If you are seeing this code, your washer has likely come to a complete halt to prevent overheating or damage. You might notice the water staying cold when it should be hot, or the cycle might simply refuse to start while that pesky “E SH” flashes on the display. Don’t worry, though! While it sounds technical, this is a very common issue that most DIYers can fix with just a few basic tools and a little bit of patience. We are going to walk through this together, step-by-step, until your laundry is back on track.
| Category | Details |
|---|---|
| Difficulty | Moderate (Requires basic tool use and part handling) |
| Estimated Time | 45 to 75 Minutes |
| Tools Needed | Phillips Head Screwdriver, 5/16″ Nut Driver, Digital Multimeter, Needle-nose Pliers |
| Estimated Cost | $25 – $55 (Replacement Thermistor) |
Symptoms of the E SH Error
Before we dive into the guts of the machine, let’s confirm what you’re seeing. The “E SH” error code rarely travels alone; it usually brings a few frustrating symptoms with it. Here is what you should look out for:
⚠️ Safety Precaution: High Voltage
For your safety and to avoid voiding the warranty, please check the official docs.
- The Digital Display Flash: The most obvious sign is the letters “E” and “SH” alternating on your control panel, usually accompanied by a persistent beeping sound.
- Cycle Interruption: The washer may fill with water but then stop abruptly before it begins to agitate, as the board realizes it can’t “read” the water temperature safely.
- Incorrect Water Temperature: You might notice the water is scalding hot even on a “cold” setting, or vice versa, because the faulty sensor is giving the machine “junk data.”
- Unresponsive Buttons: Sometimes, the machine will lock out all commands until the error is cleared, leaving your wet clothes trapped inside.
What Triggers this Code?
To fix the problem permanently, we need to understand why the “Sensor Short” happened in the first place. Think of the thermistor as the “thermometer” of your washer. When it “shorts,” it’s essentially telling the brain of the washer that the temperature is 500 degrees or -50 degrees, and the brain panics for safety reasons.
1. Internal Thermistor Failure: This is the most common cause. Over years of use, the internal resistor inside the thermistor can degrade due to constant heating and cooling cycles. Eventually, the internal insulation breaks down, creating a direct electrical short.
2. Vibration and Chafing: Speed Queen washers are powerful machines. Over hundreds of cycles, the heavy vibration can cause the wiring harness leading to the sensor to rub against the metal frame or the outer tub. This “chafing” wears away the wire insulation, allowing the copper to touch the frame and create a short circuit.
3. Corrosion from Humidity: Washers live in damp environments. If a small amount of moisture or detergent residue gets into the electrical plug that connects to the sensor, it can cause corrosion. This green, crusty buildup bridges the electrical contacts, tricking the machine into thinking there is a short.
4. Control Board Glitch: Occasionally, the sensor is actually fine, but the “input circuit” on the main control board has failed. This is rarer and usually happens after a power surge or a nearby lightning strike.
Troubleshooting & Replacement Instructions
Alright, let’s get our hands dirty! Follow these steps closely, and we’ll get that Speed Queen humming again. Remember, there’s no rush—take it one screw at a time.
- Safety First (Power Down): Before you do anything else, unplug the washer from the wall outlet. If you can’t reach the plug, go to your home’s breaker box and flip the switch for the laundry room. Warning: Never work on a machine that is plugged in; even a “shorted” sensor can carry enough voltage to give you a nasty shock.
- Accessing the Internals: For most front-load and top-load Speed Queens, you’ll need to remove the front service panel or the top cover. Use your 5/16″ nut driver or Phillips screwdriver to remove the screws located at the bottom or rear of the panels. Gently pull the panel toward you and set it aside on a rug to avoid scratching it.
- Locating the Thermistor: Look for a small plastic component with two wires (usually thin wires, often blue or white) plugged into the side of the outer tub or near the heating element housing. This is your thermistor. It’s held in place by a rubber gasket or a small retaining clip.
- Visual Inspection of Wires: Before pulling the part, look at the wires leading to it. Do you see any black burn marks? Any frayed copper? If the wires look chewed or worn, your problem might just be a broken wire. If they look clean, proceed to the sensor test.
- Testing with a Multimeter: Set your multimeter to the “Ohms” (Ω) setting. Disconnect the wire harness from the thermistor and place your meter probes on the two metal terminals of the sensor itself. At room temperature (around 70°F), you should see a reading between 10k and 50k ohms (check your specific model manual for exact specs). If the meter reads “0” or “OL” (Open Link), the sensor is definitely shorted and must be replaced.
- Removing the Faulty Sensor: Use your needle-nose pliers to gently wiggle the sensor out of its housing. It might be snug because of the rubber seal. Be careful not to drop it into the tub! Once it’s out, take a clean rag and wipe the opening to ensure no debris prevents the new one from sealing.
- Installing the New Part: Push your new Speed Queen thermistor into the hole until it clicks or sits flush against the gasket. Reconnect the wiring harness, ensuring you hear a “snap” so you know the connection is secure.
- Reassembly and Testing: Replace the panels and tighten the screws. Plug the machine back in. Turn it on and run a “Rinse and Spin” cycle or a quick wash. If the E SH code doesn’t reappear and the machine completes the cycle, you’ve done it! You’ve saved a service call!
How to Prevent Error E SH
Now that you’ve fixed the issue, let’s make sure it doesn’t come back to haunt you. Prevention is the key to a long-lasting Speed Queen!
- Install a Surge Protector: These sensors are sensitive to voltage spikes. A dedicated appliance surge protector can shield your washer’s control board and sensors from the “dirty power” that often occurs during storms or grid shifts.
- Manage Moisture: If your laundry room is exceptionally humid, try using a dehumidifier. Excess moisture can accelerate corrosion on the electrical pins of the thermistor, leading to premature “short” readings.
- Avoid Overloading: Excessive vibration from unbalanced, massive loads can cause the internal components to rattle. While Speed Queens are “commercial grade,” keeping your loads balanced reduces the physical stress on the wiring harness, preventing those “chafing” shorts we discussed earlier.
FAQ
Frequently Asked Questions
Q: Can I just bypass the sensor by joining the two wires together?
A: Absolutely not! Joining the wires will create a “hard short,” which will immediately trigger the E SH code again and could potentially melt the circuits on your main control board. The board needs to see a specific resistance value to operate safely.
Q: Is the E SH error the same as an E DL error?
A: No. E SH is specifically for a sensor short (usually the temperature thermistor). E DL typically refers to a “Door Lock” error. While they are both electrical in nature, they require different parts and different repair steps.
Q: My multimeter shows a reading, but I still get the error. What gives?
A: Thermistors can be “intermittent.” They might test fine at room temperature but “short out” once they get warm. If you’ve inspected the wiring and it looks perfect, the thermistor is still the most likely culprit and should be replaced as a first step due to its low cost compared to a control board.