Commercial Washer or Dryer Communication Loss – “No Comm” or Intermittent Signal Errors | UpFix

When Machines Stop Talking, Everything Stops Working

Commercial laundry machines are a team effort. The main control board, motor drive, display, and payment system all communicate constantly.
When that communication link breaks, the entire system halts—cycles won’t start, displays flash “No Comm,” and customers see nothing but frustration.

These issues often come from a failing communication interface board or a corrupted logic circuit in one of the connected modules. When that happens, even a single bad board can take down a whole bank of washers or dryers.

---

Common Symptoms

• Display shows “No Comm”, “Link Error”, or “Communication Fault”

• Machine won’t start, even though power is on

• Payment system accepts credit but doesn’t start the cycle

• Inconsistent or slow response between user interface and main board

• Random resets or flashing lights during operation

• Works one moment, fails the next

These problems are common across Speed Queen, Huebsch, Dexter, Maytag, Unimac, Continental Girbau, and Electrolux machines.

---

Typical Fault Codes and Their Meaning

If wiring and harnesses are intact but “No Comm” persists, the fault lies in the electronics that handle board-to-board communication.

---

Why Communication Boards Fail

1. Power surges or brownouts corrupting logic ICs.

2. Humidity and condensation shorting communication traces.

3. Vibration damage cracking solder joints on connectors.

4. Aging interface chips leading to data loss or delay.

5. Corroded connectors between display, payment, and control boards.

As one operator posted online: “It just flashes COMM FAIL, even after I replaced the main board—had to swap the little daughterboard to fix it.” That smaller board—the communication interface—is usually where the true problem hides.

---

Why Repair Is Better Than Replacement

New communication boards can cost $400–$800, and in many cases, replacing the wrong board won’t solve the problem because communication circuits are interlinked.

UpFix repairs the exact faulty board—not the whole system—restoring data integrity and saving you from unnecessary replacement costs. Your original configuration and connections stay intact, plug-and-play ready.

---

How UpFix Repairs Communication Boards

1. Signal path diagnostics for data voltage, frequency, and packet integrity.

2. Replacement of failed UART, CAN, and RS-485 transceiver ICs.

3. Resoldering of cracked communication connectors.

4. Cleaning and resealing against corrosion and oxidation.

5. Simulation testing with multiple modules to confirm live data exchange.

Each board is tested under continuous data load to ensure flawless performance before shipping back.

---

Real-World Example

A hotel laundry facility reported six Unimac washers all showing “No Comm”. The tech replaced one main board—no improvement. When the boards were sent to UpFix, diagnostics revealed two bad UART chips and one corroded connector in the network loop. After repair, all six machines came online and synced immediately, saving the facility thousands in replacement parts and lost labor hours.

---

Supported Brands

• Speed Queen / Huebsch / Dexter

• Maytag / Unimac / Continental Girbau

• Electrolux / ADC

---

Why Operators Choose UpFix

• Save up to 80% vs OEM replacements

• 24–48-hour turnaround on most repairs

• Plug-and-play reinstall—no setup needed

• Eco-friendly repair prevents unnecessary waste

• Trusted nationwide by laundromat and hotel operators

Reliable communication between control systems means fewer errors, faster service, and happier customers. UpFix keeps your machines connected and earning.

---

Stay Connected, Stay Operational

When your washers or dryers can’t talk to each other, your business goes silent.
Send your part to UpFix for professional communication and interface board repair.
We’ll restore flawless signal reliability, save you up to 80%, and help your laundry stay in sync—and in business.