Warnings:
If you have any questions or problems concerning the electronic
temperature or humidity controller made by us, please contact our
distributors and we will provide you high-quality after-sale services.
Failure Causes Precautions
No display when
power is on.
check to see if the power is shorted circuit or the
thermostat is failed.
Check power supply and change fuse.
Check if there is 220V power input or change
thermostat with our distributor.
Display but machine
does not work
The setting temperature is higher than the current
temperature.
The heat protector is open circuit because the
pressure is over loads.
The heat protector within compressor is open
circuit.
Reset the necessary controlling temperature.
Check the reasons for overload and overheating.
After the trouble is solved, restart to work.
Defrost is not completed
The defrosting time is too short.
The temperature of defrosting withdrawal is
too low.
Reset defrosting time.
Increase temperature for defrosting withdrawal.
Defrosting does not work
Defrosting sensor is not correctly installed.
Defroster has burned out.
The wiring or device for controlling defroster failed
The temperature for defrosting withdrawal is lower
than that in cold storage house.
Check installation by the diagram.
Change defroster.
Check wiring or device.
Reset temperature for defrosting withdrawal.
Displayed temperature
is unstable or there exists
misplay
The sensor wiring is interfered, poorly contacted
or is tied with other cables. The circuit is damaged. Separate sensor wiring with power cables or change
shielded lines or check if the contact is tight or not.
Real temperature is much
difference to thermostat
display.
The locations for the sensors are not correct or sensor
wiring is too long and its resistance is too big. The
wiring contact is poor and the sensor is damaged.
All sensors should be corrected at their locations.
Enlarge the cross section of the expanded wires.
Make sure the wiring sealing, water-proof or Moisture-proof
of performance is good. Change sensor.
Machine does not stop
as soon as the temperature
reaches
The sensor is not correctly installed and cannot
measure the correct temperature. The contactor
of compressor failed.
Check if the sensor has accurately measured
the temperature or not. Change compressor contactor.
Cooler works with
over-frequency
Return difference value is too small or
the setting for pressure protection is incorrect.
Reset and enlarge the temperature value of return
difference. Adjust setting for pressure protection.
“E1”、“E 2” is displayed The sensor circuit is opened or shorted. Check to see if the sensor wiring has good contact with
coupling end or not.
Trouble shooting
Guangzhou Eliweli Automatic Control
Technology. Co., Ltd.
Feature Descriptions：
Cooling: When the current temperature ≥ setting tempera-
ture + temperature hysteresis (D) and delay the setting of the
"delay time" , (The load relay is on) compressor starts,run-
ning indicator lights on, thermostat indicator light off.
Cooling Stop: When the current temperature ≤ the setting te-
mperature, the cooling relay is off; the running indicator is off;
thermostat indicator lights on.
Note: When you press Heat key, if defrost sensor temperature
≥exit defrost temperature, the system can not enter defrost sta-
ge, to keep the current state.
Defrost Star：
When the instrument after defrost ( or boot) to run a set
"running cycle" and defrost sensor temperature < exit temperature
defrost, then into defrost. The defrost indicator is on; thermostat
indicator lights off. Cooling relay off, running lights off.
Defrost Stop：
1.When defrost sensor temperature≥
or got to the setting of “defrosting time”, defrost (Default
2 minutes defrost dripping time after defrost ). The defrost in-
dicator is off. Thermostat indicator lights on. Controller will
return back to the normal control status. Then beginning of the
next defrost cycle time is running.
exit defrost temperature
exit
3. This product has been inspected rigidly before dispatch. We
provide one-year warranty against any quality problem (of the
product itself). This warranty will be void in case of any damage
resulted from unauthorized dismantling of the product.
2. Keep this product away from moist, corrosive air and high
magnetic field. Otherwise normal operation of this product would
be affected.
1. Please read the product instruction carefully and connect the
input/output lines of power supply and sensors to corresponding
terminals according to the wiring diagram. Tighten all connecting
terminals and screws and make sure all wiring is correct before
power-on. Otherwise, wrong wiring would affect performance and
control of the system, or even lead to damage or burnout of tempe-
rature control chip.
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