TC 90 series is the new large-screen LCD temperature controller, mainly used for room temperature control of the fan-coil systems in industrial, commercial, and civilian central air conditioning units. It controls the terminal fan-coil control valves to perform opening and closing according to room temperature changes detected by the temperature-sensing elements of their thermometers. In that way, the room temperature is adjusted to provide a comfortable and energy-saving indoor environment.
TC90 series LCD temperature controllers adopt microcomputer control technology withlarge-screen LCDs. Statuses displayed on the LCD screen: Working status (cooling, heating,andventilation), fan speed, room temperature, and set temperature. Keys: Power switch key (
),mode switch key (M), fan speed selection key (
), and temperature setting key (▲▼).
),mode switch key (M), fan speed selection key (), and temperature setting key (▲▼).Product Features
Basic Functions
Mode switching of cooling, heating, and ventilation.
Manually or automatically controlled three-speed switch of the fan.
Large-screen blue LCD backlight.
Power-off memory function.
Room temperature programming function, 4 periods per day.
Status Displayed on the Large-Screen LCD
Working mode (cooling 
, heating 
, and ventilation 
)
Fan speed (low speed 
, medium speed 
, high speed 
, or automation AUTO)
Motorized valve opening 
Room temperature display
Temperature display setting
Key Locking Function
The temperature controller is designed with the key locking function. It automatically locks the keys 30 seconds after the user stops operating it, restricting other people from operating the temperature controller.
Low-Temperature Protection Function
When room temperature is below 5℃, the closed temperature controller will turn on to warm up the room automatically and display the icon 
on the screen. The fan will operate at high speed automatically, and then turn on the motorized valve. The temperature controller will automatically turn off when room temperature rises to 7°C.
Temperature Adjustment
If the user wishes the temperature displayed on the temperature controller is higher or lower than the actual temperature (±5°C),
the following operations can be performed:
When the temperature controller is off, press "▲" and "▼" at the same time for 3 seconds, and then "XX°C" will be displayed on the screen (the working mode of the temperature controller is not displayed). Then press "▲" or "▼" to adjust the temperature value, which will be automatically confirmed 6 seconds after the adjustment.
Alarm Function
When the sensor fails, the temperature controller will turn off the fan and the motorized valve, and display "E1" or "E2" on the screen.
E1: Sensor short-circuit alarm
E2: Sensor open-circuit alarm
When temperature is higher than 55°C, "HI" will be displayed on the screen; when temperature is lower than 0°C, "LO" will be displayed on the screen.
Technical Parameters
Temperature-Sensing Element: NTC
Temperature Control Accuracy: ±1℃
Temperature Setting: 5~35℃
Display Range: 0~55℃
Working Environment: 0~45℃
Humidity: 5 ~ 95% RH (no condensation)
Key: Press the keys gently.
Self-Consumed Power: ＜1W
Power Supply Voltage: AC85~260V,50/60Hz
Terminal Block: Can be connected to 2 * 1.5 mm² or 1 * 2.5 mm² wires
Load Current: 2 A (resistive load), 1 A (inductive load)
Shell: Fire-retardant PC + ABS
Dimensions: 90 * 88 * 15.5 mm (width * height * thickness)
Hole Pitch In Installation: 60 mm (standard)
Ingress Protection: IP30
