SERVICE BULLETIN – VRF-0162 UTY-ASGXZ1 / AMGXZ1
Subject: Service Tool function failure
Product: Service Tool (VRF option)
Model: UTY-ASGXZ1 / UTY-AMGXZ1
Bulletin reference: VRF-0162
Issued: 2 August 2018
Issue
When an operation instruction is sent to an indoor unit from the Operation Setting function of the Service Tool, the indoor unit fan motor may not operate.
Applicable indoor units: Duct-type indoor units used with S Series and V Series systems.
Affected versions
| Model | Product Version | Software Version | Status |
|---|---|---|---|
| UTY-ASGXZ1 UTY-AMGXZ1 | 2.0 | 0.2.0.0 0.2.0.1 0.2.0.2 0.2.0.3 | Target of failure occurrence |
| 2.1 | 0.2.1.0 | Target of failure occurrence | |
| 2.1 | 0.2.1.1 | Modified version |
Required action: Update the Service Tool software to 0.2.1.1 or later.
How to update the Service Tool
Option 1 – Automatic online update
- Connect the Service Tool computer to the Internet.
- Start UTY-ASGXZ1 / UTY-AMGXZ1.
- If a later software version is available, the update prompt will be displayed automatically.
- Select Yes to start the software update.
- Allow the update to complete and then confirm the installed software version.
Note: The automatic update message is not displayed when the installed software is already the latest version.
Option 2 – Manual update check
- Start the Service Tool.
- Right-click the Service Tool icon in the Windows task tray.
- Select Version.
- The Version window will display the current Product Version and Software Version.
- Select Checking for later version.
- If an update is available, select Update.
- Wait for the download and installation to complete, then confirm that the software version has changed to 0.2.1.1 or later.
Technician check
| Symptom | Indoor fan does not run when an operation command is sent from Service Tool Operation Setting. |
| Applicable equipment | S Series and V Series duct-type indoor units. |
| First check | Confirm the Service Tool software version. |
| Corrective action | Update to software version 0.2.1.1 or later. |
Important: This bulletin addresses a Service Tool software function failure. If the Service Tool is already on the modified software version and the indoor fan still does not operate, continue diagnosis of the indoor unit/system rather than treating the symptom as this software issue.