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LG Dryer 9A5 Error Code: Power Supply Fault Diagnosis and Fix

Quick Answer

9A5 on an LG dryer points to a power supply abnormality detected by the control board. On gas models, verify the outlet is supplying 120V using a multimeter. Check the circuit breaker and confirm no wires are loose at the outlet or junction box.

9A5 on an LG dryer points to a power supply abnormality detected by the control board. On gas models, verify the outlet is supplying 120V using a multimeter. Check the circuit breaker and confirm no wires are loose at the outlet or junction box. If outlet voltage is correct and stable, the main control board (EBR36858904) is the likely failure and will need replacement. Electric models should confirm 240V at the outlet on both legs.

LgDryerSeverity: highDifficulty: advanced75% DIY Success
Time to Fix
45–90 min
Difficulty
advanced
Parts Cost
$120 – $200
Tools Needed
Multimeter, Phillips screwdriver

What Does the 9A5 Code Mean?

The dryer detected an abnormal power supply. Check your outlet voltage and circuit breaker before replacing any parts.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Low or incorrect voltage at wall outlet40%
Tripped or weak circuit breaker24%
Loose wiring at outlet, junction box, or dryer terminal block22%
Failed or failing main control board14%

Symptoms You May Notice

  • 9A5 displayed on control panel
  • Dryer does not start or stops mid-cycle
  • Dryer powers on but no functions respond
  • Display flickers or resets unexpectedly

Can you reset a Lg dryer to clear the 9A5 code?

Unplug the dryer for 10 seconds after resolving the underlying power supply issue. Plug back in and test. If 9A5 was caused by a momentary surge and the board is intact, a reset may clear it. If it returns, the board or supply must be addressed.

Tools Required for Diagnosis

MultimeterPhillips screwdriverNeedle-nose pliersCamera (to photograph wiring before disassembly)

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

1

Check the circuit breaker for the dryer circuit

Check the circuit breaker for the dryer circuit. For gas dryers: look for a single 15A or 20A breaker. For electric dryers: look for a double-pole 30A breaker. Reset it by turning it fully OFF then back ON.

2

Set your multimeter to AC voltage

3

Unplug the dryer

4

Replace the main control board with OEM part EBR36858904

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name
Main Control BoardEBR36858904 · $120–$200

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs
Labor Approach
Our Verdict
BORDERLINE
Estimated Cost: $160 (Parts) vs $600 (New Machine)

Frequently Asked Questions

Is 9A5 more common on gas or electric LG dryers?
9A5 appears most frequently on gas dryers. Gas models run on a single 120V circuit, and any instability in that supply is more likely to trigger the power monitoring fault. Electric dryer 9A5 cases typically involve one leg of the 240V supply dropping out.
How much does it cost to fix LG dryer 9A5?
If the fix is a tripped breaker, it costs nothing. Outlet and wiring repairs by an electrician typically run $75-200. Replacing the main control board (EBR36858904) costs $120-200 for the part plus labor if using a technician.
Can a power surge cause 9A5 permanently?
Yes. A large surge can permanently damage the control board's internal components. In that case, the board needs replacement. A surge protector rated for dryers can help prevent this in the future.

Related Lg Dryer Error Codes

Code: HUBLG Dryer Error Codes: Complete Troubleshooting ReferenceCode: RESETHow to Reset an LG Dryer: All Methods and When to Use Them

Same Fix Works on These Brands

Lg shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

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Models Known to Experience 9A5 Errors

This repair applies to most Lg dryers with this error code. Common model numbers include:

DLGX5501W, DLG7001W, DLG3501W, DLE3400W, DLEX3700W, DLE7150W, DLE3500W

Last verified for technical accuracy on March 14, 2026