Condensing unit controller
Function
Code
Min.value
Max.value
Default
controller
settings
Unit controller
settings
Fan
Readout of fan speed in %
F07
-
-
-
Permitted change in fan speed (to a lower value) % per second
F14
1,0%
5,0%
1,0%
Jog speed (speed as a % when the fan is started)
F15
10%
100%
40%
Jog speed at low temperature
F16
0%
40%
10%
Definition of fan control: 0=Off; 1=Internal control. 2=External
speed control
F17
0
2
1
Minimum fan speed. Decreased need will stop the fan
F18
0%
40%
10%
Maximum fan speed
F19
40%
100%
100%
Manual control of the fan’s speed. (Only when r12 is set to -1)
F20
0%
100%
0%
Real time clock
Time at which they switch to day operation
t17
0 hrs
23 hrs
0
Time at which they switch to night operation
t18
0 hrs
23 hrs
0
Clock - Setting of hours
t07
0 hrs
23 hrs
0
Clock - Setting of minute
t08
0 min.
59 min.
0
Clock - Setting of date
t45
1 day
31 day
1
Clock - Setting of month
t46
1 mon.
12 mon.
1
Clock - Setting of year
t47
0 year
99 year
0
Miscellaneous
Network address
o03
0
240
0
On/Off switch (Service Pin message)
IMPORTANT! o61 must be set prior to o04
(used at LON 485 only)
o04
0/Off
1/On
0/Off
Access code (access to all settings)
o05
0
100
0
Readout of controllers software version
o08
Select signal for display view. 1=Suction pressure in degrees, Ts
2=Condensing pressure in degrees, Ts
o17
1
2
1
Pressure transmitter working range Ps - min. value
o20
-1 bar
5 bar
-1
Pressure transmitter working range Ps- max. value
o21
6 bar
200 bar
12
Refrigerant setting:
13=User defined. 19=R404A. 20=R407C 21=R407A. 37=R407F.
40=R448A. 41=R449A
*
o30
0
37
0
41
Input signal on DI2. Function:
0=not used,
1=External safety function. Regulate when closed,
2=external main switch,
3=Night operation when closed,
4=alarm function when closed,
5=alarm function when open,
6=on/off Status for monitoring
7=drive alarm
o37
0
7
0
Pressure transmitter working range Pc– min. value
o47
-1 bar
5 bar
0 bar
Pressure transmitter working range Pc – max. value
o48
6 bar
200 bar
32 bar
Setting of condensing unit type (is factory set when the controller
is mounted and cannot be subsequently changed)
*
o61
0
57
0
55 or 56 or 57*
The sensor input S3 is to be used to measure the discharge gas
temperature (1=yes)
o63
0
1
1
Replace the controllers factory settings with the present settings
o67
off
On
Off
Defines the use of the Taux sensor: 0=not used; 1=measuring of oil
temperature; 2=other optional use
o69
0
2
0
Period time for heating element in crankcase (ON + OFF period)
P45
30 s
255 s
240 s
Difference for heating elements 100% ON point
P46
-20 K
-5 K
-10 K
Difference for heating elements 100% OFF point
P47
5 K
20 K
10 K
Read-out of operating time for condenser unit. (Value must be
multiplied by 1,000). The value can be adjusted
P48
-
-
0 h
Read-out of compressor operating time. (Value must be multiplied
by 1,000). The value can be adjusted
P49
-
-
0 h
34
FRCC.PC.044.A6.02
Application Guidelines
