Notes for Installation
1. Sensor leads must be kept separately from main voltage wires in order to avoid high frequency noise
induced. Separate the power supply of the loads from the power supply of the controller.
2. When installation the sensor shall be placed with the head upward and the wire downward; The evaporator
sensor must be installed between the fins of the evaporator in the area, where probably the ice is the
thickest. Don't place the evaporator sensor near the electric heater.
3. The temperature controller can not be installed in the area with water drops.
8. Lock parameters
In normal operating,press
button and hold for 10 seconds to lock the parameters if
OFF
displayed
(No
odification is allowed),or to unlock if ON is displayed. Parameter can be displayed only and can not
be modified if locked, but the adjustment of the set temp. is still active.(the factory default is ON
)
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is
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Function details
1. Temperature control
After the delay time,the compressor starts operating when cold room temperature
(set temp.+ Hysteresis),
and will be off when cold-room temperature
set temp.
To protect the compressor, it can re-start unless the time when the compressor stops every time is longer
than the delay time (Parameter E4).
2. Defrosting Functions
Electric heating defrost: The defrost LED and the heater turns on,
Hot gas defrost : The defrost LED and valve will turn on . When
the
stops. A
valve will turn off , compressor will restart-up,
Enter the defrost status: It defrosts and heats only if the temp. of the evap. sensor is less than the defrost
termination temperature (Parameter F3).
Exit the defrost status: When the temperature of the
Sensor is over the defrost termination temp.
or the defrost duration end ,it will exit the defrost status.
When the duration of defrost is se tot 00 , the function of automatic defrost will be cancelled.
3. Display during defrost
When setting the parameter F4=1, the room temperature is locked during defrost, and the last value before
defrost is displayed. When defrost ends, normal display will be resumed after 20 minutes delay of room
temperature display (or set temp.is reached). The defrost LED flashes during the delay.
4.
5. Abnormal work mode
When room sensor is short-circuited or overheated (more than
/
) HH is displayed; When room
sensor is open-circuiedt or
too low (less than
/
) LL is displayed. At that time
the compressor operates automatically by the cycle of 45 minutes on and 15 minutes off.
When evap. sensor fails or over the displayed range, the defrost termination will be just controlled by the
defrost duration. (Parameter F1)
6. Circuit Diagram
≥
≤
—
）
the compressor stops. The heater will be
disconnected after the defrost duration ends.After two minutes dripping time , it will exit the defrost status
and start the compressor. After two minutes delay time the evaporation fan will run.
the defrost duration ends,
compressor
fter two minutes delay the
after two minute the fan
will run.
evap.
set temp.
set temp.
120
temperature is
4
0
"
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The alarm function
When the power is on and after the compressor turns off , the alarm function is set.
When the cold-room temperature is higher than (
+ C2) or lower than (
C3
, it will
alarm after the delay time(E4) and the display will flash. The buzzer will sound. The sound can be cancelled
by pressing random key.
℉
℉
－
45
5
4
℃
℃ —
Accessories for the temperature controller
1. One attached transformer
2. Two temperature sensors
3. One installation stand
4. One cover panel and 1
3
10mm screw
φ ×
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