If you changed your home network, your Samsung SmartThings washer may stop appearing in the app until you reconnect it.
This guide shows the fastest way to restore the connection and explains why pairing can fail in the first place.
Why your Samsung SmartThings washer loses connection after WiFi changes
Samsung SmartThings appliances store the details of the WiFi network they were paired with, including the SSID, password, and some router settings.
If you replace your router, rename the network, switch bands, or change the password, the washer can no longer authenticate on the old connection.
Most SmartThings washers connect over a 2.4 GHz WiFi network, not 5 GHz, which is an important detail during re-setup.
A router reset, mesh network upgrade, or ISP equipment swap can also trigger disconnection even if the washer itself still powers on and runs cycles normally.
What you need before reconnecting
Before starting the pairing process, gather the basics so you do not get stuck midway through setup.
- Your Samsung account login
- The SmartThings app installed on your phone
- The new WiFi name and password
- A 2.4 GHz network with a strong signal near the washer
- Access to your router or mesh system settings, if needed
If your router combines 2.4 GHz and 5 GHz under one network name, check whether it supports band steering.
In some cases, temporarily separating the bands makes onboarding much easier.
How to reconnect Samsung SmartThings washer after changing WiFi
The exact screens may vary slightly by model, but the process is generally the same across Samsung SmartThings washers.
- Open the SmartThings app on your phone and sign in with your Samsung account.
- Make sure your phone is connected to the new WiFi network.
- Go to the Devices tab and select your washer if it still appears offline.
- If the washer is listed, open its settings and choose the option to remove, reset, or reconnect the device.
- On the washer, enter WiFi setup mode by following the model-specific steps in the display or manual.
Many Samsung washers use the Smart Control or WiFi button combination to begin pairing.
- In SmartThings, tap Add device, then select Samsung washer or Appliances.
- Follow the prompts to enter the new network password and complete pairing.
- Wait for the app to confirm that the washer is connected and available online.
If the washer connects successfully, test a remote feature such as cycle monitoring or status alerts.
This confirms that the appliance is not just on the network, but fully linked to your Samsung account in SmartThings.
How to put the washer back into pairing mode
If the washer does not show up during setup, you may need to manually re-enter pairing mode.
On many Samsung washers, this is done by pressing and holding the Smart Control, WiFi, or related function buttons until the display shows a wireless indicator or setup prompt.
Because button combinations vary by model number, check the user manual or the support label inside the door frame.
If you are unsure, model-specific guidance from Samsung Support is safer than guessing, especially on newer Bespoke or AI-enabled machines.
Common problems during reconnection
Network changes often expose setup issues that were hidden before.
These are the most common reasons Samsung SmartThings washer pairing fails after a WiFi change.
The washer only supports 2.4 GHz WiFi
Many smart appliances, including Samsung washers, do not connect to 5 GHz bands.
If your phone is on 5 GHz and the washer is trying to join the same mixed network, the app may stall or fail.
Try switching the phone and the washer setup process to a dedicated 2.4 GHz SSID.
The password or security type changed
If your router now uses WPA3-only security, some appliances may not complete onboarding.
A WPA2 or WPA2/WPA3 mixed mode is often more compatible.
Also verify that the password is correct, because a single typo can look like a device failure.
The signal is too weak near the laundry area
Washers may be located in basements, garages, or utility rooms where WiFi is weaker.
During setup, bring your phone closer to the washer or temporarily move the router, mesh node, or access point closer to the appliance.
The washer is still linked to the old network profile
Sometimes the appliance keeps the previous connection record and needs a fresh reset.
Removing the washer from the SmartThings app and re-adding it can clear the stale profile.
Resetting the network settings on the washer
If the normal reconnection flow fails, a network reset can help.
This does not usually erase wash settings like custom cycles, but it does clear the WiFi information stored on the appliance.
Samsung support documentation typically recommends a model-specific reset process, so consult your manual for the exact sequence.
After the reset, set up the washer again in SmartThings as if it were a new device on your network.
- Use the washer control panel to clear wireless settings
- Restart the SmartThings app
- Reboot your router and modem
- Add the washer back as a new device
Router settings that can block Samsung SmartThings
Some router features improve security but create friction for smart-home appliances.
If the washer still will not reconnect, review these settings:
- MAC address filtering is disabled or updated to allow the washer
- AP isolation or client isolation is turned off
- DHCP is enabled and can assign an IP address automatically
- The network is not using unsupported enterprise authentication
- SSID broadcast is enabled so the washer can detect the network
Mesh systems can also cause issues during setup if the appliance keeps switching between nodes.
In that case, force the washer and phone onto the same node or use the primary router during pairing.
SmartThings app checks after the washer reconnects
Once the washer is online again, make sure SmartThings is allowed to work properly on your phone.
App permissions, background refresh, and notifications matter if you want alerts and remote monitoring.
- Allow local network and Bluetooth permissions if prompted
- Turn on notifications for cycle updates and errors
- Confirm the washer appears as online in the Devices list
- Check that routines or automations still reference the correct device
If you renamed the washer or moved it to another room in the app, verify that scenes and automation rules still point to the updated device entry.
When to remove and re-add the washer completely
Some users only need to reconnect the existing device entry, but a full remove-and-add process is better in these situations:
- You changed routers and the old SSID no longer exists
- The washer remains stuck offline after multiple attempts
- SmartThings shows the device but will not load its controls
- The washer was replaced, factory reset, or moved to a different Samsung account
A clean re-pairing often resolves corrupted device records, especially after major home network changes.
Best practices to avoid future WiFi issues
Although WiFi changes are sometimes unavoidable, a few habits make future reconnection easier.
Keep the network name and password stable when possible, use a compatible 2.4 GHz band for appliances, and document your router settings before changing hardware.
It also helps to keep the SmartThings app updated, because Samsung periodically improves device support and onboarding behavior.
If you plan to replace your router or mesh system, reconnect critical smart appliances soon afterward instead of waiting until you need them.
