9 - EN
EWRC 300/500 NT
English
PARA. DESCRIPTION
U.M.
RANGE
DEFAULT
H23
Configuration of digital output 3 (OUT 3).
num
0 ... 13
3
0
= disabled
1
= compressor
2
= defrost 1
3
= Evaporator fans
4
= alarm
5
= AUX
6
= Stand-by
7
= light
8
= Buzzer output
9
= defrost 2
10
= compressor 2
11
= frame heater
12
= Condenser fans
13
= Compressor Pump Down
H42
Evaporator probe (Pb2) present
n
(0) = not present
y
(1) = present
num
n/y
y
rEL
Firmware version release (e.g. 1,2,...). Read only. See Technical Support.
/
/
/
tAb
Map code. Read only. See Technical Support.
/
/
/
COPY CARD parameters (FPr)
UL
Upload. Transfer of programming parameters from instrument to Copy Card
/
/
/
dL
Download. Transfer of programming parameters from Copy Card to instrument
/
/
/
Fr
Formatting. To erase data on Copy Card.
IMPORTANT: If parameter “Fr” is used, the data entered will be permanently lost. This
operation cannot be reversed.
/
/
/
THE INSTRUMENT IS USED TO EDIT OTHER PARAMETERS PRESENT IN THE
INSTALLER LEVEL (inS)
How to edit the installer level parameters
Procedure applies only to more advanced applications. In this case the parameters are arranged in fold-
ers (Compressor / Defrost / Fans etc)
1) Press and hold the SET key for 3 seconds until the display shows PAr / USr
2) Use UP & DOWN to select the parameter section
inS
3) Press and release the SET key once more. The display will show the first folder
4) Press and release the SET key once more. The upper display will show the first parameter in the folder,
the lower display will indicate the current parameter value
5) Using the UP & DOWN keys, find the parameter that you wish to modify
The procedure proceeds in a similar manner to that described for the User parameters (points 4-7)
OPERATION IN DEFAULT CONFIGURATION
The instrument is configured for negative cold. For positive cold, disable the evaporator probe Pb2 (set
H42
=n) and set relay OUT3 (parameter
H23
=6) to prevent continuous ventilation.
COMPRESSOR
The compressor is active if the cold room temperature detected by Pb1 exceeds the value of SEt + differ-
ential
diF
. The compressor stops if the cold room temperature detected by Pb1 falls below the SEt value.
The instrument includes compressor on/off protection*
DEFROST
Defrost is by means of electric heaters (parameter
dty
= 0) and the time counter is always active with the
instrument switched on (
dCt
=1).
Manual defrost
Manual defrost is activated by pressing and holding the ESC key (A).
If conditions for defrosting are not present, (e.g. the evaporator probe temperature is higher than the
defrost end temperature) or the parameter
OdO≠0
, the display will blink three times to indicate that the
operation will not be performed.
Default Defrost settings
dit
= 6 hours. interval between 2 defrost cycles
dSt
= 6.0 °C. defrosting end temperature set by Pb2.
The Defrost cycle may terminate due to timeout based on the parameter
dEt
(default 30 min).
EVAPORATOR FANS
Relay OUT3 is configured as fans relay and is activated in the required cases, according to delays and
parameter settings*
