EVCO EVF205N9 User Manual
Page 3
Evco S.p.A. • Code 104F205E00 • page 3/8
• press and release the key
• press and release the key or the key within 15 s. to set “149”
• press and release the key or do not operate for 15 s the display
will show flashing “- - - -” for 4 s, after which the instrument will exit
the procedure.
8
SIGNALS AND INDICATIONS
8.1
Signals
LED
MEANING
compressor LED
if on, the compressor will be on
if flashing:
• the work set-point modification will be in progress (with
the procedure indicated in paragraph 5.1)
• a compressor protection will be in progress:
- parameters C0, C1, C2
- parameter i7
defrosting LED
if it is on:
• defrosting will be in progress
• pre-dripping will be in progress
- parameter d16
if flashing:
• defrosting will be requested but a compressor protection
will be in progress:
- parameters C0, C1 and C2
• dripping will be in progress:
- parameter d7
• refrigerant fluid heating will be in progress:
- parameter d15
evaporator fan LED
if on, the evaporator fan will be on
if it flashes, the evaporator fan standstill is in progress
- parameter F3
cabinet light LED
if on, the cabinet light will have been switched-on in
manual mode (only if parameter u1 and/or parameter u11
is set at 0)
if flashing, the cabinet light will have been switched on in
remote mode:
- parameter i0 (only if parameter u1 and/or parameter
u11 is set at 0)
multipurpose LED
if it is on:
• the demisting heaters will be on (only if parameter u1
and/or parameter u11 is set at 1)
• the auxiliary output will have been switched-on in manual
mode (only if parameter u1 and/or parameter u11 is set
at 2)
• the door heaters will be on (only if parameter u1 and/or
parameter u11 is set at 4)
• the evaporator valve will be activated (only if parameter
u1 and/or parameter u11 is set at 5)
• the condenser fan will be on (only if parameter u1 and/or
parameter u11 is set at 6)
if flashing:
• the auxiliary output will have been switched-on in remote
mode:
- parameter i5 (only if parameter u1 and/or parameter
u11 is set at 2)
• the condenser fan switch-off delay will be in progress:
- parameter F12 (only if parameter u1 and/or parameter
u11 is set at 6)
HACCP HACCP LED (only if parameter A13 is set at 1)
id it is on, all of the information regarding the HACCP alarms
has not been displayed
if it flashes, the instrument will have memorised at least one
new HACCP alarm
if it is off, all of the information regarding the HACCP alarms
will have been displayed or the list of HACCP alarms will
have been deleted
Energy Saving LED
if on, the Energy Saving function will be in progress:
- parameters r4, F13, F14, i5 and i10
maintenance LED
if on, compressor maintenance will be requested:
- parameter C10
Overcooling LED
if on, the Overcooling function will be in progress
- parameters r5 and r6
alarm LED
if it is on, an alarm or an error is in progress
°
C
degree Celsius LED
if it is on, the unit of measurement of the temperatures will
be the degree Celsius:
- parameter P2
°
F
degree Fahrenheit LED
if it is on, the unit of measurement of the temperatures will
be the degree Fahrenheit:
- parameter P2
on/stand-by LED
if it is on, the instrument is in the stand-by status
When the cause of the alarm has disappeared, the instrument will go
back to normal functioning, except for the following alarms:
• the pressure switch alarm (“iSd” code), which requires the instrument
to be switched off or the power supply to be cut-off
• the compressor blocked due to condenser temperature alarm (“CSd”
code), which requires the instrument to be switched off or the power
supply to be cut-off
• the defrosting concluded due to maximum duration alarm (“dFd”
code), which requires a key to be pressed.
10
ERRORS
10.1
Errors
CODE MEANING
Pr1
Cabinet probe error
Solutions:
• check that the probe is the NTC type
• check the integrity of the probe
• check the instrument-probe connection
• verify the temperature of the cabinet
Main consequences:
• the activity of the compressor will depend on parameters
C4 and C5
• defrosting will never be activated
• the alarm output will be activated (only if parameter u1
and/or parameter u11 is set at 3)
• the door heaters will be switched-off (only if parameter u1
and/or parameter u11 is set at 4)
• the evaporator valve will be deactivated (only if
parameter u1 and/or parameter u11 is set at 5)
Pr2
Evaporator probe error
Solutions:
• the same as the previous case but relative to the evaporator
probe
Main consequences:
• if parameter P3 is set at 1, defrosting will last for the time
established with parameter d3
• if parameter P3 is set at 1 and parameter d8 is set at 2 or 3,
the instrument will function as if parameter d8 is set at 0
• if parameter F0 is set at 3 or 4, the instrument will function
as if parameter is set at 2
• the alarm output will be activated (only if parameter u1
and/or parameter u11 is set at 3)
Pr3
Condenser probe error
Solutions:
• the same as the previous case but relative to the condenser
probe
Main consequences:
• the overheated condenser alarm (“COH” code) will
never be activated
• the compressor blocked due to condenser temperature
alarm (“CSd” code) will never be activated
• the alarm output will be activated (only if parameter u1
and/or parameter u11 is set at 3)
• if parameter u1 and/or parameter u11 is set at 6, the
condenser fan will function in parallel to the compressor
ErC
Error of compatibility user interface-control module
Solutions:
• check the compatibility user interface-control module
(check the data related in the labels)
Main consequences:
• the control module will keep working correctly
ErL
Error of communication user interface-control module
Solutions:
• check the connection user interface-control module
Main consequences:
• the control module will keep working correctly
When the cause of the alarm disappears, the instrument restores normal
functioning.
11
TECHNICAL DATA
11.1
Technical data
User interface container: open frame board behind a methacrylate
sheet.
Control module container: open frame board.
User interface protection rating (front): IP 65.
Control module protection rating: IP 00.
User interface connections: screw terminal board (at the control
module).
The user interface connects to the control module via a 4-way cable:
the maximum length allowed for the connection cable is 20 m
(65.614 ft; the cable is not supplied with the instrument).
Control module connections: 6.3 mm faston (0.248 in, power
supply and outputs), screw terminal board (to the user interface and
inputs), 6-pole connector (serial port).
Temperature of use: from 0 to 55 °C (from 32 to 131 °F, 10 ... 90%
relative humidity without condensate).
User interface power supply: the user interface is powered by the
control module.
Control module power supply: 115 ... 230 VCA, 50/60 Hz, 10 VA.
Alarm buzzer: incorporated (in the user interface).
Measurement inputs: 3 (cabinet probe, evaporator probe and
condenser probe) for NTC probes
Digital inputs: 2 (door micro switch and multipurpose) for normally
open/normally closed contact (potential free contact, 5 V 1 mA).
Range of measurement: from -40 to 105 °C (from 40 to 220 °F).
8.2
Indications
CODE MEANING
rhL
functioning due to low relative humidity percentage is in
progress
rhH
functioning due to high relative humidity percentage is in
progress
Loc
the keyboard is locked:
- see paragraph 4.13
the work set-point is blocked:
- parameter r3
- - - -
the functioning requested is not available
9
ALARMS
9.1
Alarms
CODE MEANING
AL
Minimum temperature alarm (HACCP alarm)
Solutions:
• check the temperature associated to the alarm
• see:
- see parameters A0, A1 and A2
Main consequences:
• the instrument memorises the alarm, on condition that
parameter A0 is set at 0
• the alarm output will be activated (only if parameter u1
and/or parameter u11 is set at 3)
AH
Maximum temperature alarm (HACCP alarm)
Solutions:
• verify the temperature of the cabinet
• see:
- parameters A4 and A5
Main consequences:
• the instrument memorises the alarm
• the alarm output will be activated (only if parameter u1
and/or parameter u11 is set at 3)
id
Door micro switch input alarm (HACCP alarm)
Solutions:
• check the causes that brought about the activation of the
input
• see parameters i0, i1 and i4
Main consequences:
• the effect established with parameter i0
• if parameter i4 is set at 1, the instrument memorises the
alarm, on condition that parameter i2 is not set at -1
• the alarm output will be activated (only if parameter u1
and/or parameter u11 is set at 3)
iA
Multipurpose input alarm
Solutions:
• check the causes that brought about the activation of the
input
• see parameters i5 and i6
Main consequences:
• the effect established with parameter i5
• the alarm output will be activated (only if parameter u1
and/or parameter u11 is set at 3)
iSd
Pressure switch alarm
Solutions:
• check the causes that brought about the activation of the
input
• see parameters i5, i6, i7, i8 and i9
• switch the instrument off and back on again or cut the
power supply off
Main consequences:
• the regulators will be switched off
• the alarm output will be activated (only if parameter u1
and/or parameter u11 is set at 3)
COH
Overheated condenser alarm
Solutions:
• verify the temperature of the condenser
• see parameter C6
Main consequences:
• the alarm output will be activated (only if parameter u1
and/or parameter u11 is set at 3)
• if parameter u1 and/or parameter u11 is set at 6, the
condenser fan will be on
CSd
Blocked compressor alarm
Solutions:
• verify the temperature of the condenser
• see parameter C7
• switch the instrument off and back on again: when the
instrument is switched back on, if the condenser
temperature is still above that established with parameter
C7, the power supply must be disconnected and the
condenser cleaned.
Main consequences:
• the evaporator compressor and fan will be switched off
• the alarm output will be activated (only if parameter u1
and/or parameter u11 is set at 3)
dFd
Defrosting concluded due to maximum duration alarm
Solutions:
• check the integrity of the evaporator probe
• see parameters d2, d3 and d11
• press a key to restore normal display
Main consequences:
• the instrument continues to function regularly