Evco S.p.A. • Code 104X201E314 • page 1/8
EVX Series Digital Controllers for Static and Ventilated Refrigeration Display Cabinets version 3.02
EN ENGLISH
1 IMPORTANT
1.1 Important
Carefully read these instructions before installing and using the product. Pay close attention to the notes on installation and electrical wiring
connections; save these instructions together with the instrument for future reference.
The instrument must be disposed of in accordance with local laws on the collection of electrical and electronic equipment.
2 INTRODUCTION
2.1 Introduction
EVX is a new range of digital controllers for the operation of static and
ventilated refrigerating cabinets.
The series is composed of the following models:
•
EVX201 - for the operation of static refrigerated cabinets, with simple
HACCP function
•
EVX203, EVX204 and EVX205 - for the operation of ventilated refrig-
erated cabinets, with simple HACCP function
•
EVX214 and EVX215 - for the operation of ventilated refrigerated
cabinets, with timer, advanced HACCP function and an Energy Sav-
ing function.
EVX201 is equipped with:
• 1 measurement input (cell probe) for NTC probes
• 1 digital input (door microswitch)
•1digital output (relay) for compressor operation
(16 A @ 250 VAC); defrosting occurs when the compressor is stopped.
EVX203 is equipped with:
• 2 measurement inputs (cell probe and evaportor probe) for NTC
probes
• 1 digital input (door microswitch)
•3 digital outputs (relay) for compressor operation
(16 A @ 250 VAC), defrosting and the evaporator fan; defrosting may
be either electrical or by hot gas.
EVX204 and EVX205 are equipped with:
• 3 measure inputs (cell probe, evaporator probe and condenser
probe) for NTC probes
• 2 digital inputs (door microswitch and multifunction)
• 4 digital outputs (relay, 5 for EVX205) for operation of the compres-
sor (30 A @ 250 VAC), defroster, the evaporator fan, a fourth and a
fifth use (programmable as cell light, demister resistor, auxiliary out-
put, output alarm, door resistor, evaporator valve or condenser fan);
defrosting may be electric or by hot gas.
3 DIMENSIONS AND INSTALLATION
3.1 Dimensions
The dimensions are expressed in mm (in).
3.2 Installation
Back panel installation using M3 studs.
4 USER INTERFACE
4.1 Preliminary signals
The user interface consists of a custom 4-digit display (with decimal
points and function icons) and six keys (SET, UP, DOWN, DEFROST,
AUXILIARY and ON/STAND-BY).
EVX214 and EVX215 are equipped with:
• Real Time Clock
• 3 measure inputs (cell probe, evaporator probe and condenser
probe) for NTC probes
• 2 digital inputs (door microswitch and multifunction)
• 4 digital outputs (relay, 5 for EVX215) for operation of the compres-
sor (30 A @ 250 VAC), defroster, the evaporator fan, a fourth and a
fifth use (programmable as cell light, demister resistor, auxiliary out-
put, output alarm, door resistor, evaporator valve or condenser fan);
defrosting may be electric or by hot gas.
The models are open (without covers); the user interface consists of a
4 digit custom display (with decimal points and functional icons) and
by six buttons (SET, UP, DOWN, DEFROST, AUXILIARY and
ON/STAND-BY).
Installation is completed via back panel using M3 studs.
Using the EVKEY programming key (to be ordered separately) it is
possible to carry out the uploading and downloading of the configu-
ration parameters; it is also possible to connect the controllers RICS
supervision system (via serial interface, via TTL, with MODBUS com-
munications protocol).
3.3 Installation notes
• make sure that the working conditions (operating tempera-
ture, humidity, etc.) fall within the limits inidcated in the tech-
nical specifications
• do not install the device near heat sources (resistors, hot air
ducts, ect.), near devices with strong magneti (large diffu-
sors etc.) and places subject to direct sunlight, rain, humidity,
excessive dust, mechanical vibrations or shaking
• in accordance with laws on safety, protection against possi-
ble contact with electrical parts must be ensured via the cor-
rect installation of the instrument; all the parts that ensure
such protection must be secured in such a way that they
cannot be removed without the using a special tool.
Operating Statuses:
• “on” status (the instrument is powered and on: the regulators can be
switched on)
• “stand-by” status (the instrument is powered but is switched off via
software: the regulators are switched off; the possibility to manually
switch on/switch off the cell light or auxiliary output depends on
parameter u2)
• “off” status (the instrument is not powered).
Hereafter, with the word “start-up” means the passage from stand-by
status to on status; the word “shutdown” means the passage from on
status to stand-by status.
When th e power is switched back on, the instrument displays the
status that it was in at the time it was disconnected.
4.2 Manual switching on/off of the instrument
• make sure that the keyboard is not locked and that no other opera-
tion is in progress
• press and hold down the ON/STAND-BY key for 2 sec: the on/
stand-by LED will switch off/on.
For EVX204, EVX214, EVX205 and EVX215:
Using the multifunction input it is possible to remotely switch on/off
the instrument.
4.3 The display
If the instrument is switched on, during normal operation, the display
will show the cell temperature, except during defrosting, when the
instrument will show the temperature established with parameter d6.
If the instrument is switched off, the display will be switched off.
4.4 Evaporator temperature display (but EVX201)
• make sure that the keyboard is not locked and that no other opera-
tion is in progress
• press down the DOWN key for 1 sec: the display will show the first
available label
• press and release the UP or the DOWN key to select “Pb2”
• press and release the SET key.
To exit the procedure:
• press and release the SET key and do not operate for 60 sec
• press and release the UP key and the DOWN key until the display
shows the cell temperature and then do not operate for 60 sec.
Alternatively:
• press and release the ON/STAND-BY key.
If the evaporator probe is absent (parameter P3 = 0), the label “Pb2”
will not be displayed.
4.5 Condenser temperature display (EVX204, EVX214,
EVX205 and EVX215 only)
• make sure that the keyboard is not locked and that no other opera-
tion is in progress
• press down the DOWN key for 1 sec: the display will show the first
label available
• press and release the UP key or the DOWN key to select “Pb3”
• press and release the SET key.
To exit the procedure:
• press and release the SET key and then do not operate for 60 sec
• press and release the UP or DOWN key until the display shows the
cell temperature and then do not operate for 60 sec.
Alternatively:
• press and release the ON/STAND-BY key.
If the condenser probe is absent (parameter P4 = 0), the label “Pb3”
will not be displayed.
4.6 Activation/disactivation of Overcooling function
• make sure that the keyboard is not locked and that no other opera-
tion is in progress, that defrosting and/or dripping is not in progress
and that the evaporator fan is off (the last two but EVX201)
• press and hold down the UP key for 4 sec: the Overcooling LED will
light up.
During the Overcooling function the working setpoint is reduced by
the temperature established with parameter r5; the operation lasts for
the amount of time established with parameter r6. During Overcooling
defrosting is never activated; if the defrosting interval expires when the
function is in progress, defrosting will be activated at the end of the
function.
4.7 Manual Activation of Defrosting
• make sure that the keyboard is not locked and that no other opera-
tion is in progress; ensure that the Overcooling function is not in
progress
• press and hold down the DEFROSTING key for 4 sec.
For EVX203, EVX204, EVX214, EVX205 and EVX215:
If the evaporator probe function is that of the defrosting probe (param-
eter P3=1) and upon activation of defrosting, the temperature of the
evaporator is higher than that established with parameter d2, the
defrosting function will not be activated.
4.8 Operation for low or high percentage of relative
humidity (but EVX201 and provided parameter F0 is
set to 5)
During operation for low percentage of relative humidity, the evapo-
rator ventilator will be switched on if the compressor is switched off
(parameter F4 determines the amount of time it is switched off while
parameter F5 determines the amount of time it is switched on).
During operation for a high percentage of relative humidity the evapo-
rator fan is always on.
Evco S.p.A. • Code 104X201E314 • page 2/8
4.8.1 Manual activation of operation for low or high
percentage of relative humidity (but EVX201 and
provided parameter F0 is set to 5)
• make sure that the keyboard is not locked and that no other proce-
dures are in progress
• press the SET and the UP keys for 4 sec: the display will show “rhL”
(operation for low percentage of relative humidity) or “rhH” (opera-
tion for high percentage of relative humidity) for 10 sec.
To restore the normal display before the operation is complete:
• press a key.
Activation of the operation for a low or high percentage of relative
humidity can be done using parameter F6.
If parameter F0 is not set to 5, pressing the SET and the UP keys will
cause the display of the following message “- - - -“ for
1 sec.
4.8.2 Display of type of operation in progress (for low or
high percentage of relative humidity, but EVX201
and provided that parameter F0 is set to 5)
• make sure that no other procedure is in progress
• press and release the SET and the UP keys: the display will show
“rhL” (operation for low percentage of relative humidity) or “rhH”
(operation for high percentage of relative humidity) for 10 sec.
To restore the normal display before the operation is complete:
• press a key.
If parameter F0 is not set to 5, pressing the SET and UP keys will cause:
• the display of the message “- - - -“ for 1 sec if the keyboard is not
locked
• display of the label “Loc” for 1 sec if the keyboard is locked..
4.9 Manual switching on/off of the cell light (EVX204,
EVX214, EVX205 and EVX215 only and provided
that parameter u1 and/or parameter u11 is set to 0)
• make sure that no other procedure is in progress
• press and release the AUXILIARY key : the LED light will switch
on/off.
Using the door microswitch it is also possible to switch on/off the cell
light by remote; see also parameter u2.
If parameter u1 is set at 0 (i.e. the utility managed by the fourth output
is the cabinet light) and parameter u11 is set at 2 (i.e. the utility managed
by the fifth output is the auxiliary output), holding the AUXILIARY
key down for 2 s will cause the switch-on/off of the multipurpose LED
and of the auxiliary output.
4.10 Switching on the demisting resistors (EVX204,
EVX214, EVX205 and EVX215 only and provided
that parameter u1 and/or parameter u11 is set to 1)
• ensure that the instrument is switched on and that no other proce-
dure is in progress.
• press the AUXILIARY key for 2 sec: the multifunction LED will light
up and the resistors will be switched on, both for the amount of time
established with parameter u6.
Manually switching off the demisting resistors is not permitted (that is,
before the time established with parameter u6 expires).
4.11
Manually switch on/off of the Auxiliary output
(EVX204, EVX21
4, EVX205 and EVX215
only and
provided parameter u1 and/or parameter u11 is set
to 2)
• ensure that the keyboard is not locked and that no other procedure
is in progress
• press and release the AUXILIARY key.
Using the multifunction input it is also possible to remotely switch on/
off the auxiliary output.
If parameter u1 is set at 2 (i.e. the utility managed by the fourth output
is the auxiliary output) and parameter u11 is set at 0 (i.e. the utility
managed by the fifth output is the cabinet light), holding the
AUXILIARY key down for 2 s will cause the switch-on/off of the
cabinet light LED and of the cabinet light.
If the auxiliary output has been switched on manually, then it can also
be switched off manually (similarly, if the auxiliary output has been
remotely switched on, then it can only be switched off in the same
manner); see also parameter u2.
4.12
Energy Saving (but EVX201)
During function Energy Saving the working setpoint is increased of
the temperature you have set with parameter r4 and the evaporator
fan is turned on cyclically, on condition that parameter F0 has value
1 or 2 (parameter F13 sets the time the fan remains turned off and
parameter F14 the time it remains turned on).
Once the time you have set with parameter i10 has passed (without
activations of the door switch digital input and on condition that the
cabinet temperature has reached the working setpoint) function En-
ergy Saving is activated automatically (as long as the input will be
activated).
4.12.1 Activation/deactivation of function Energy Saving
with effect on the compressor only
EVX205 and EVX215
)
(EVX204, EVX21
Through the multipurpose input it is possible to activate/deactivate
function Energy Saving at a distance.
Function Energy Saving can be activated in real time too, to the time
you have set with parameter HE1; in this case the duratin of the func-
tion can be set through parameter HE2.
4.13 Locking/unlocking the keyboard
To lock the keyboard:
• make sure that no other procedure is in progress
• press and hold down the DOWN and ON/STAND-BY keys for 1
sec: the display will show the message “Loc” for 1 sec.
If the keyboard is locked, the following are not permitted:
• manual switch on/off of the instrument
• display of evaporator temperature (via the procedure explained in
paragraph 4.4)
• display of the condenser temperature (via the procedure indicated
in paragraph 4.5)
• activation/disactivation of Overcooling function
• manual activation of defrosting
• activation of operation for low of high percentage of relative humid-
ity and learning the kind of operation
• manual switch on/off of the auxiliary output
• see information regarding the HACCP alarms
• cancellation of HACCP alarm list
• changing the date and time
• changing the working setpoint (with the procedure described in
5.2)
• display of compressor operation hours
• cancellation of compressor operation hours
The operations cause the display of the label “Loc” per
1 sec.
To unlock the keyboard:
• press and hold down the DOWN and ON/STAND-BY keys for 1
sec: the display will show the message “UnL” for 1 sec.
4.13 Silencing the Buzzer
• ensure that no other procedure in is progress
• press a key (the first pressing of the key will not cause the effect asso-
ciated with that key).
For EVX204, EVX214, EVX205 and EVX215:
If parameter u1 and/or parameter u11 is set to 3 and parameter u4 is
set to 1, pressing the key will also disactivate the alarm output.
If parameter u9 is set to 0, the buzzer will not be activated.
5 SETTINGS
5.1 Setting the day and real time (EVX214 and EVX215
only)
• ensure that the keyboard is not locked and that no other procedures
are in progress
• press and hold down the DOWN key for 1 sec: the display will show
the first label available
• press and release the UP or DOWN key to select “rtc”.
To change the year:
• press and release the SET key: the display will show “yy” followed
by the last two numbers in the year and the clock LED will flash
• press and release the UP or DOWN key within 15 sec.
To change the month:
• press and release the SET key while changing the year: the display
will show “nn” followed by the two numbers of the month
• press and release the UP or DOWN key within 15 sec.
To change the day of the month:
• press and release the SET key while changing the month: the dis-
play will show “dd” followed by the two numbers of the day
• press and release the UP or DOWN key within 15 sec.
To change the hour:
• press and release the SET key while changing the day of the month:
the display will show “hh” followed by the two numbers of the
hour
• press and release the UP or DOWN key within 15 sec.
The hour is displayed using the 24 hour system.
To change the minutes:
• press and release the SET key while changing the hour: the display
will show “nn” followed by the two minute numbers
• press and release the UP and DOWN keys within 15 sec
• press and release the SET key or do not operate for 15 sec: the clock
LED will switch off.
To exit the procedure:
• press and release the UP or DOWN key until the diplay shows the
cell temperature and then do not operate for 60 sec.
Alternatively:
• press and release the ON/STAND-BY key.
5.2 Setting the working setpoint
• ensure that the keyboard is not locked and that no other procedure
is in progress.
• press and release the SET key: the compressor LED will flash
• press and release the UP or DOWN key within 15 sec; see also
parameters r1, r2 and r3
• press and release the SET key or do not operate for 15 sec: the
compressor LED will switch off and then the instrument will exit the
procedure.
To exit the procedure before the operation is complete:
• do not operate for 15 sec (any changes will be saved).
The working setpoint can also be set via parameter SP.
5.3 Setting the configuration parameters
To begin the procedure:
4,
• ensure that no other procedure is in progress
• hold down the UP and DOWN keys for 4 sec: the display will show
“PA”
• press and release the SET key
• press and release the UP or DOWN key within 15 sec to set “-19”
• press and release the SET key or do not operate for 15 sec
• hold down the UP and DOWN keys for 4 sec: the display will show
“SP”.
To select a parameter:
• press and release the UP or DOWN key.
To change a parameter:
• press and release the SET key.
• press and release the UP or DOWN key within 15 sec.
• press and release the SET key or do not operate for 15 sec.
To exit the procedure:
• hold down the UP and DOWN keys for 4 sec and do not operate
for 60 sec (any changes will be saved).
After changing the parameters, suspend power supply flow
to the instrument.
5.4 Restoring the Manufacturer’s Settings
To begin the procedure:
• make sure that no other procedure is in progress.
• hold down the UP and DOWN key for 4 sec: the display will show
“PA”
• press and release the SET key
• press and release the UP or DOWN key within 15 sec to set “149”
• press and release the SET key or do not operate for 15 sec
• hold down the UP and DOWN keys for 4 sec: the display will show
“dEF”
• press and release the SET key
• press and release the UP or DOWN key within 15 sec to set “1”
• press and release the SET key or do not operate for 15 sec: the
display will show “dEF” flashing for 4 sec, after which the instru-
ment will exit the procedure.
• suspend the power supply to the instrument.
To exit the procedure before the operation is complete:
• hold down the UP and DOWN keys for 4 sec during the procedure
(that is, before setting “1”: the settings wil not be restored).
Make sure that the manufacturer’s settings are appropriate
(see chapter 12).
6 HACCP FUNCTION
6.1 Preliminary notes
EVX201, EVX203, EVX204, EVX205 and EVX215:
The instrument is able to store up to 3 HACCP alarms.
The instrument provides the following inoformation:
• the critical value
• the alarm duration (from 1 min to 99 hours and 59 min, partial if the
alarm is in progress).
CODE ALARM TYPE (CRITICAL VALUE)
AL minimum temperature alarm (the minium cell tempera-
ture during any alarm of this type)
AH maximum temperature alarm (the maximum cell tempera-
ture during any alarm of this type)
id door microswitch input alarm (the maximum cell tempera-
ture during any alarm of this type; see also parameter i4
Important Notes:
• the codes are displayed in the order shown in the table
• the instrument stores the minimum and maximum tem-
perature alarms provided the temperature associated
with the alarm is that of the cell (parameter A0 = 0)
• the instrument updates the information regarding the
the alarm provided the critical value of the new alarm is
more critical than that stored alarm or provided the infor-
mation has already been displayed.
• if the instrument is switched off, no alarms will be stored.
When the problem that caused the alarm disappears, the display is
restored to normal operation.
The HACCP LED provides information regarding the HACCP alarm
storage status; see paragraph 8.1.
For EVX214 and EVX215:
The instrument is able to store up to 9 HACCP alarms, after which the
most recent alarm will substitute the oldest.
The instrument provides the following information:
• critical value
• the date and time the alarm was signaled
• the duration of the alarm (from 1 min to 99 hours and 59 min, partial
if the alarm is in progress).
CODE ALARM TYPE (CRITICAL VALUE)
AL minimum temperature alarm (the minimum temperature
of the cell during the alarm)
AH maximum temperature alarm (the maximum temperature
of the cell during the alarm)
id door microswitch input alarm (the maximum tempera-
ture of the cell during the alarm); see also parameter i4
PF power supply interruption alarm (cell temperature when
power is restored); see also parameters A10 and A12
Notes:
• the instrument stores the minimum and maximum tem-
perature alarm provided the temperature associated with
the alarm is that of the cell (parameter A0 = 0)
• to avoid repeatedly storing alarms due to interruptions
in the power supply, disconnect the power when the
instrument is switched off
• if the duration of the power supply interruption alarm is
long enough to cause a clock error (code “rtc”), the instru-
ment will not provide any information about the alarm
duration
• if the instrument is switched off no alarms will be stored
When the problem that caused the alarm disappears, the display is
restored to normal operation, with the exception of the power supply
interruption alarm (code “PF”) which requires manual restoration of
the normal display.
Evco S.p.A. • Code 104X201E314 • page 3/8
To manually restore the normal display:
• press a key.
If parameter u1 and/or parameter u11 is set to 3, pressing the key will
disactivate the alarm output.
The HACCP LED provides information regarding the storage status of
the alarms; see paragraph 8.1.
6.2 Display of HACCP alarm information
For EVX201, EVX203, EVX204, EVX205 and EVX215:
To start the procedure:
• ensure that the keyboard is not locked and that no other procedure
is in progress
• hold down the DOWN key for 1 sec: the display will show the first
label available
• press and release the UP or DOWN key to select “LS”
• press and release the SET key: the display will show one of the codes
included in the table in paragraph 6.1.
To select an alarm:
• press and release the UP or DOWN key (to select, for example, “AH”).
To view the information about the alarm:
• press and release the SET key: the HACCP LED will stop flashing and
remain permanently on and the display will show the following
sequence of information (for example):
INFO. MEANING
8.0 the critical value is 8.0 °C/8 °F
dur the display is about to show the duration of the alarm
h01 the alarm has been going off for 1 hour (data continues ...)
n15 the alarm lasted for 1 hour and 15 min
AH the alarm selected
The display shows each message for 1 sec.
To exit the sequence of information:
• press and release the ON/STAND-BY key: the display will show the
alarm selected (in the example “AH”).
To exit the procedure:
• exit the sequence of information
• press and release the UP or DOWN key until the display shows the
cell temperature and then do not operate for 60 sec.
Alternatively:
• exit the sequence of information.
• press and release the ON/STAND-BY key.
If the instrument does not have any alarms stored, the label “LS” will
not be displayed.
For EVX214 and EVX215:
To start the procedure:
• ensure that the keyboard is not locked and that no other operation
is in progress
• hold down the DOWN key for 1 sec: the display will show the first
label available
• press and release the UP or DOWN key to select “LS”
• press and release the SET key: the display will show the most recent
alarm code (or rather, one of the codes shown in the table in para-
graph 6.1) followed by the number “1”; the larger the number is that
follows the alarm code, the older the alarm is).
To select an alarm:
• press and release the UP or DOWN key (to select, for example, “AH3”).
To see information regarding the alarm:
• press and release the SET key: the HACCP LED will stop flashing and
will remain permanently on and the display will show the following
sequence of information (for example):
INFO. MEANING
8.0 the critical value is 8.0 °C/8 °F
StA the display is about to show the date and hour in which
the alarm was signaled
y09 the alarm was signaled in 2009 (data continues ...)
n03 the alarm was signaled in March (data continues ...)
d26 the alarm was signaled on the 26th of March 2009
h16 the alarm was signaled at 16:00 (other data continues)
n30 the alarm was signaled at 16:30
dur the display is about to show the alarm duration
h01 the alarm lasted for 1 hour (other data continues)
n15 the alarm lasted 1 hour and 15 min
AH3 the alarm selected
The display will show each message for 1 sec.
To exit the information sequence:
• press and release the ON/STAND-BY key: the display will show the
selected alarm (“AH3” in the example).
To exit the procedure:
• exit the information sequence
• press and release the UP or DOWN key until the display shows the
cell temperature or do not operate for 60 sec.
Alternatively:
• exit the information sequence
• press and release the ON/STAND-BY key.
If the instrument does not have any alarms stored, the label “LS” will
not be displayed.
6.3 Cancelling the HACCP alarm list
• ensure that the keyboard is not locked and that no other operation
is in progress
• hold down the DOWN key for 1 sec: the display will show the first
available label
• press and release the UP or DOWN key to select “rLS”
• press and release the SET key
• press and release the UP or DOWN key within 15 sec to set “149”
• press and release the SET key or do not operate for 15 sec: the
display will show a flashing “- - - -” for 4 sec and the HACCP LED will
switch off and then the instrument will exit the procedure.
If the instrument does not have any alarms stored, the label “rLS” will
not be displayed.
7 CALCULATING COMPRESSOR OPERATION HOURS
(but EVX201)
7.1 Preliminary notes
The instrument is able to store up to 9,999 hours of compressor op-
eration, after which the number “9999” starts flashing.
7.2 Display of Compressor Operation Hours
• make sure that the keyboard is not locked and that no other opera-
tion is in progress
• press and hold down the DOWN key for 1 sec: the display will show
the first available label
• press and release the UP or down DOWN key to select “CH”
• press and release the SET key.
To exit the procedure:
• press and release the SET key or do not operate for 60 sec
• press and release the UP or down DOWN key until the display
shows the cell temperature or do not operate for 60 sec.
Alternatively:
• press and release the ON/STAND-BY key.
7.3 Cancelling Compressor Operation Hours
• Make sure that the keyboard is not locked and that no other proce-
dure is in progress
• press and hold down the DOWN key for 1 sec: the display will show
the first available label
• press and release the UP or DOWN key to select “rCH”
• press and release the SET key
• press and release the UP or DOWN key within 15 sec to set “149”
• press and release the SET key or do not operate for 15 sec: the
display will show a flashing “- - - -” for 4 sec then the instrument will
exit the procedure.
8 WARNING LIGHTS AND DIRECTIONS
8.1 Warning lights
LED MEANING
compressor LED light
if the LED is on, then the compressor is on
if the LED is flashing:
• the working setpoint is in the process of being changed
(via the procedure described in paragraph 5.2)
• compressor protection operation in progress:
- parameters C0, C1, C2
- parameter i7 (EVX204, EVX214, EVX205 and EVX215
only)
Defrost LED
If it is on:
• defrosting is in progress
if it is flashing:
• predripping in progress:
- parameter d16 (but EVX201)
• defrosting required but a compresser protection opera-
tion is in progress:
- parameters C0, C1 and C2 (but EVX201)
• dripping in progress:
- parameter d7 (but EVX201)
• heating of coolant liquid in progress:
- parameter d15 (but EVX201)
Evaporator fan LED light
If it is on, the evaporator fan is on (but EVX201)
If it is flashing, the evaporator fan is disactivated
- parameter F3 (but EVX201)
Cell light LED
If it is on, the cell light has been switched on manually
(EVX204, EVX214, EVX205 and EVX215 only and provided
that parameter u1 and/or parameter u11 is set to 0)
if it is flashing, the cell light has been switched on by re-
mote:
- parameter i0 (EVX204, EVX214, EVX205 and EVX215
only and provided that parameter u1 and/or parameter
u11 is set to 0)
Multifunction LED light
If it is on:
• the demisting resistors are switched on (EVX204, EVX214,
EVX205 and EVX215 only and provided that parameter
u1 and/or parameter u11 is set to 1)
• the auxiliary output has been manually switched on
(
EVX204, EVX214, EVX205 and EVX215 only
vided that parameter
u1 and/or parameter u11
and pro-
is set to 2)
• the door resistors will be switched on (EVX204, EVX214,
EVX205 and EVX215 only and provided that parameter
u1 and/or parameter u11 is set to 4)
• the evaporator valve will be switched on (EVX204,
EVX214, EVX205 and EVX215 only and provided that
parameter u1 and/or parameter u11 is set to 5)
• the condenser fan will be switched on (EVX204, EVX214,
EVX205 and EVX215 only and provided that parameter
u1 and/or parameter u11 is set to 6)
if it is flashing:
• the auxiliary output has been switched on remotely:
- parameter i5 (EVX204, EVX214, EVX205 and EVX215
only and provided that parameter u1 and/or parameter
u11 is set to 2)
• a delay in switching off the condenser fan is in progress:
- parameter F12 (EVX204, EVX214, EVX205 and EVX215
only and provided that parameter u1 and/or parameter
u11 is set to 6)
Clock LED
if flashing, the day and real time are in the process of being
changed (EVX214 and EVX215 only)
HACCP HACCP LED
if it is on, all information regarding HACCP alarms has not
been displayed
if it is flashing, the instrument has stored at least one new
HACCP alarm
if it is off, all information regarding the HACCP alarms has
been displayed or the list of HACCP alarms has been can-
celled
Energy Saving LED
if it is on, the Energy Saving function is running (but EVX201)
- parameters r4, F13, F14, i5, i10, HE1 and HE2
maintenance LED
if on, compressor maintenance is required (but EVX201):
- parameter C10
Overcooling LED
if on, the Overcooling function is on progress
- parameters r5 and r6
Alarms LED
if on, an alarm or error is in progress
°C Celsius grade LED
if on, the temperatures will be displayed using the Celsius
grade unit of measurement:
- parameter P2
°F Fahrenheit grade LED
if on, the temperatures will be displayed using the Fahren-
heit grade unit of measurement:
- parameter P2
on/stand-by LED
if on, the instrument is in stand-by mode
8.2 Signal Descriptions/Explanations
CODE MEANING
rhL operation for a low percentage of relative humidity in
progress
rhH operation for a high percentage of relative humidity in
progress
Loc the keyboard is locked:
- see paragraph 4.13
the working setpoint is blocked:
- parameter r3
- - - - the operation requested is not available
9 ALARMS
9.1 Alarms
CODE MEANING
AL Minimum alarm temperatures (HACCP alarms)
Solutions:
• check the cell temperature (EVX201 only)
• check the temperature associated with the alarm (but
EVX201)
• refer to:
- parameters A1 and A2 (EVX201 only)
- see parameters A0, A1 and A2 (but EVX201)
Main consequences:
• the instrument will store the alarm (EVX201 only)
• if parameter A0 is set to 0, the instrument will store the
alarm (but EVX201)
• the alarm output will be activated (provided that param-
eter u1 and/or parameter u11 is set to 3)
AH Maximum temperature alarm (HACCP alarms)
Solutions:
• check the cell temperature
• refer to:
- parameters A4 and A5
Main consequences:
• the instrument will store the alarm
• the alarm output will be activated (provided that param-
eter u1 and/or parameter u11 is set to 3)
id Door microswitch input alarm (HACCP alarms)
Solutions:
• verify the cause of the input activation
• see parameters i0, i1 and i4
Main consequences:
• the effect established with parameter i0
• if parameter is set to 1, the instrument will store the alarm,
provided parameter i2 is not set to -1
•the alarm output will be activated (provided that param-
eter u1 and/or parameter u11 is set to 3)
PF Power supply interruption alarm (HACCP alarms; only
EVX214 and EVX215)
Solutions:
• verify the cause of the interruption in power supply
• parameters A10 and A12 are seen
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