Diagnose Samsung Dishwasher with SmartThings

Rather than pulling the machine to meter components blind, SmartThings talks to the control board and reports which subsystem failed. It works even on a misbehaving dishwasher as long as the board still has power and Wi-Fi. This guide covers pairing a DW80-series unit, running the self-test, and turning the result into the right part number.

Before You Start#

Safety warning: SmartThings diagnostics do not require disconnecting power. The dishwasher must remain powered on and connected to Wi-Fi for remote diagnostics to function.

You need a phone with the SmartThings app, your home Wi-Fi password, and the model number from the label on the door edge.

Step-by-Step#

1. Confirm your model supports Wi-Fi#

Not every Samsung dishwasher has a radio. The DW80R (2019 and later), DW80T (2020 and later), DW80B (2022 and later), and Bespoke lines generally do, and a model number ending in an S suffix — such as DW80R5061US — usually means Wi-Fi. Older DW80J and DW80K units generally do not, and those use the manual mode below instead.

2. Install and sign in to SmartThings#

Download SmartThings from the App Store or Google Play, then sign in or create a Samsung account. Grant the location and Bluetooth permissions it asks for during setup, and put your phone on the same 2.4 GHz network you want the dishwasher to use — these units do not join 5 GHz.

3. Pair the dishwasher#

On most models, press and hold Sanitize and Dry together for 3 seconds until the Wi-Fi indicator blinks. In the app, tap the plus icon, choose Add Device, then Samsung and Dishwasher, and let it find the unit over Bluetooth. Enter your Wi-Fi password when prompted; pairing takes about 2 minutes, and standing within a few feet of the machine helps it connect.

4. Run the self-diagnosis#

Open the dishwasher in SmartThings and find Device Care or the diagnostics section. Start the self-diagnosis and let it exercise each subsystem — the inlet valve, drain pump, heating element, thermistor, leak sensor, door latch, WaterWall motor, and spray-arm flow. The run takes roughly 3 to 5 minutes and returns a card marking each system Normal or Problem Detected.

5. Turn the result into a part#

SmartThings names the failed system, and the panel code and likely part follow from it:

6. Read the error history#

Device Care keeps a timestamped log of past faults, which is gold for intermittent problems. Look for patterns — a fault that lands at the same time daily may track water-pressure or electrical-load changes, and errors that cluster during heavy hot-water use can mean the machine is starved of hot water.

7. Export a report before booking#

SmartThings can generate a shareable report with model and serial numbers, firmware version, error history, and live sensor readings. Send that to your repair service ahead of the visit so the technician arrives with the right part and skips the usual second trip.

Manual Mode for Non-Wi-Fi Models#

If your dishwasher predates SmartThings, use the built-in self-test: with the door closed and the machine idle, hold Start/Reset for 3 seconds (button models) or the two rightmost touch areas for 3 seconds (touchpad models). The display steps through sensor readings — water temperature, thermistor resistance, door-switch state, and a pump test — each for about 10 seconds. Press Start/Reset or open the door to exit.

Troubleshooting the Connection#

• Dishwasher not found during setup: confirm you are on a 2.4 GHz band, since these radios ignore 5 GHz and auto-switching mesh networks.
• Connection drops often: the antenna sits behind the stainless control panel, which attenuates signal; a Wi-Fi extender near the kitchen helps.
• Diagnostics will not finish: cancel any running cycle, clear errors with a power reset, and try again.

When to Call a Pro#

Book a technician if the diagnosis reports several failures at once (a control-board clue), if it cannot reach one or more sensors (a harness fault), if the recommended action is Contact Service, or if the same fault recurs after a prior repair.

Need Professional Help?#

• Dishwasher repair service
• Samsung appliance repair
• Dishwasher repair cost guide