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
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