Elitech STC-9100 Double Sensor Temperature Thermostat User Guide

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STC-9100 defrosting temperature controller controls three loads: the refrigeration device, the defrosting unit, and the External Alarm.

Please learn that the room temperature was supposed to keep at the range from “F1” to “F1 + F2”
”

You can set them in both the user interface and the Admin Interface. Below is the 2nd method.

Step 1: Enter the Admin Interface: hold the [SET] key and the [ ] key at the same time for 10s; you will see the code “F1” (““).

Step 2: Press the [SET] key to check current value, and press the key or the key to change the F1 value;
Step 3: Press the [SET] key to save the new data, and back to the menu list, you will see the code “F1” (““) again.

Step 4: Switch to the “F2” (“HY”) code by press the key.
Repeat the above 2-4 steps to update all the code you want to.Repeat the above 2-4 steps to update all the code you
want to.

At last: Just leave the unit alone; it will auto quit from setting mode back to normal status in 10s.

F5 (AC): Delay Time for the Compressor and Delay time for defrosting if it was Hot Gas mode
If you found the “F1” value cannot be modified to the value you need, please adjust the F3 and F4 (the US and the L5), which are the limitation for F1

This unit controls the defrosting by Time and Temperature.

Temperature Condition: the evaporation sensor temperature is lower than the preset “defrosting Stop temperature” F8 (dte), which is a significant value to prevent over defrost.
Time Condition 1: the real-time passes the preset interval time F6 (i d f), a regular parameter for almost all defrosting thermostats.

Time Condition 2: If the “defrosting method” you take is the hot gas from the compressor reverse rotary when
it will count the compressor’s last stops moment plus F5 (ac), which is a protective value to avoid the compressor frequently startup and stops.

The operates method is just like page 1 shows;

Defrosting Mode:
- Electric-Heating.
- Hot Gas from the compressor.
Count mode of defrost cycle:
- Cumulative time from the controller power on.
- Cumulative time of the compressor working.

Display mode when defrosting:
- Shows the room sensor temperature display.
- Shows the evaporator sensor temp. (continue showing 10 minutes once defrosting over)