# How to Fix LG Error gAS (Gas Supply Error)
## Explanation: What the “gAS” Code Means in Plain English
The LG error code **”gAS”** is relatively rare on washing machines, but it appears frequently on LG Combo Units (Washer/Dryers) or dedicated LG Dryers.
This code **does not indicate a leak or a danger to your home’s gas supply.** Instead, it signifies that the dryer component of your appliance failed to ignite the gas needed to produce heat.
In 90% of cases, the appliance is attempting to ignite the flame, but the gas flow is being stopped prematurely. This failure is almost always caused by a malfunctioning component called the **Dryer Gas Valve Solenoid**.
—
## Step-by-Step Fix: How to Diagnose the “gAS” Error
Before attempting any internal repairs, ensure the issue isn’t related to a simple external factor.
### Phase 1: External Checks (Safety First)
1. **Check the Gas Supply:** Ensure the main gas shut-off valve behind the dryer or combo unit is fully open. If the dryer shares a gas line with another appliance (like a stove), ensure that appliance is working correctly.
2. **Power Cycle the Unit:** Unplug the LG appliance for 5 minutes, then plug it back in. This clears temporary software errors and sometimes resets the valve assembly.
3. **Run a Test Cycle:** Start a short, timed drying cycle (e.g., 20 minutes on high heat). Listen carefully during the first 5 minutes. You should hear a faint *click-click-click* (the igniter), followed shortly by a *whoosh* (the successful ignition of the gas). If you only hear the clicks and never the whoosh, proceed to Phase 2.
### Phase 2: Internal Diagnosis (Focusing on the Solenoids)
***Disclaimer: Always unplug the appliance from the power source before removing panels or handling internal components. Gas-related repairs should only be performed by individuals comfortable working with electrical components near gas lines.***
The gas valve assembly typically consists of two or three solenoid coils attached to the main gas valve. These solenoids act as gates, opening in sequence to allow gas to flow to the burner. If one or more fail, the gas flow is interrupted, and the unit throws the “gAS” error.
1. **Locate the Gas Valve Assembly:**
* Unplug the unit and turn off the gas supply line.
* Remove the rear panel or the bottom front access panel (location varies by model).
* The gas valve assembly is located near the burner tube and igniter.
2. **Test the Solenoids (Recommended Method: Resistance/Ohms Test):**
* Carefully remove the wires leading to the solenoids.
* Set your multimeter to the Ohms ($Omega$) resistance setting.
* Test the resistance across the two terminals of each solenoid coil.
**Expected Results (General Guidelines):**
| Solenoid Type | Expected Ohms ($Omega$) Reading | Status |
| :— | :— | :— |
| **Primary Coil** (usually the largest) | 1,000 to 1,300 Ohms | Pass |
| **Secondary Coil** (usually the smaller) | 1,300 to 1,500 Ohms | Pass |
If any solenoid shows an **Open Loop** (OL) or **Infinity** reading, that coil has failed and is preventing gas flow.
3. **Replace the Solenoids:** The safest and most effective fix is usually replacing **all** of the solenoids as a set, as they are often sold together and if one has failed, the others are likely close behind.
* Remove the mounting screws holding the solenoids in place.
* Install the new solenoid coils, ensuring they seat securely on the gas valve body.
* Reconnect the wiring, making sure the connections are tight.
* Reassemble the dryer, plug it in, turn the gas back on, and test the drying cycle.
—
## Call to Action
Check the price for a replacement Dryer Gas Valve Solenoid here: https://www.amazon.com/s?k=LG+Dryer+Gas+Valve+Solenoid&tag=trivian-20
Need a Replacement Part?
Get the correct part for your LG Dryer quickly:
Check Price for Dryer Gas Valve Solenoid on Amazon →