05
CRC1100A
06
CRC1100A
Sr.
Parameter
Parameter setting method
Range
Min
Max
Fac
Set
O
(CS+1) C
O
0 C
1
Set point
Function : To set the cutout
point of the controller.
2
To Set other
parameter
3
SET
O
(P2-1) C
O
(SP+1) C
O
50 C
O
50 C
P2 = Max allowable high
temp. limit.
CS = Quick Freeze Set Point.
Display will change to set
value and set value will flash
on display. The set point value
can now be changed by using
UP/DOWN key. After setting
the desired value, press the
set key and you will see “- - -”
which confirms that the set
point has been stored in
memory.
Press and hold set
key for 4 seconds
and release.
Hold UP and
DOWN keys
simultaneously for
4seconds.
Display will show P2 and will
flash. To go to other
parameters, use up/down
keys.
Function : To set maximum
allowable high temperature
limit.
Use UP/DOWN key to set
desired value.
Ones set at a particular value,
this will not allow the set point
to go above this value and
below Quick Freeze Set Point
(CS).
Example :
Setting this
parameter at -25°C will not
allow the set point to go above
-25°C. Also, if the temperature
reaches -25°C , the display
will show Ht (High temp)
indicating that temperature
has gone above the value in
this parameter and at this
point the alarm relay and
buzzer will come on.
To change the
P2 parameter,
press the set key.
PROGRAMMING MODE
HIGH SET ALARM
P2 Parameter
Key Introduction
Defrost Key :
To force a manual defrost, press defrost key for 4 seconds. The unit will go
into defrost mode. If E4 parameter is set to 0, or coil temp. is greater than defrost stop
temp. (E5) this key remain inactive.
SET
Mute Key :
This key will mute the buzzer and reset the alarm relay, Down key .
Quick Freeze :
This key used to put controller in quick freeze mode. To activate this
mode press QF key for 4 seconds. The compressor operates in this mode for time
duration set through quick freeze time duration (Ct) parameter and set pint through
Quick freeze set point (CS) parameter, UP key.
Set Key
No.
O
1 C
O
20 C
O
2 C
5
Function : To set the comp.
differential (hysteresis).
(10°C + 2°C).
Use UP/DOWN key to set
desired value.
Differential between cutout
and cutin temperature can be
set between 1°C to 20 °C.
Example :
If the set point is
set at 10°C and differential is
set at 2°C, then when the
system reaches 10°C, the
comp. Relay will cutout. Since
the differential is 2°C, the
comp. Relay will cutin at 12°C
P4 parameter,
press the SET key.
To change the
O
-10 C
O
10 C
O
0 C
6
Function : To set room probe
offset calibration.
In time it may be possible that
the temp. on display may be
offset by a degree or so. To
compensate for this error, you
may need to add or minus the
degrees required to achieve
the correct temperature.
Example :
The temperature
on the display is 28°C,
whereas the actual
temperature is 30°C. You will
need to set this parameter to
2°C, which means that once
out of programming mode, the
temperature will show
30°C(28°C + 2°C).
Use UP/DOWN key to set
desired value.
press the SET key.
To change the
P5 parameter,
PROGRAMMING MODE
ROOM PROBE DIFF.
P4 Parameter
PROGRAMMING MODE
ROOM PROBE CALIB
P5 Parameter
Example :
Setting this
parameter at -30°C will not
allow the CS point to go
below -30°C. Also, if the
temperature reaches -30°C ,
the display will show Lt (Low
temp) indicating that
temperature has gone below
the value in this parameter
and at this point the alarm
relay and buzzer will come
on.
O
-50 C
O
(CS-1) C
O
-50 C
4
Function : To set minimum
allowable low temperature
limit.
Use UP/DOWN key to set
desired value.
Ones set at a particular value,
this will not allow the CS (QF
Set Point) to go below this
value.
P3 parameter,
press the set key.
To change the
PROGRAMMING MODE
LOW SET ALARM
P3 Parameter
