A2/A3 Series Fix Module Address Jump
Troubleshooting Missing Modules Showing at Different Addresses
If you're seeing modules listed as missing, but those same modules appear as connected at different AquaBus addresses, they may have simply "jumped" addresses. This can happen for a variety of reasons; however, if you haven’t already contacted our customer support team, we strongly recommend doing so. This behavior might be a symptom of a larger issue in your system.
Why This Happens
Each module’s settings—such as input probe names or output names (like outlets on an EB832)—are tied to its AquaBus address, not to the physical module itself.
This means that if a module forgets its address and reconnects thinking it’s a new device it will reappear with default settings. This is what makes it look like a module is missing while another “new” one appears.
Below is an example of a system where the modules jumped address. We can see the FMM, DOS Quiet Drive, and EB832 had all jumped address.
In the screenshot above the addresses 2, 3, and 5 are the original programmed addresses for the EB832, FMM, and DOS Quiet Drive respectfully.
How to Fix It
The Module Replacement task in Fusion is the easiest way to resolve this issue.
Although this task is originally designed for replacing failed hardware, you can also use it to restore modules to their original AquaBus addresses.
⚠️ Note: For Trident modules like the NP and ACM, there's a separate replacement task specifically for those devices.
⛔ Stop: If there are duplicate module types (for example, two or more EB832 units), stop and identify each module before continuing. This ensures you select and configure the correct device in the following steps.
Handling Multiple Modules of the Same Type
If you have more than one module of the same type (for example, two EB832s), you’ll first need to identify which connected module corresponds to which physical unit.
To help with this, check out our article on: Understanding Module Addresses
Using the Module Replacement Task
Let's go to Tasks in Fusion and trigger Module Replacement
On the Tasks screen you can filter them by title, description, and/or tags. Below we typed the word "module" in the title filter.
After selecting the Module Replacement task follow the steps given. This task must be ran separately for each module we intend to move.
After the module has been moved back to its original AquaBus address, the system may still show the incorrect (previous) address as Missing. This is expected behavior.
Once you have confirmed the module is operating correctly at its original address, you should delete the old, incorrect address from the module list. This step removes the leftover “Missing” entry and helps keep your system configuration clean and accurate.
Select the missing module to be deleted. In this case we are starting with the EB832 at address 10.
Under the module's configuration select Delete then select the Update Apex button in the top right.
Repeat the steps above for all the modules that have jumped address.