Fujitsu AIRSTAGE® UTY-TFSXJ4 Mobile Wireless LAN Adapter
Product Details
The Fujitsu General UTY-TFSXJ4 is a Wireless LAN adapter that connects your compatible Fujitsu AIRSTAGE non-wall-mount indoor unit to the AIRSTAGE Mobile app, giving you smartphone control and monitoring of your heating and cooling system from anywhere.
⚠ THIS ITEM IS NON-RETURNABLE. Do not purchase unless your indoor unit's exact model number appears on the Compatible Model Numbers list below. This adapter is model- and unit-type specific — it will not work with wall-mounted units (those require the UTY-TFSXH4 adapter, sold separately) or with any indoor unit not listed. If you are not 100% sure your model is compatible, email us to confirm fit before ordering. No returns or exchanges will be accepted for incompatible units.
Key Features
- Control your compatible AIRSTAGE system from a smartphone (iOS or Android) via the AIRSTAGE Mobile app
- Direct connection to the air conditioner without a wireless access point required
- Control and monitor On/Off, Mode, Airflow Speed & Direction, and Weekly Scheduling
- Outdoor and room temperature display
- Group functions for monitoring and on/off control by group, zone, floor, or building
- Multiple user access levels — up to 5 user accounts per indoor unit (1 main user + sub users)
- Error handling and history
- Specialty functions (if available on your system): Economy, Energy Saving Fan, Occupancy, Powerful, and Outdoor Unit Low Noise
- Voice control support via Alexa and Google Home (with compatible smart speaker)
- Over-the-air firmware updates
Important: One Adapter Per Indoor Unit
One UTY-TFSXJ4 adapter is required for each indoor unit you want to control via the app. The UTY-TFSXJ4 is built for Non-Wall Mount Indoor Units (UART Type) only.
Smartphone Requirements
- iOS 13.4 or later
- Android 6.0 or later
- Tablets are not supported
The AIRSTAGE Mobile app cannot be used with air conditioners that are not on the Compatible Indoor Units list below.
Compatible Model Numbers — UTY-TFSXJ4
Per Fujitsu General's official spec sheet. Confirm your indoor unit's full model number against this list before purchasing. If your model isn't listed, email us — do not guess.
ACUH Series (ACUH**LUAS1):
ACUH07LUAS1, ACUH09LUAS1, ACUH12LUAS1, ACUH18LUAS1
ADUH Series (ADUH**LUAS1):
ADUH07LUAS1, ADUH09LUAS1, ADUH12LUAS1, ADUH18LUAS1, ADUH24LUAS1
AMUG Series (AMUG**LMAS):
AMUG24LMAS, AMUG30LMAS, AMUG36LMAS, AMUG48LMAS
ARU Series (ARU**RGLX):
ARU12RGLX, ARU18RGLX, ARU30RGLX
Individual Models:
ARUH12LUAS, ASU30RLE
AUU Series (AUU**RGLX — all capacities)
J-Series & V-Series — TLAV1 Models:
Compatible with all TLAV1-series indoor units except ARUL4TLAV1, ASUB18TLAV1, and ASUB24TLAV1 (these three are NOT compatible). Confirmed compatible TLAV1 models include:
AGUA4TLAV1, AGUA7TLAV1, AGUA9TLAV1, AGUA12TLAV1, AGUA14TLAV1, ARUH72TLAV1, ASUA4TLAV1, ASUA7TLAV1, ASUA9TLAV1, ASUA12TLAV1, ASUA14TLAV1, ASUB30TLAV1, ASUB36TLAV1, AUUA4TLAV1, AUUB18TLAV1, AUUB24TLAV1, AUUB30TLAV1, AUUB36TLAV1, AUUB48TLAV1
J-Series & V-Series — TLAV2 Models:
Compatible with all TLAV2-series indoor units.
NOT COMPATIBLE: ARUL4TLAV1, ASUB18TLAV1, ASUB24TLAV1, and any wall-mounted unit requiring the UTY-TFSXH4 adapter. If your model number is not on the list above, email to confirm before ordering — this item cannot be returned once purchased.
Need Help?
Not sure if this adapter fits your system? Contact HEPAFilterSales.com before ordering — we're happy to confirm compatibility using your indoor unit's full model/serial number.
Installation
The UTY-TFSXJ4 is a wire-in adapter. No separate hub or gateway is required. Installation procedures vary by model — consult your Fujitsu Operation Manual for model-specific instructions before beginning.
Turn off the power supply to the air conditioner before installing or removing this adapter. After installation, restore power and wait a minimum of 60 seconds before beginning app configuration.
Documentation & Downloads
Returns & Exchanges
We want every order to go smoothly, and if something is not right we want to make it right. At the same time, for the health and safety of everyone — our team, other customers, and the facilities these products are used in — we cannot resell opened or used filtration and air quality products. Our policy below is built around that reality. If you have any questions about a product before ordering, please reach out — we would rather help you get the right thing the first time than deal with a return after the fact.
Eligibility
Opened or used items are not eligible for return or refund under any circumstances. Products designated as Special Order, Clearance, Discontinued, or Final Sale are also not eligible for return or exchange. All other returns require items to be unused, in new condition, and in original packaging with all accessories and documentation included.
30-Day Return Policy
Unopened, unused items may be returned within 30 days of delivery, subject to a restocking fee of at least 25% of the purchase price. Original shipping costs are not refunded. Return shipping is the buyer's responsibility. A Return Material Authorization (RMA) number is required before shipping any return — contact us first at Help@HEPAFilterSales.com to receive return instructions. Returns sent without an RMA may be refused.
Refunds are processed within 10 business days of receiving and inspecting the returned item. You will be notified by email when your refund has been issued.
Exchanges — Standard Restocking Charge Waived
Exchanges for unopened, unused items are not subject to a restocking fee. Contact us at Help@HEPAFilterSales.com before returning any item to arrange an exchange and receive expert advice on the correct solution.
Order Cancellations
Contact us immediately if you need to cancel an order. Not all orders can be cancelled once placed — freight and special-order items in particular may ship before a cancellation can be processed.
Damaged or Incorrect Items
If your order arrives damaged, note the damage with the delivery carrier at time of delivery, photograph the damage, and email us within 48 hours of delivery at Help@HEPAFilterSales.com. We will arrange return shipping and send a replacement at no additional cost to you.
If you receive an incorrect item (compared to what was ordered), email us your order number and a description of the issue. We will arrange return shipping and send the correct item at no cost to you.
Defective Items
Suspected product defects and performance issues are warranty matters handled directly by the manufacturer — they are not eligible for return or return shipping reimbursement from HEPA Filter Sales, LLC. Contact us and we will provide manufacturer contact information to assist with a warranty claim.
For More Information, please take a moment to review our governing policies:
Returns & Refunds Policy
Shipping Policy
Purchase Options & Subscription Policy