Technical data
Instructions Manual cod. 1592001120
1592001121 Universal-R3 GB 19.11.2004.doc
rel. 1.0
Pa. 12 / 15
11. OTHER FEATURES OF THE UNIVERSAL-R
11.1
LED’S
As well as the main digital display, there are some small LED’s with
symbols on the front panel. These are used to monitor the loads
controlled by the instrument. Each LED’s function is described in the
following table.
LED
MODE
Function
ON
Cooling enabled
FLASHING
Anti-short cycle delay in progress
ON
Fan enabled
&
FLASHING
You are in programming mode
ON
Defrost in progress
FLASHING
Drip time in progress
ON
Thermostat override enabled
Alarm
ON
ALARM signal, or :- When in programming mode, in Pr2, if this lights up, it
indicates that parameter is also accessible without security code, in the first level
12. THERMOSTAT OVERRIDE ( not available when parameter “tC” = 1 or 6 )
For rapid chilling or freezing, the thermostat can be overridden by pressing the button until the LED under the
symbol lights up. The compressor will run in continuous mode, irrespective of temperature, for the time period set in
parameter “CCt”. Normal operation will then resume automatically. The cycle can also be terminated manually by
pressing the
button again for about 3 seconds.
13. DEFROST TYPES
Parameter “tC” = 1 or 6 No defrost
Parameter “tC” = 2 Off cycle defrost by timer
Parameter “tC” = 3, 4 or 5 Forced defrost, Electrical or Hot Gas
Parameter “tdF” = 0 defrost is electrical – “tdF” = 1 defrost is by hot gas
14. EVAPORATOR FAN CONTROL ( only when parameter “tC” = 5 )
The fan control mode is selected by means of the “FnC” parameter:
FnC=0 fans will cycle ON and OFF with the compressor and be off during defrost:;
FnC=1 fans will run continuously, but be off during defrost
FnC=2 fans will switch ON and OFF with the compressor and be on during defrost *
FnC=3 fans will run continuously and be on during defrost *
* Note : Fans will stop if the temperature in parameter FSt is exceeded.
Parameter “FSt” sets the fan stop temperature. This is the maximum temperature, detected by the evaporator probe,
above which the evaporator fans will stop.
Leave “FSt” above ambient during commissioning to avoid fan short cycle.
After defrost, there is a stand still drain time, set by parameter “Fdt” When this period has expired, the refrigeration
cycle commence but the evaporator fans remain off until “Fnd” ( fan delay ) times out.