Bohn PRO3 Installation And Operation Manual page 15

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 fitter 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
Code Alarm Relay
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 over written
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
car, 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 able 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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