What interface does AE-669 use for Fujitsu General projects?
The verified route uses the indoor-unit CN14 connector with X, Y, A1 and B1 terminals.
VRF Thermostat
AE-669 is the primary ACMELEC thermostat route for supported Fujitsu General and O General indoor units with the CN14 control-board interface.
Model-specific information
This section explains why a buyer would choose this model instead of only seeing a generic VRF thermostat introduction.
Black LCD VRF thermostat projects that need a simple, cost-effective smart panel route.
Black LCD curved-screen panel with clean numeric display, suitable for practical VRF control upgrades.
Works as a shared AE VRF thermostat body; brand-specific wiring and firmware matching must be confirmed before order.
Good for customers who want a simpler LCD display instead of a full color TFT screen.
Shared model details
The product appearance, functions and main documents are shared by compatible VRF brands. Each brand page only carries the wiring diagram and compatibility notes that actually change.
| Temperature sensing element | Thermistor |
|---|---|
| Control accuracy | ±1°C |
| Installation hole spacing | 60mm (standard) |
| Work environment | 0-45°C |
| Shell material | PC+ABS flame retardant |
| Temperature range | 16-32°C (adjustable) |
| Shared model | AE-669-VRF |
|---|---|
| Display / panel | Black LCD curved-screen panel |
| Product form | Wall-mounted smart VRF thermostat |
| Smart options | WiFi, Zigbee, Tuya |
| Supported brand route | Daikin, Mitsubishi Electric, Fujitsu General, Toshiba, Hitachi, Carrier, YORK, Hisense, Midea, GREE, Haier, LG, Mitsubishi Heavy Industries |
| Brand-specific part | Wiring diagram, firmware matching and indoor unit compatibility |
| OEM/ODM scope | Logo, panel, firmware, packaging and manual language by project |
Professional detail
AE-669-VRF LCD Smart VRF Thermostat is a shared AE model page for VRF or multi-split air conditioner control projects. The same product body can be matched to different supported AC brands, while the wiring diagram, firmware and compatibility notes are confirmed on each brand page.
Shared AE thermostat body for multiple VRF brands; brand pages handle wiring and firmware matching.
Confirm indoor unit model, interface generation and current controller wiring before sample or bulk order.
Specify the required wireless protocol and confirm Tuya app or gateway requirements for the ordered version.
Choose the AE appearance/model first, then confirm the AC brand wiring and firmware route.
Product overview
AE-669-VRF LCD Smart VRF Thermostat is a shared AE model page for VRF or multi-split air conditioner control projects. The same product body can be matched to different supported AC brands, while the wiring diagram, firmware and compatibility notes are confirmed on each brand page.
This model belongs to the VRF Thermostat family. Confirm the exact HVAC model, wiring interface and required control configuration before requesting a quotation.
Application details
To speed up quotation, include HVAC brand/model, protocol requirement, order quantity, target market, logo needs and certification requirements.
A model-matched manual is not confirmed here. Request the manual and wiring diagram for the exact ordered version before installation.
Function details
Confirm which control functions are included in the ordered configuration. Do not assume that every protocol or feature is available on every version.
Confirm the exact indoor-unit model, interface and matched controller configuration
WiFi, Zigbee, Tuya control options according to the selected configuration
Remote app control and smart scene integration where supported
OEM panel, logo and documentation support for HVAC customers
Technical checklist
Exact configuration depends on project requirement, so ACMELEC confirms the real HVAC system before quotation and sample preparation.
Specification summary
| Model | AE-669-VRF |
|---|---|
| Product family | VRF Thermostat |
| Application | VRF air conditioner control |
| Protocol / function options | WiFi, Zigbee, Tuya |
| Compatible system | Daikin, Mitsubishi Electric, Fujitsu General, Toshiba, Hitachi, Carrier, YORK, Hisense, Midea, GREE, Haier, LG, Mitsubishi Heavy Industries |
| OEM/ODM | Logo, panel, firmware, packaging and manual support available by project |
| Documents | English manual or technical file can be supplied when available |
| Buyer type | HVAC distributors, brand owners, system integrators and project buyers |
| Compatible air conditioner brand | Daikin, Mitsubishi Electric, Fujitsu General, Toshiba, Hitachi, Carrier, YORK, Hisense, Midea, GREE, Haier, LG, Mitsubishi Heavy Industries |
| Control direction | VRF / multi-split indoor unit smart control |
| Smart function options | WiFi, Zigbee, Tuya |
| Typical project | Hotel rooms, apartments, offices and commercial HVAC retrofit |
| Buyer confirmation | Indoor unit model, wiring/interface, protocol and target quantity |
Fujitsu General CN14 installation

The illustrated route uses the indoor-unit control board without a separate gateway or power supply. Confirm the exact indoor-unit model and connector before ordering.
Verified product answers
The verified route uses the indoor-unit CN14 connector with X, Y, A1 and B1 terminals.
No. Compatibility depends on the exact indoor-unit model and control-board interface. Confirm both before ordering.
No. The illustrated CN14 route connects to the indoor-unit control board without a separate gateway or power supply.
Explore the range
VRF Thermostat
AE-5507-VRF smart thermostat for VRF air conditioner systems with WiFi, Zigbee, Tuya app and voice assistant control. Brand-specific wiring and firmware are confirmed by project.
VRF Thermostat
AE-5503-VRF WiFi smart thermostat for VRF air conditioner systems with app control, voice assistant support and OEM project supply. Brand-specific wiring and firmware are confirmed by project.
VRF Thermostat
AE-5502-VRF smart thermostat for VRF air conditioner control. TFT color LCD panel option for VRF air conditioner smart control. Brand-specific wiring and compatibility are confirmed on each VRF brand page.
Samples, MOQ and lead time