3
F36
Defrost stop mode
0 or 1
1
-
0:only controlled by time
1:controlled by both time and
temp
F37
Defrost heat mode
0 or 1
0
-
0: electric heat 1: hot gas
F50
External alarm mode
0 -- 4
0
-
0: without external alarm
1: always open, unlocked
2: always open, locked
3: always closed, unlocked
4: always closed, locked
Alarm
F59
Whether use the evaporator
sensor error alarm
YES / NO
YES
-
F80 Password
OFF
0001 -- 9999
OFF -
OFF means no password
0000 means clearing password
System
setting
F81 Temperature
unit
C/F
C
-
C:
Centigrade
F: Fahrenheit
F98 Reserved
Testing
F99 Test
self
This function can attract all relays in turn, and please don’t use it
when the controller is running!
End
Exit
7
Basic Operating Principle
Temperature controlling
The controller has 2 temperature controlling mode: Refrigeration and Heat(F29).Temperature
controlling point is controlled by “setting temperature (F11, or press the “set” key for some time to set)”
and “temperature difference(F12)”.In refrigeration mode, the controller begins to refrigerate when the
temperature of the temperature sensor is over “setting temperature
＋
temperature difference”, and it stops
refrigerating when the temperature is under “setting temperature
－
temperature difference”; In heat mode,
the controller begins to heat when the temperature of the temperature sensor is under “setting temperature
－
temperature difference”, and it stops heating when the temperature is over “setting temperature
＋
temperature difference”
Compressor delay time
The compressor delay time is set by F21, for example, 3 minutes. The controller contains a
“compressor halt calculagraph”, and it begins to time when compressor stops, the program first check the
calculagraph before booting the compressor next time, the program will immediately boot the compressor
if the calculagraph reach 3 minutes ,if the calculagraph doesn’t reach 3 minutes ,it will boot again when the
calculagraph reaches 3 minutes. Thus you can ensure that the boot alternation is over 3 minutes after halt,
so it can prevent to breaking the compressor as a result of frequent boot. In addition, the controller doesn’t
boot the compressor within 3 minutes after turning on the power supply, thus the compressor can also be
protected in the state of power cut and then power on.
Auto defrosting principle
The controller has 3 defrost start modes which can be selected
（
F35
）
:
OFF: Defrost is off.
1. Time alternation: the controller will start defrost according to the setting alternation time which can
be set in “Defrost alternation time (F31)”.
2. Accumulative compressor running time: if compressor accumulative running time reaches the time
which set in “defrost alternation time (F31)”, the controller starts defrost.
The controller has 2 defrost end modes which can be selected
（
F36
）
:
0: time control: the defrost time can be set by F33, the controller will stop defrosting when it reaches
the defrost time.
1: controlled by both time and temperature: the controller will check the defrost effect through
evaporator sensor after starting defrost, If the sensor temperature reaches the “Defrost end temperature
(F32)”, the controller will turn off defrosting, if the defrost time is longer than “defrost end time (F33)”,
the defrosting will be turned off forcibly.
You can select 2 defrost heat modes (F37):
0: electric heat: the compressor stops and the defrost output is turned on (the defrost output controls
the electric heater);
1: hot gas: the compressor and defrost output is turned on (the defrost output controls the valve).
Dripping
A dripping time can be set (F34). For example, set the dripping water with 5 minutes, after finishing
