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Elitech STC-1000 User Manual page 2

Heating and refrigeration auto switch controller

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4.4. Wiring Diagram
A.
Need not to distinguish + or - when wiring the NTC sensor's cable or the Input power.
Wiring the 5 to the live wire and terminal 6 to a heater, or the opposite.
Wiring the 7 to the live wire and terminal 8 to a refrigerator, or opposite.
The heating and cooling mode will switch automatically.
Load Voltage ∗ Max Current of Relay
B.
The input voltage must be within the voltage value marked in the diagram ±10% value.
Power Factor
Load Wattage ≤
C.
The factor for Inductive Load like compressor, motor, heating pump, usually be 5~8;
The factor for Resistive Load like Electric heating rod, Electric blanket usually is
1.5~2.
The factor for Incandescent lamps is usually nearly 15.
5.
Configurations
5.1. Code and Function Menu
Hold the
button for 3s to enter the menu list .
Code Function
F1
Temperature Setpoint
F2
Temperature Hysteresis / Return Difference
F3
Protection Delay Time for Refrigerator
F4
Temperature Calibration
F1: Temperature Setpoint
It is the room temperature value users wish to keep around.
F2: Temperature Hysteresis / Return Difference Value
A.
Switch to heating mode once found
Measured Temperature ≤ Temp Set-point – Return Difference
B.
Switch to Refrigeration mode once found
Measured Temperature ≥ Temp Set-point + Return Difference
But the compressor will not start up until the compressor's delay time is over.
Haswill Electronics
Min Max Default Unit
-50.0 99.9
10.0
°C
0.3 10.0
0.5
°C
1
10
3 Min
-10.0 10.0
0 Hour
2 / 2
F3: Compressor Delay Time: The purpose of this value is to protect the compressor.
F4: Temperature Calibration
F4 = Real Temperature – Measured Temperature
5.2. How to Set Parameters?
for 3s to enter the menu list; the display shows the code F1
Step1: Hold the
Step2: Press the
or
to select the code you want to update;
Step3: Press the
to check the current value.
Hold the
and press
Step4: Release keys to back to function menu list.
Repeat operation from Step 2 / 3 / 4 to adjust other parameters;
Step5: After configuring all values, remember to press the
normal monitor status, the display shows the room sensor temperature.
The modified value will be discarded and back to normal status if without operation
in 8 seconds.
5.3. When Will is the Load Works/Stops?
Loads
Startup Condition
Room Temp ≥ F1 + F2 and
Refrigeration
The instant period passed the delay time (F3)
Room Temp ≤ F1 - F2
Heating
Room Temp: Measured temperature value by the controller's sensor.
F2: Return difference Hysteresis.
The instant period is counts from load stops last moment to the instant time;
In other words, the time should be later than the compressor's last stops moment + delay
time.
6.
Error & Solution
When an alarm occurred, the buzzer scream "di-di-di," press any key to stop screaming; but the
error code on display will not disappear until all the failures are resolved
Code Reason
E1
The memory unit broken Press/key to restoring the default data or get factory reset.
EE
Sensor error
HH
Room temp. > 99.9°C
Copyright Haswill-Haswell All Rights Reserved
or
key to change the value;
for saving data, and back to
Stop Condition
Room Temp ≤ F1
Room Temp ≥ F1
Troubleshooting
Ensure the sensor was installed firmly or replace a new
sensor, display back to normal in 10 seconds once the
problem is fixed.
Check the room temperature and all loads, then stop the loads
from working manually if necessary.
Haswill Electronics
https://www.thermo-hygro.com

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