GY-HL2003 series temperature controller adopts independent microcomputer processing and is equipped with LCD display. The temperature controller is designed to control the fan, valve, air valve or electric heater in the fan coil unit (FCU) and heat supply unit. This model can control the heating/cooling/ventilation of double pipe or four pipe FCU.
The GY-HL2003 series thermostat uses an independent micro‑processor and an LCD display to control fan‑coil units (FCU) and heating/cooling equipment. It can manage ON/OFF operation and fan speed for single‑ or four‑pipe FCUs, with selectable voltage inputs of 120 V or 230 V.
The manual details wiring procedures, installation steps, environmental limits, and safety precautions. It specifies power requirements, maximum loads, dimensions, and required accessories, and emphasizes that only qualified personnel should perform the wiring and installation. This manual is written in Chinese.
| Sensor type | NTC thermistor |
|---|---|
| Power supply | 220 V (or any other voltage) ±15%, 50/60 Hz |
| Self‑consumption power | Maximum 2 W |
| Relative humidity range | 5 % RH to 95 % RH (non‑condensing) |
| Maximum FCU load | 150 W |
| Maximum heating device load | 2.5 kW |
| Dimensions (full size) | W 86 mm × H 86 mm × D 13 mm |
| Mounting hole spacing | 60 mm |
| Enclosure material | Flame‑retardant PCAABS |
| LCD display size | 53 mm × 36 mm |
| Accessories supplied | Two M4 × 25 mm screws |
It can operate on 220 V or any other voltage within a ±15 % tolerance, at 50 Hz or 60 Hz.
Before wiring, disconnect the power, use single‑core cable, connect to the screw terminals, and ensure proper insulation to avoid electric shock.
It can control up to 150 W for fan coil units and up to 2.5 kW for heating equipment.