5
P1 Parameter
Function: To set controller for heating
or cooling.
0 1 0
To change
the P1
parameter,
press the
SET key.
Use UP/DOWN keys to get
desired value & press set
to confirm.
0: Cooling mode and
1: Heating mode.
Min Max
Fac.
6
8
P4 Parameter Function: To set the differential.
To change
the P4
parameter,
press the
SET key.
Use UP/DOWN keys to set
desired value.
Differential between cut out and
cut in temperature can be set
O O
between 1 C to 20 C.
O
1 C
Min Max
Fac.
O
20 C O
2 C
Example (in cooling mode) :
O
If the set point is set at 10 C and
O
differential is set at 2 C, then when
O
the system reaches 10 C, the relay
will cut out. Since the differential is
2, the relay will cut in (restart) at
O O O
12 C (10 C+2 C).
9
P5 Parameter Function: To set probe calibration.
To change
the P5
parameter,
press the
SET key.
To compensate for this error, you
may need to add or minus the
degrees required to achieve the
correct temperature. Setting value
O O
is from -10 C to +10 C.
Use UP/DOWN keys to set desired
value.
In time it may be possible that the
display may be offset by a degree
or so.
O
-10 C
Min Max
Fac.
O
10 C O
0 C
Example : The temperature on
O
the display is 28 C, whereas the
O
actual temperature is 30 C. You will
need to set the P5 mode to 2,
which means that once out of the
programming mode, the
temperature will show
O O O
30 C (28 C + 2 C).
10
P2 Parameter
Function: To set maximum allowable
high temperature limit.
To change
the P2
parameter,
press the
SET key.
Use UP/DOWN keys to set
desired value.
Once set at a particular
value, this will not allow the
set point to go above this
value.
the display will show Ht (High
Temp.) indicating that the
temperature has gone above the
value in this parameter and at this
point the buzzer will activate.(if AL
parameter is set to 1)
Example : Setting this parameter
O
at 25 C will not allow the
O
set point to go above 25 C. Also,
O
if the temperature reaches 25 C,
O
XX C
Max
Fac.
O
99 C O
99 C
Min
(Message on display)
H
P6 Parameter
0 Min
99 Min
3 Min
Function: To set time delay
between relay restart time.
To change
the P6
parameter,
press the
SET key.
Min Max
Fac.
Use UP/DOWN keys to set desired
value.
This parameter is used to protect
the compressor from restarting in a
short period of time and can be set
between 0 to 99 minutes.
Example : If this parameter is set
at 3 minutes, the relay will cut off at
the set temperature, but will not
restart for a minimum of 3 minutes,
even if the differential is achieved
earlier. This parameter is good to
protect the life of the compressor
when there are power fluctuations
and the compressor is switched off
and on within a few seconds.
Flashing
Time delay in progress
7
Function: To set minimum allowable
low temperature set point.
Use UP/DOWN keys to set desired
value. Once set at a particular
value, this will not allow the set
point to go below this value.
Example : Setting this parameter
O
at -30 C will not allow the set point
O
to go below -30 C. Also, if the
O
temperature reaches -30 C, the
display will show Lt (LowTemp.)
indicating that the temperature has
gone below the value in this
parameter and at this point the
buzzer will activate.
P3 Parameter
O
-50 C
Max
Fac.
O
XX C O
-50 C
To change
the P3
parameter,
press the
SET key.
Min
(Message on display)
XX = Set Point
XX = Set Point
