Supplied from China
ACMELEC manufactures and supplies HVAC controls from Nanjing, China, for distributors, installers and OEM/ODM projects.
FCU Thermostat
AE-5503K WiFi Fan Coil Thermostat
Selection facts and configuration limits
Touch thermostat for 2-pipe and 4-pipe fan coil systems. Choose three-speed relay or 0-10V fan control, on/off valve outputs and an optional Smart Life WiFi version for hotels, offices and residential projects.
- Model
- AE-5503K
- Application
- Fan coil unit HVAC control
- FCU systems
- 2-pipe / 4-pipe
- Compatible brand
- ACMELEC
- Product family
- FCU Thermostat
The standard 5503K and 5509K versions are rated 5A. Photos with a 3A label are wiring-layout references for another hardware version, not the rating label of the standard 5A product. Select the diagram for the ordered pipe, valve and fan configuration, and follow the terminal label supplied with the unit.
Product selection summary
AE-5503K selection facts
| Control application | 2-pipe or 4-pipe fan coil system; match valve wiring and fan output to the ordered version. |
|---|---|
| Standard rating | 5 A. The 3 A-labelled photographs are wiring-layout references for another hardware version. |
| Fan and smart options | Three-speed relay or 0–10 V fan version; specify the optional Smart Life WiFi version separately. |
Factory supply · B2B
Catalogues, samples & wholesale quotations
Standard MOQ: 60 units/sets
Models, protocols and software versions may be counted separately. Pricing and production lead time depend on the confirmed configuration and quantity.
Sample options
After requirements and payment are confirmed: stock samples approximately 3 working days; functional/protocol configuration 15–20 working days; logo, manual or packaging adjustments approximately 10 working days.
Confirm your application before ordering
Specify 2-pipe or 4-pipe system, valve voltage and wiring, fan speed or 0–10V control, and required protocol. Confirm the configuration against the model wiring diagram.
Configuration and document reference
AE-5503K FCU outputs and configuration reference
Select the FCU pipe arrangement, valve wiring and fan output before choosing the ordered version. The standard AE-5503K is rated 5 A; the 3 A-labelled photographs illustrate another hardware version and do not replace the supplied unit rating label.
Product parameters
| Temperature sensor | Thermistor |
|---|---|
| Control accuracy | ±1°C |
| Setpoint range | 5-35°C, adjustable |
| Power supply | 110-230VAC, 50/60Hz |
| Rated load | 5A |
| FCU application | 2-pipe or 4-pipe system by wiring configuration |
| Fan control | High / medium / low three-speed fan or 0-10V fan version |
| Valve control | Heating and cooling on/off valve outputs according to configuration |
| WiFi option | Smart Life app and supported voice control |
| Installation | 60 mm standard mounting-hole spacing |
| Surface | Tempered glass front, PC housing |
Model and selection information
| Model | AE-5503K / AE-5503K-WIFI |
|---|---|
| Product form | Wall-mounted touch FCU thermostat |
| Operating modes | Cooling, heating and ventilation according to system configuration |
| Fan speeds | High, medium, low and automatic |
| Scheduling | Manual / programmable mode and single on/off timer |
| Project confirmation | Confirm 2-pipe or 4-pipe, valve outputs, fan type and WiFi requirement |
Documents and project notes
- Match the ordered pipe, valve and fan configuration to its terminal diagram; a similar front panel does not establish the output version.
- Do not select only by front panel. Confirm the actual 2-pipe/4-pipe and output requirement before quotation.
- For hotel or office projects, provide wiring photos, room quantity and preferred communication route.
fan coil unit display and operation
- Room and set temperature display
- Cooling, heating and ventilation operation
- High, medium, low and automatic fan speed
- Three-speed relay or 0-10V fan version
- Optional Smart Life WiFi app control
- Child lock, timer and programmable operation
Product overview
AE-5503K product detail
AE-5503K FCU Smart Thermostat is used for fan coil unit room control in hotels, offices, apartments and commercial HVAC projects. It supports FCU buyers who need clear model selection by output type, protocol and control requirement.
This model belongs to the FCU Thermostat family. Confirm the exact HVAC model, wiring interface and required control configuration before requesting a quotation.
Application details
Where this model is used
- 2-pipe or 4-pipe fan coil unit room thermostat projects
- Hotel, office, apartment and commercial HVAC room control
- 0-10V, on/off valve or fan-speed control projects where applicable
- OEM thermostat programs for FCU equipment suppliers and distributors
Recommended inquiry details
To speed up quotation, include HVAC brand/model, protocol requirement, order quantity, target market, logo needs and certification requirements.
Open English manualFunction details
FCU control functions
Select the wiring version according to the actual pipe, valve and fan configuration.
2-pipe or 4-pipe
Supports common fan coil heating and cooling configurations by model wiring.
Fan output choices
Choose high/medium/low relay control or the 0-10V fan version.
Smart Life option
The WiFi version supports remote app operation and compatible voice-control services.
Project matching
Confirm valve wiring, fan output and power supply before ordering samples.
Technical checklist
Key points to confirm before order
Exact configuration depends on project requirement, so ACMELEC confirms the real HVAC system before quotation and sample preparation.
- Confirm 2-pipe or 4-pipe system before selecting the model.
- Confirm valve output, fan speed control and power supply requirements.
- If 0-10V control is needed, mention it clearly in the inquiry.
- For hotel projects, confirm room quantity and preferred panel style.
Specification summary
Model information
| Model | AE-5503K / AE-5503K-WIFI |
|---|---|
| Product family | FCU Thermostat |
| HVAC system | 2-pipe / 4-pipe fan coil unit |
| Power supply | 110-230VAC, 50/60Hz |
| Rated load | 5A |
| Setpoint range | 5-35°C |
| Accuracy | ±1°C |
| Fan options | Three-speed relay or 0-10V version |
| Smart option | Smart Life WiFi version |
| Common projects | Hotels, offices, apartments, schools and hospitals |
| Selection points | 2-pipe/4-pipe, valve type, fan output and WiFi requirement |
OEM/ODM options
- Logo printing and front panel appearance direction
- Packaging, label and English manual support
- Firmware or function configuration discussion by project
- Sample verification before bulk order
Verified product answers
AE-5503K FCU questions
How is the AE-5503K wiring version selected?
Confirm the 2-pipe or 4-pipe system, valve wiring and whether the fan uses three-speed relays or a 0–10 V signal.
What power supply does AE-5503K use?
The listed FCU version uses 110–230 VAC at 50/60 Hz. Confirm the project supply before ordering.
Is WiFi available on AE-5503K?
Yes. Select AE-5503K-WIFI for Smart Life app control and state the WiFi requirement in the inquiry.
Explore the range
Related products
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- Model
- AE-5501K
- Protocol
- WiFi, Zigbee, 0-10V
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AE-5502K FCU Smart Thermostat for fan coil unit hvac control, with OEM/ODM support, smart control options and factory-direct supply from ACMELEC.
- Model
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- Protocol
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FCU Thermostat
AE-5507K FCU Smart Thermostat
AE-5507K FCU Smart Thermostat for fan coil unit hvac control, with OEM/ODM support, smart control options and factory-direct supply from ACMELEC.
- Model
- AE-5507K
- Protocol
- WiFi, Zigbee, 0-10V
Samples, MOQ and lead time
Purchasing information
- Pricing is quoted according to model, configuration and order quantity.
- Standard MOQ: 60 units/sets.
- Standard stock samples: approximately 3 working days.
- Functional or protocol-configured samples: approximately 15–20 working days.
- Logo, manual or packaging-adjusted samples: approximately 10 working days.
- Mass-production lead time is confirmed according to quantity and production schedule.
Logo, packaging and certification
- Free laser-engraved product logo when the standard MOQ is met.
- Orders below 500 units/sets use standard white corrugated packaging.
- Full-color logo packaging is available from 500 units/sets.
- CE, RoHS, applicable RED, FCC and relevant wireless-module documents are confirmed by model and target market.
AE-5503K rating and communication questions
Does a 3 A wiring photograph change the standard AE-5503K rating?
No. The standard AE-5503K is rated 5 A. The 3 A-labelled photographs are wiring-layout references for another hardware version. Check the supplied unit rating label and the diagram for the ordered pipe, valve and fan configuration.
Does every AE-5503K include the RS485 version shown in the gallery?
No. The gallery includes a diagram labelled as an RS485 version. It does not establish that every AE-5503K includes RS485. Confirm the ordered communication hardware, terminal diagram and application protocol with the quotation.