EBR65640204 LG Refrigerator Control Board, the Compressor Power Board Behind No-Cool on LG and Kenmore Elite Models
Part EBR65640204 is the LG refrigerator control board that sits on the power side of the cooling system, taking the run command and driving the compressor. It is fitted across LG French-door and four-door refrigerators of the 2010 to 2012 generation, including the LFC21776, LFX25978, LFX28978, LMX25988 and LSMX214 families, and across the LG-built Kenmore Elite 795.71 series. These cabinets also carry a separate main board in the same housing, so the first thing worth settling is which of the two you are actually looking at. This guide covers the symptoms, the display codes that do and do not point here, how to separate this board from the linear compressor it drives, every confirmed model, and what a discontinued part number means for your repair.
Why Is My LG Refrigerator Not Cooling While the Lights and Display Still Work?
Common symptoms associated with a failing EBR65640204 LG power control board include both compartments warming while the lights, display and fans keep working, a compressor that never starts, a repeating click from the machine compartment, and cooling that returns after a power reset then quits again. These are commonly reported on LG French-door and Kenmore Elite 795.71 models.
If your refrigerator is showing one or more of the following, the power control board is a reasonable area to investigate. The signature pattern on this platform is a cabinet that seems fully alive in every way except cooling. Work through the diagnosis sections below before ordering, because the compressor this board drives can produce the same picture.
- Fresh food and freezer sections both warming up while the interior lights, display and fans keep working
- The compressor never starts, or starts for a few seconds and drops straight back out
- A repeating click or tick from the machine compartment at the back, returning every few minutes
- Complete silence from the back of the cabinet where the compressor hum used to be
- Er CF, Er FF, Er IF or Er CO standing on the dispenser display
- Cooling comes back for a day or so after the unit is unplugged, then fails again
- Cooling stopped in the hours or days following a power surge or an outage
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How Do I Find the Part Number on My LG Control Board? Watch the Video
The LG service number for this board is printed on a label on the assembly, while the bare circuit board underneath is silkscreened EAX61745402. To verify the EBR65640204, unplug the refrigerator, open the control housing on the back of the cabinet, and read the printed label rather than the silkscreen, which is shared with a neighboring assembly number.
This short video shows how to locate and read the part number sticker on an appliance control board and how to confirm you have the right part before opening the packaging. The same method applies to the EBR65640204, with one extra caution: the circuit board itself commonly carries the silkscreen number EAX61745402, which is also used under a closely related assembly number, so read the printed label. General installation guidance is included in the Quick Start Guide shipped with every order.
LG Refrigerator Power Control Board Symptoms, What Each One Points To
The EBR65640204 has no customer-readable blink code. It is diagnosed by symptom pattern and by whatever the dispenser display reports. The most commonly reported signs are no cooling with the rest of the refrigerator alive, repeated clicking from the machine compartment, and a compressor that never receives drive voltage. Each row points toward a likely cause and a next step.
Read the table as a direction of travel rather than a verdict. On this platform the power control board and the linear compressor it drives produce overlapping pictures from the front of the refrigerator, and the rule-out section further down explains how the two are separated.
| Symptom | What It May Indicate | Recommended Next Step | Board? |
|---|---|---|---|
| Nothing cools, but lights, display and fans are normal | The compressor is not being driven | Feel and listen at the compressor. Silent and cool to the touch while the fans keep running is the pattern most associated with this board. Rule out the start delay first by waiting ten minutes after any power interruption. | Common |
| Repeating click or tick from the machine compartment | Start attempts that never take hold | Clicking here can come from the board's own switching or from a compressor that cannot come up to speed. Because both sound the same through the cabinet, the compressor needs checking before this board is ordered. | Board or compressor |
| Complete silence at the back for hours on end | No start command reaching the compressor | Confirm the refrigerator has power at the outlet and that the harness between the two boards is seated. Persistent silence with power confirmed at the board is a commonly reported board fault. | Common |
| Er CF standing on the display | Condenser fan reported as not running | Inspect the condenser fan and its harness, and clear the condenser coil. When the fan and wiring both check out and it still will not turn, the drive circuit on this board becomes a commonly reported cause. | Possible |
| Er FF or Er IF standing on the display | Freezer or ice room fan reported as not running | These usually trace to the fan motor itself or to ice packed around it. Check the fan and its harness before a board enters the conversation. | Usually the fan |
| Er CO standing on the display | The control boards have lost communication | Points at the harness between the boards, or at either board. Reseat every connector at both ends before deciding which side is at fault. | Either board or harness |
| Er FS, Er rS, Er dS or Er rt | A sensor is reading out of range | The control system is reporting a thermistor that has drifted or opened. Test the sensor the code names. Fitting a board will not clear a genuine sensor fault. | Not this board |
| Compressor runs but the cabinet stays warm | Sealed system fault, or a compressor not pumping | If the compressor is warm and vibrating and the condenser is getting hot, the drive side is doing its job. That puts the fault downstream of this board and into technician territory. | Usually not the board |
Which LG Error Codes Point at the Power Control Board, and Which Do Not?
LG refrigerators on this platform show Er codes on the dispenser panel. Er CF, Er FF, Er IF and Er CO can implicate the power control board, because fan drive and inter-board communication run through it. Er FS, Er rS, Er dS, Er dH, Er rt and Er gF point at sensors, defrost or the water system instead.
One caution before the table. On this platform the most common power control board failure, a compressor that never starts, frequently shows no code at all, because the control system has nothing abnormal to report from the sensors it can read. A service test button on the control board is used to force run states, and a button combination on the dispenser panel clears a stored code, but both differ across series and revisions, so follow the procedure printed for your model rather than a sequence found elsewhere.
| Code | What It May Indicate | Is It This Board? |
|---|---|---|
| Er CF | Condenser fan motor reported as not running. The fan and its harness come first, and the coil should be cleared while the back is open. A confirmed good fan that still receives nothing is a commonly reported fault on the power side. | Possible |
| Er FF | Freezer evaporator fan reported as not running. Most often the fan motor itself, or ice built up around the blade. Worth looking at the harness and the drive output only once the fan has been cleared. | Usually the fan |
| Er IF | Ice room fan reported as not running. Same order of checks as Er FF, starting with the ice maker fan and its wiring. | Usually the fan |
| Er CO | Communication lost between the control board and the display board. Reseat the harness at both ends and inspect the pins. With the wiring confirmed good, either board can be responsible. | Either board or harness |
| Er dH | Defrost circuit reported as not performing. Test the defrost heater and the defrost sensor before any board is considered. | Usually defrost parts |
| Er FS / Er rS / Er dS | Freezer, refrigerator or defrost sensor reading out of range. Test the thermistor the code names. The control system is reporting the fault, not causing it. | Not this board |
| Er IS / Er SS / Er rt | Ice room, pantry or room temperature sensor reading out of range. Same approach as the other sensor codes, and the same conclusion. | Not this board |
| Er gF | Water flow meter fault. Belongs to the water and dispenser system rather than the cooling side. | Not this board |
| No code at all, and no cooling | The pattern most associated with this board. A board that never commands a compressor start has nothing abnormal to report, so an empty display is not evidence that the drive side is healthy. | Board-related |
Will the EBR65640204 Fix My Refrigerator? What to Check Before Ordering
The EBR65640204 commonly resolves faults where the compressor never starts while the rest of the refrigerator works normally, where the machine compartment clicks repeatedly and never settles, or where a compressor in good order receives no drive voltage. Before ordering, rule out the linear compressor, the condenser fan and coil, the inter-board harness, and the built-in start delay.
These refrigerators use an inverter-driven linear compressor, and the board and the compressor fail with the same outward picture: no cooling, no start, sometimes a repeating click. A new board cannot revive a compressor that has lost a winding or seized, and getting this the wrong way round is the most expensive mistake available on this platform. Settle it before anything else.
The condenser fan is driven from the power side of the control system, and a fan that has stalled or a condenser packed with dust and pet hair will push the sealed system into a shutdown that reads as a cooling failure. This is a cheap check that gets skipped surprisingly often, and it is also the usual reason an Er CF is standing on the display.
This platform carries two boards that have to talk to each other, and the connector between them is a common source of faults that present as a dead board. An Er CO, an intermittent no-cool, or a unit that recovers for a while after being unplugged all fit a marginal connection at least as well as they fit a failed board.
The control system deliberately holds the compressor off for several minutes after power is restored, so a silent machine compartment straight after a reset is not yet a fault. Separately, a unit left in a showroom display state will not cool whatever parts are fitted to it. Both cost nothing to rule out and both are commonly mistaken for a dead board.
Can I Replace the EBR65640204 Myself? Difficulty and Time Estimate
Replacing the EBR65640204 is a moderate repair that most homeowners complete in 30 to 45 minutes with a Phillips screwdriver and a nut driver. The board sits in the control housing on the back of the cabinet alongside the main board, so the refrigerator has to come away from the wall. Photographing the housing first prevents most failed attempts.
Most DIY-confident homeowners finish this repair in well under an hour. The mechanical work is straightforward once the cover is off; the difficulty is in the sorting. This board shares its housing with the main board, both look broadly similar, and both get called the control board in everyday use, so photograph the housing and every connector before touching anything and identify the board by its printed label rather than by where it sits. If you are not comfortable working around line voltage and the compressor circuit, a qualified appliance technician is always the right call.
Does the EBR65640204 Fit My LG or Kenmore Refrigerator? Compatibility Check
To confirm the EBR65640204 fits, match the printed label on your existing board to EBR65640204 or to a listed cross-reference such as AP5604149 or PS3645704. Model lookups are a helpful starting point, but LG built these cabinets across several production runs, so the label on your own board is the reliable check.
Model Number Check
Enter your refrigerator's model number to check it against our EBR65640204 compatibility records. Not found? Use the buttons below to reach our team directly.
Model lookups are a useful starting point, but LG fitted more than one board in these cabinets and the boards sit side by side in the same housing. The printed label on your existing board is always the most reliable confirmation. Click the image to zoom in.
Which LG and Kenmore Refrigerator Models Use the EBR65640204?
Part EBR65640204 is used in LG French-door and four-door refrigerators from the LFC21776, LFC25776, LFX21976, LFX25976, LFX25978, LFX26978, LFX28978, LMX21984, LMX25984, LMX25988, LMX28988, LMX28994, LSFS213 and LSMX214 families, and in the LG-built Kenmore Elite 795.71 series. Verify by matching the label on your existing board before ordering.
LFC and LFX Series, French Door
LMX Series, Four-Door French Door
LSFS and LSMX Series
Kenmore Elite 795.71 Series, LG Built
Models are listed in base form. Kenmore units show as 795.71053011 or similar on the model plate, and LG units commonly carry a /00 or /01 revision suffix that does not change the board. This list is compiled from cross-reference data and is provided as general guidance only. LG fitted more than one control board in these cabinets and changed boards across production runs, so a model appearing here does not by itself settle which board your particular unit carries. Always verify by matching the printed label on your existing board. If your model is not listed, or you are unsure, contact our team and we will help confirm before you buy.
How Is the EBR65640204 Restored to Spec? The FailSafe Precision Protocol
Every EBR65640204 sold by Appliance Pro USA goes through the FailSafe Precision Protocol, a proprietary 4-step process covering failure pattern analysis, precision diagnostic testing, proactive component replacement using equal or higher-rated parts, and final certification before the board ships.
FailSafe Precision Protocol
Failure Pattern Analysis
Known failure patterns for the EBR65640204 are mapped before any board enters the process, so we know exactly which components to focus on for this specific board type.
Precision Diagnostic Testing
Multi-point diagnostic testing identifies faults and confirms overall board condition. Boards that do not pass diagnostic testing do not advance.
Proactive Component Replacement
Components identified through failure pattern analysis as common weak points are replaced using equal or higher-rated parts, before the board is cleared to ship.
Final Certification
Certified to meet or exceed original LG factory specifications. Tamper-evident hologram applied. Anti-static packaged and sealed for shipping.
EBR65640204 Specifications and Cross-Reference Part Numbers
The EBR65640204 is an LG refrigerator power control board, catalogued as the compressor control board, that drives the inverter linear compressor on LG-built French-door and four-door refrigerators of the 2010 to 2012 generation. The bare circuit board is silkscreened EAX61745402. It cross-references to AP5604149, PS3645704, EAP3645704 and 2668090, and it has been discontinued with no factory substitute.
| Manufacturer Part Number | EBR65640204 (bare circuit board commonly silkscreened EAX61745402) |
| Board Type | Power Control Board / Compressor Control Board (drives the compressor and the power side of the cooling system; the user interface, sensors and cabinet logic sit on a separate main board) |
| Board Location | Control housing on the back of the cabinet, shared with the main board. Exact position varies by series, so identify the board by its printed label rather than by where it sits. |
| Onboard Diagnostics | No customer-readable blink code. Faults surface as Er codes on the dispenser display, or as a no-start with no code at all. See the code table above for general reference. |
| Compressor Type | Inverter-driven linear compressor. Boards of this family are not interchangeable with conventional start-relay compressor controls. |
| OEM Availability | Discontinued. Listed as no longer available from the manufacturer with no factory substitute offered, although limited old stock still surfaces. APU supplies genuine OEM FailSafe Certified units. |
| Cross-Reference Numbers | EAX61745402, AP5604149, PS3645704, EAP3645704, EA3645704, AH3645704, 2668090, PS3604149 |
| APU Status | In Stock, FailSafe Certified, 1-year warranty (registration required), same-day shipping* |
Is It Worth Repairing My LG Refrigerator? What the EBR65640204 Costs vs Your Alternatives
Replacing the EBR65640204 is typically far less expensive than a comparable new LG French-door refrigerator, which commonly runs $1,600 or more, or a technician board replacement, which commonly runs $400 to $700 installed. Because the board is no longer supplied new, a FailSafe Certified unit is one of the few genuine OEM routes left. Figures are general estimates.
What your options typically cost
LG Refrigerator Still Not Cooling After Replacing the Control Board? Start Here
The most commonly reported reasons an LG refrigerator does not cool immediately after an EBR65640204 replacement are judging the result before the compressor start delay has run out, a connector at either board not fully seated, the wrong one of the two boards having been swapped, and a linear compressor that had already failed, which no board can correct.
Give the start delay time to run out
The control system holds the compressor off for several minutes after power is restored, and a full power-down reset after the swap is worth doing to clear anything the system has latched. Silence for the first ten minutes is normal and is not evidence of a bad board.
Reseat every connector at both boards
A connector that looks seated but has not clicked home reproduces the original symptom exactly. Because two boards share the housing and a harness runs between them, check both ends rather than only the board you have just fitted.
Confirm you replaced the right board
The most common reason nothing changes on this platform is that the main board was swapped when the compressor side was at fault, or the reverse. Read the printed label on the board still sitting in the housing and compare it against the symptom sections in this guide.
Check whether the compressor is running now
If the compressor is warm and vibrating and the condenser is heating up but the cabinet is still not cold after several hours, the drive side is working and the fault lies downstream. If the compressor is still silent with a new board fitted, the compressor itself is the next thing a technician should evaluate.
Use the install gloves and handle by edges
Static discharge is a common cause of damage to replacement electronics during installation. Touch the metal refrigerator frame before picking up the board, use the included install gloves, and handle the board by its edges only.
Still not working after all of the above?
Contact our team before returning anything. A brief conversation resolves the majority of post-install situations. We stand behind every board we sell and are here to help you get the result you need.
Which Other LG Refrigerator Parts Fail With the Same Symptoms?
Components that commonly fail alongside or instead of the EBR65640204 include the linear compressor, the main board that shares its housing, the condenser and evaporator fan motors, and the compartment thermistors. Each can produce a picture close to a power control board fault, so ruling them out first reduces the chance of buying the wrong part.
Share your model number and a photo of your existing board's sticker. Our team will help confirm the right part before you spend a dollar. No pressure, no obligation.
Why Buy the EBR65640204 from Appliance Pro USA?
Appliance Pro USA supplies the EBR65640204 as a genuine OEM board restored through the FailSafe Precision Protocol to meet or exceed OEM specifications, backed by a 1-year warranty (registration required), a 30-day return policy, free priority shipping, and same-day shipping on orders placed before 4 PM EST, Monday through Friday.
At Appliance Pro USA, we specialize in high-quality reconditioned replacement control boards, professionally inspected and tested to meet or exceed OEM specifications. Every board we sell undergoes our FailSafe Precision Protocol, meaning components identified through failure pattern analysis as common weak points are replaced proactively using equal or higher-rated parts before the board ever ships to you. With a replacement board from Appliance Pro USA, you're getting a board that's been evaluated and restored to reliable working condition, backed by our 1-year limited warranty (registration required) and 30-day return policy, so you can order with complete confidence.
We offer free priority shipping on every order, and orders placed before 4 PM EST ship same day, Monday through Friday, excluding holidays and scheduled closures. Whether you're a homeowner tackling this repair yourself or a professional technician who needs a reliable source, we're here to help you get the right part and get the job done right the first time.
Not sure this is your board? Send us a photo of your original board's part number sticker and we'll confirm before you buy. Reach us at info@applianceprousa.com
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EBR65640204 LG Refrigerator Power Control Board, Frequently Asked Questions
Common questions about the EBR65640204 cover why the circuit board carries a different number from the label, how to tell this board from the main board that shares its housing, whether a blank display rules the board out, how to separate the board from the linear compressor before spending money, and what a discontinued part number means for the repair.
My board is printed EAX61745402, not EBR65640204. Have I got the wrong part?
No. EAX61745402 is the number silkscreened onto the bare circuit board during manufacture, and EBR65640204 is the assembly number used for ordering, which appears on the printed label. A genuine EBR65640204 carries both. One caution worth knowing: the same EAX61745402 base board is also used under at least one neighboring assembly number, so the silkscreen on its own does not establish which assembly you are holding. Read the printed label, and if it has faded past reading, send us a photo of the board before ordering.
This part is described as a main control board in some places and a power or compressor board in others. Which is it?
Both descriptions circulate for this number, which is exactly why it pays to be precise. The manufacturer catalogues it on the power side of the system, as the board that drives the compressor, and these refrigerators carry a second board in the same housing that runs the display, the sensors and the cabinet logic. Sellers and search results tend to flatten both into the phrase control board. The practical answer is that the number on your label settles it, not the wording in a listing.
The display is not showing any code at all, but nothing is cooling. Does that rule this board out?
It does not. The failure most associated with this board, a compressor that is never commanded to start, frequently produces no code, because the control system has nothing abnormal to report from the sensors it can read. Codes are useful when they do appear, and Er CF, Er FF, Er IF and Er CO are the ones worth taking seriously here, but a blank display is not evidence that the drive side is healthy.
How do I know it is the board and not the compressor before I spend the money?
That is the question worth answering on this platform, because the two failures look identical from the front of the refrigerator and only one of them is an affordable repair. The approach used is to make the board attempt a compressor start and then check whether drive voltage actually reaches the compressor while it tries. Voltage present with no movement from the compressor points at the compressor. No voltage points at the board. The exact connector and the button that forces the start vary by board revision, so work from your model's service instructions, and if that test is beyond what you are set up to do safely, one diagnostic visit costs less than guessing between two parts.
This board is discontinued. Does that change anything about ordering one?
It changes the sourcing, not the repair. The board is listed as no longer available from the manufacturer with no factory substitute offered, so new stock is scarce and what does appear is often inventory that has sat on a shelf for years. A restored genuine board is now one of the few practical routes to keeping one of these refrigerators running. It also means there is no newer revision to step up to, so the number on your label is the number you need.
Do I need to program or configure the board after fitting it?
For a like-for-like swap, no configuration step is normally involved. Boards in this family do carry service connectors that a technician can use with the manufacturer's own equipment, typically in the context of compressor work rather than a straight board replacement, and that is not something to attempt with generic tools. If your unit has had a compressor changed, or a technician has told you a firmware step is needed, have them handle it, and bear in mind that a board that has been altered is generally not returnable.
Where Can I Learn More About Refrigerator Control Boards?
These Appliance Pro USA Help Center guides cover what a refrigerator control board does, why control boards fail, how to identify the right board from its part number, and what to check when an appliance does not work immediately after a board replacement. They support the EBR65640204 diagnosis and installation steps on this page.
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