5
P1
Parameter
Function : T
or cooling.
o set controller for heating
CLG
HTG CLG
T
the P1
parameter,
press the
SET key.
o change
Use UP/DOWN keys to get desired
value & press set to confirm.
CLG: Cooling mode and
HTG: Heating mode.
Min
Max
Fac.
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 between
O
O
1.0 C to 20.0 C.
O
0.5 C
Min
Max
Fac.
O
20.0 C
O
2.0 C
Example (in cooling mode) :
O
If the set point is set at 10.0 C and
O
differential is set at 2.0 C, then
O
when the system reaches 10.0 C,
the relay will cut out. Since the
differential is 2.0, the relay will cut in
O
O
O
(restart) at 12.0 C (10.0 C+2.0 C).
9
P5
Parameter
Function : To set probe calibration.
To change
the P5
parameter,
press the
SET key.
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.
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 -10.0 C to +10.0 C.
O
-10.0 C
Min
Max
Fac.
O
10.0 C
O
0.0 C
Example :
The temperature on
O
the display is 28.0 C, whereas the
O
actual temperature is 30.0 C. You
will need to set the P5 mode to 2.0,
which means that once out of the
p r o g r a m m i n g m o d e , t h e
O
temperature will show 30.0 C
O
O
(28.0 C + 2.0 C).
10
P6
Parameter
0 Min 20 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 20 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
p o w e r f l u c t u a t i o n s a n d t h e
compressor is switched off and on
within a few seconds.
Flashing
Time delay in progress
6
P2
Parameter
Function : T
high temperature limit.
o set maximum allowable
T
the P2
parameter,
press the
SET key.
o change
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.
Example :
Setting this parameter
O
at 50.0 C will not allow the set point to
O
go above 50.0 C. Also, if the
O
temperature reaches 50.0 C,the
display will show HT(High Temp.)
indicating that the temperature has
gone above the value in this
parameter.
SP+0.5
Max
Fac.
O
50.0 C
O
50.0 C
Min
(Message on display)
HT
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 at
O
-50.0 C will not allow the set point to
O
go below -50.0 C. Also, if the
O
temperature reaches -50.0 C, the
display will show LT (Low Temp.)
indicating that the temperature has
gone below the value in this
parameter.
P3
Parameter
O
-50.0 C
Max
Fac.
SP-0.5
To change
the P3
parameter,
press the
SET key.
Min
(Message on display)
O
-50.0 C
LT
