
EtC not active
LED Alarm Description
ON probe 1 error= control
ON probe 2 error= defrost
ON probe 3 error= condenser/ product
ON external alarm
ON open door alarm
ON low temperature alarm
ON high temperature alarm
ON unit parameter error
ON operating parameter error
ON defrost ended by timeout
OFF defrost running
ON dirty condenser pre-alarm
ON dirty condenser alarm
ON clock alarm
NOTE:
• to restore the selected rapid parameter set at any time, turn the
controller off and on again, while holding SET. The display shows
"CE" to indicate that the selected rapid set (EZY= 1, 2, 3) has again
overwritten the operating parameters, thus restoring the original
set of parameters;
• to restore all the parameters and return to the original default
values (factory settings), turn the controller off and on again
while holding DOWN and SET, until the display shows "CF". Use
this procedure with extreme care, as it may compromise the
fundamental control settings;
• EZY=0 brings no change;
Pressing the SET button mutes the buzzer, while the
code displayed and the alarm relay only go off when
the causes of the alarm have been resolved. The alarm
codes are shown in the table below:
Reset
automatic
automatic
automatic
automatic
automatic
automatic
automatic
not possible
manual
on first defrost ended correctly
automatic
automatic
manual
by setting the time
Enable Alarm
parameters involved
–
d0= 0 / 1 / 4, F0= 1
[A4=10]
[A4 = 1] [+A7]
[A4 = 7/8][+A7]
[AL] [Ad]
[AH] [Ad]
–
–
[dP] [dt] [d4] [A8]
[d6=0]
[A4=10]
[A4=10]
if bands active
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