TOL43-AC LCD Screen Thermostat

I. Product Summary

TOL43-AC Series thermostats are designed to control the fans and valves in air conditioner applications by comparing the room temperature and the setting temperature to achieve comfort and energy saving.

II. Technical Parameter

III. Main Functions and Characteristics

• Square LCD display for clear visibility.
• Choice of blue or white backlight.
• Supports either two-pipe or four-pipe systems.
• Features 3 fan speeds plus an auto mode.
• Includes a timer switch function with 4 period settings.
• Compatible with selectable 80mmx80mm hidden boxes.
• Offers room temperature calibration.
• Provides precise comfort control, maintaining temperature within 1°C of the set level.

IV. User Interface Explanation

The thermostat display shows current settings and status. Key elements include:

• Timer off setting 1
• Timer on setting 1
• Timer on setting 2
• Timer off setting 2
• Cooling mode indicator
• Heating mode indicator
• Room Temperature display
• Set Temperature display
• Week indicator
• Valve on indicator
• Current time display (e.g., 0:00)
• Current temperature display (e.g., 28°C)
• Set temperature display (e.g., 22°C)
• Fan speed indicator
• Mode selection indicator
• Up button [▲]
• Down button [▼]
• Power on/off button [Power]

V. Model Definition

• AC 2: Two-pipe system, for air conditioning.
• AC 4: Four-pipe system, for air conditioning.

For example: TOL43-AC2

VI. Model Specification

VII. Wiring Diagram

Two wiring diagrams are provided for AC230V 50/60HZ systems:

2-pipe system: Shows connections for terminals L, N, Hi, Low, Val 1, Mid, NO, NC, and numbered terminals 1 through 9.

4-pipe system: Shows connections for terminals L, N, Hi, Low, Val 1, Val 2, Mid, NO, NC, and numbered terminals 1 through 9.

VIII. Operation Instruction

1. Setting Power on/off: Press the [Power Button] to turn the device on or off.
2. Setting Temperature: Press the [Up Button] [▲] or [Down Button] [▼] to set the desired temperature. The factory default is 26°C.
3. Setting the System Mode: Press the [Mode Button] [M] to select heating, cooling, or ventilation. The factory default is ventilation.
4. Setting the Fan Speed: Press the [Fan Button] to select the fan speed. Options are [Low Speed] (factory default), [Mid Speed], [High Speed], and [Auto Speed]. In auto mode, the fan speed adjusts based on the comparison between room temperature and set temperature.
5. Setting the Day Program Schedules:
   • Press and hold the [Mode Button] [M] for 3 seconds. The hour (hh) will flash. Press [Up Button] [▲] to adjust the hour.
   • Press [Mode Button] [M]. The minute (mm) will flash. Press [Up Button] [▲] to adjust the minute. This sets the real time.
   • Press [Mode Button] [M]. The week indicator (e.g., '1' for Monday) will flash. Press [Up Button] [▲] to adjust the day of the week (1-7).
   • Press [Mode Button] [M]. Period 1 and its hour (hh) will flash. Press [Up Button] [▲] to adjust the hour.
   • Press [Mode Button] [M]. Period 1 and its minute (mm) will flash. Press [Up Button] [▲] to adjust the minute. Press [Set Button] [S] to confirm.
   • Repeat the process for Period 2, Period 3, and Period 4.
   • After setting Period 4, the screen will display "Loop", indicating the programmable setting is finished for the day.
6. Setting the Regular Boot:
   • Press and hold the [Mode Button] [M] for more than 3 seconds. After setting the time, press the [Set Button] [S] until the hour (hh) blinks. Press the [Up Button] [▲] to adjust the hours.
   • Press the [Mode Button] [M] until the minute (mm) blinks. Press the [Up Button] [▲] to adjust the minutes.
   • Press the [Set Button] [S] to confirm. The blinking stops, and the regular boot setup is complete.
   • To cancel regular boot, press [Mode Button] [M] to enter the regular boot state, then press the [Set Button] [S]. The icon will blink, indicating cancellation.
7. Setting the Off Timer:
   • After setting the regular boot, press the [Mode Button] [M] again until the hour (hh) blinks. Press the [Up Button] [▲] to adjust the hours.
   • Press the [Mode Button] [M] until the minute (mm) blinks. Press the [Up Button] [▲] to adjust the minutes.
   • Press the [Set Button] [S] to confirm. The blinking stops, and the off timer setup is complete.
   • To cancel the off timer, press [Mode Button] [M] to enter the off timer state, then press the [Set Button] [S]. The icon will blink, indicating cancellation.
   • Settings for the third and fourth periods follow the same procedure as the first and second periods. The icons represent [Timer On], [Timer Off], [Home In], and [Home Out].
8. Setting the Circulation of Timer Switch:
   • After setting the timer switch time, press the [Mode Button] [M]. The screen will display "Loop".
   • Press the [Up Button] [▲]. The week display area will show the day of the week, or options like "12345", "123456", or "1234567".
   • If only the day of the week is displayed, the timer switch setting is valid only for that day.
   • "12345" means the timer switch is valid from Monday to Friday, and invalid on Saturday and Sunday.
   • "123456" means the timer switch is valid from Monday to Saturday, and invalid on Sunday.
   • "1234567" means the timer switch is valid every day.
9. Advanced Setting Mode:
   • Temperature Adjustment: (Use only if the room temperature differs from the actual temperature.) In power-on status, press and hold the [Set Button] [S] for about 7 seconds. "XX X" will display on the bottom of the screen (e.g., "26 5" means 26.5°C). Press the [Up Button] [▲] or [Down Button] [▼] to modify the temperature. The setting confirms automatically after 7 seconds of blinking.
   • Fan Coil Controlling Mode Setting (Only for 2-pipe systems): (Allows selection of fan coil control: 'In control' or 'Out of control'.) In power-on status, press and hold the [Set Button] [S] for about 7 seconds. "XX X" will display. Continue pressing [Set Button] [S] until "F00" or "F01" is displayed. Press the [Up Button] [▲] to choose between "F00" and "F01".
   • In "F00" mode, the fan coil stops working when the room temperature reaches the set temperature.
   • In "F01" mode, the fan coil continues working when the room temperature reaches the set temperature.

IX. Installation Instruction

This product is suitable for a standard 80x80mm wall box.

1. Connect the power and valve lines to the terminals. Fix the wall plate into the wall box using a screwdriver.
2. Connect the wires to the LCD board.
3. Connect the LCD board to the wall plate.

NOTICE: The installation wire should be 1.5-2.5mm².

Warning: ⚠️ The symbol indicates that the unit is being installed. It may cause electrical shock hazard during maintenance. Ensure installation is performed by a professional technical worker. [CE Certified]

X. ATT

Thank you for purchasing this product!

Please read this manual for complete instructions on installing and operating your thermostat. If you require further assistance, please feel free to contact BEOK CONTROLS.

In the box you will find:

Our Service:

BEOK CONTROLS offers a warranty of 24 months from the sales date. During the warranty period, if the issue is due to quality, BEOK CONTROLS will fix or replace the product free of charge after testing. For issues not related to quality or outside the warranty period, a service fee will apply.