EBR84433501 LG Refrigerator Main Control Board, the LMXS30776 Assembly Chosen by Your Production Run Rather Than Your Model Name
Part EBR84433501 is the LG main printed circuit assembly documented against the 30 cubic foot four door LMXS30776 refrigerator, sold in the United States as the LMXS30776S and LMXS30776D and outside it under the GR-J31GHSJM designation. Independent parts records catalogue it as PCB Assembly Main and describe it as the refrigerator main control board: the assembly that reads compartment temperatures, calls for cooling, schedules defrost and runs the fans.
One thing separates this number from most LG boards, and it is worth knowing before you order. The LMXS30776 cabinet does not take one assembly across its whole production life. Records place this board on the earlier runs and a different, also currently supplied assembly on the later ones. Two refrigerators carrying the same badge can therefore need different boards, and nothing on the front of the appliance tells you which you have. The characters after your model number do, and so does the label already fitted.
What Does a Failing EBR84433501 Look Like From the Kitchen?
A failing EBR84433501 usually shows up as a four door LMXS30776 refrigerator that keeps its lights and its panel but stops holding temperature, or one that goes quiet at the machine compartment and never restarts. Because this assembly commands cooling, defrost timing, the fans, the convertible drawer and the ice and water path, faults here rarely stay in one compartment. Complaints appearing in several unrelated places within a short period are the pattern most consistent with the board.
This assembly is where the refrigerator makes its decisions. Sensors report into it, cooling calls leave it, and its outputs drive the compressor circuit, the fans, the defrost heater and the ice hardware. A four door cabinet gives one board an unusually wide brief, which is why so many complaints get attributed to it, and why many of those attributions are wrong.
- Both food compartments drifting warm over days while the control panel stays lit and accepts input
- Frost sheeting the back of the freezer compartment, with airflow dropping off as it builds
- The machine compartment silent, or audibly attempting a start and giving up on a repeating cycle
- The convertible middle drawer refusing to hold the temperature band it has been set to
- Ice production stopping while water still dispenses normally and the rest of the cabinet is fine
- Several systems degrading together over a fortnight rather than one failing cleanly on its own
- Panel readouts appearing, clearing and returning without any change in how the appliance runs
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Why Does the Production Run Behind Your Model Number Decide Which Board You Need?
Because the LMXS30776 cabinet is documented against two different main assemblies, divided by when it was built. Parts records place EBR84433501 on the earlier runs of the LMXS30776D and LMXS30776S and a separate assembly on the later ones, and both are still obtainable. The badge is identical either way, so the run characters following your model number, and the label already fitted, are the only things that settle it.
Most fitment mistakes on LG boards come from trusting a model name that is doing less work than it appears to. Here one badge covers cabinets taking assemblies with no reference numbers in common, so ordering by badge alone is a coin flip. Because both candidates are genuine and currently supplied, nothing will look wrong until the refrigerator refuses to behave. The video below shows where the applied label sits and how to read it.
The video above shows where the applied label sits on an appliance control board and how to read it before packaging is opened. On this cabinet, read the whole eleven character string and then read your model plate for the run characters that follow the model code.
Which Complaints Point at Cabinet Logic and Which Point at Hardware?
Complaints that cross compartment boundaries, or arrive together across unrelated systems, are the ones consistent with the main assembly. Complaints confined to one subsystem, such as ice production alone or defrost alone, usually belong to that subsystem's own hardware. The table below sorts the common LMXS30776 presentations into those groups and gives the test that separates them.
Treat every row as a direction to test in, never as a verdict. This cabinet gives one assembly authority over two food compartments, a convertible drawer, an ice system and a through door water path, so complaints starting in five places arrive at the same suspect far more often than the evidence supports.
| Symptom | What It May Indicate | Recommended Next Step | Board? |
|---|---|---|---|
| Every compartment slowly warming while the panel stays lit and responsive | Cooling is being requested and not produced, or was never requested | Watch each evaporator fan attempt to start, then read every thermistor at its plug. An assembly handed impossible readings behaves indistinguishably from one that has stopped deciding. | Common |
| Freezer back wall packed with ice, airflow falling away as it thickens | The defrost cycle is not completing, or its heating path has opened | Put a meter across the defrost heater, the thermal fuse and the defrost sensor before considering an assembly. Timing is what the board contributes; three low cost parts have to survive for the cycle to finish. | Defrost parts first |
| Ice stops while water dispenses and both food compartments hold temperature | The ice maker, its fill valve, or the ice compartment's own hardware | Confirm the ice compartment is reaching its temperature and the water path is clear. A single dead subsystem on a refrigerator that is otherwise healthy is almost always a local story. | Ice hardware |
| The convertible middle drawer alone will not hold its selected band | That drawer's own sensor, damper or heater circuit rather than cabinet logic | Compare the drawer against the two main compartments over a full day. If those two are steady and only the drawer wanders, test the drawer's own hardware before anything upstream of it. | Drawer hardware |
| Cooling, defrost and ice all deteriorating inside the same fortnight | A shared point of command rather than three coincidences | When unrelated systems slip together, what they have in common becomes the leading candidate. Clear the sensors and fans, then weigh the assembly seriously. | Board-related |
Which Panel Readouts Describe the Board, and Which Describe What It Watches?
Almost every readout an LG refrigerator produces names a circuit the main assembly is monitoring, not the assembly itself. Sensor and fan reports point at that sensor or fan first. Reports of lost communication between the door panel and cabinet logic, and cabinets that run wrong while displaying nothing, are the two categories that genuinely implicate the board. Published meanings differ between series and revisions, so confirm yours in your own documentation.
That distinction is the most useful thing to carry into any code lookup. A refrigerator cannot report which component has failed. It reports which measurement fell outside the expected range, and the assembly doing the reporting is usually the one still working. The table below groups what these cabinets report by circuit rather than by literal string, because the strings are not stable across the platform.
| What the display reports | Circuit being described | Where to look first |
|---|---|---|
| Lost communication between the door panel and cabinet logic | The link joining the display assembly to the main assembly | The hinge harness that flexes every time a door opens, then the connectors at either end. Genuinely board related once the loom is proven. |
| A compartment temperature sensor reading out of range | A thermistor in the freezer, fresh food or convertible drawer | The sensor and its plug. A sensor report is a sensor report until the sensor itself has been cleared. |
| Defrost did not complete inside its expected window | The defrost heater, thermal fuse and defrost sensor together | Continuity across the heating path. The assembly schedules the cycle; the hardware has to carry it out. |
| A fan not confirming that it is turning | An evaporator or condenser fan and its feedback line | Turn the blade by hand for ice contact or bearing drag, then inspect the fan's own wiring before anything upstream. |
| A sealed system or refrigerant condition reported | The refrigeration circuit, not an electronic assembly | Stop and book a qualified technician. Nothing here is resolved by fitting a board. |
| Nothing displayed at all, yet the cabinet behaves incorrectly | No fault raised, which is itself informative | A refrigerator with power and no output, raising nothing, is among the stronger arguments for the assembly once supply and sensors are proven. |
What Has to Be Cleared Before an EBR84433501 Is Worth Buying?
Four things, in order: the run characters on your model plate and the label on the fitted board, every compartment thermistor, the defrost heating path, and the fans. A fifth matters as much on this platform, which is separating the compressor and sealed system from cabinet logic before spending anything, because coverage there is often longer than on the rest of the appliance. An assembly bought before those are cleared usually changes nothing.
This check is specific to this number rather than to refrigerators in general. The LMXS30776 badge covers cabinets documented against two assemblies, split by production run, and both remain obtainable. The model plate and applied label together answer what the badge alone cannot.
A four door cabinet carries sensors in the freezer, the fresh food section, the convertible drawer and the ice compartment. Any one reporting a temperature the cabinet is not actually at will drive the assembly into behaviour that reads exactly like a failure of the assembly itself.
Heavy frost behind the rear freezer panel is a defrost complaint, and defrost depends on three inexpensive parts completing a cycle the assembly only schedules. If any of them has opened, a new board schedules a cycle that still cannot happen.
A refrigerator that runs continuously and only slowly warms is describing the refrigeration circuit rather than cabinet logic. This matters commercially as well as diagnostically, because published specification material for LG refrigerators of this generation commonly records longer manufacturer coverage on the compressor and sealed system than on the balance of the appliance.
How Much Work Is an EBR84433501 Swap on a Four Door Cabinet?
The replacement itself is straightforward: the assembly sits behind a rear access cover, held by a few screws, with harnesses that release at their latches. Most of the effort on a 30 cubic foot cabinet is in moving the appliance far enough forward to work behind it. Budget around half an hour for the work and longer for the verification that should come before it.
Nothing about the mechanics is demanding. A handful of screws, harnesses released at their latches rather than pulled by their wires, and an assembly that lifts off its standoffs. Worth planning for: floor protection, help walking a loaded cabinet away from the wall, and a photograph of every connector before the first one comes off.
Does the EBR84433501 Fit Your LG Refrigerator?
Documented fitment for EBR84433501 covers the LMXS30776D and LMXS30776S four door refrigerators on their earlier recorded runs, together with the GR-J31GHSJM export designation. Later runs of those same codes are documented against a different assembly. Enter your model code below to check it against our records, then confirm by matching the label already fitted, which is the only check that settles the run question.
Model Number Check
Enter your refrigerator's model number to check it against our EBR84433501 compatibility records. Include the run characters if your plate shows them, since on this cabinet they decide the answer.
All eleven characters of the assembly number appear together in one place, on the applied label. Since this cabinet is documented against two assemblies depending on when it was built, and both remain obtainable, reading that label is not a formality here. It is the check. Click to zoom in.
Which LG Models Are Documented Against the EBR84433501?
Two United States model codes and one export designation appear in the records we consulted: LMXS30776D, LMXS30776S and GR-J31GHSJM, all on earlier runs of that cabinet. Two independent sources agree on this list, using two notations for the same runs. Some retailers describe brand coverage as LG and Kenmore, but no Kenmore model code appeared in any record we reached, so none is listed here.
Documented Fitment, Confirm Against Your Label
Three points deserve attention. First, the two catalogues we consulted write the run two different ways for the same refrigerator, one appending a slash and two digits to the model code and the other a longer destination string ending in a digit, and across both boards those trailing digits line up consistently. Second, later runs of these identical model codes are documented against a separate assembly with an entirely different set of reference numbers, so the model code alone does not finish the job. Third, several runs of the LMXS30776 appear in model listings without being attributed to either assembly in anything we could verify, which is why the label on your own board outranks any list, this one included.
How Is the EBR84433501 Restored to Spec? The FailSafe Precision Protocol
Every EBR84433501 supplied by Appliance Pro USA is a genuine OEM LG assembly restored through the FailSafe Precision Protocol, a four stage process built around the failure patterns recorded for this specific board. Known weak point components are replaced proactively with equal or higher rated parts rather than only when they test faulty, and each assembly is certified to meet or exceed original LG factory specifications before it ships.
FailSafe Precision Protocol
Failure Pattern Analysis
Known failure patterns for the EBR84433501 are mapped before any work starts, so the process targets what actually fails on this assembly.
Precision Diagnostic Testing
Multi-point diagnostic testing identifies faults and confirms which circuits on the assembly need attention.
Proactive Component Replacement
Components identified through failure pattern analysis are replaced with equal or higher rated parts, whether or not they have failed yet.
Final Certification
Certified to meet or exceed original LG factory specifications. Minor cosmetic wear from prior service may be present and does not affect function.
EBR84433501 Specifications: Which Cross-Reference Numbers Match This Board?
EBR84433501 is catalogued as PCB Assembly Main and cross referenced to AP6336473, PS12581460 and EAP12581460, with an internal LG reference in the 4878 series. Its supersession status is the unusual part: four catalogue records tell four different stories about which numbers precede or follow it, while all of them continue to supply EBR84433501 itself. The table below records what each identifier is supported by.
| Manufacturer part number | EBR84433501. Catalogued through LG parts channels as PCB Assembly Main, and described in independent parts records as the refrigerator main control board |
| Board type | Main control board. Four separate parts records describe it in those terms. It is not a display assembly, not an ice maker board, and not a compressor inverter module |
| What it controls | Thermistor inputs, cooling calls and compressor operation, evaporator and condenser fans, defrost scheduling, the convertible drawer, the ice compartment and water path, and communication with the door panel |
| Cabinet served | LG's 30 cubic foot four door French door platform, sold in the United States as the LMXS30776 in two finishes and outside it as the GR-J31GHSJM, on the earlier recorded runs of that cabinet |
| Cross references | AP6336473 appears against this number in two independent records, with PS12581460 and EAP12581460 as its matching pair, plus an internal LG reference in the 4878 series and various vendor stock codes. Whichever number you shop by, match the applied label before ordering |
| Supersession status | Genuinely contested, and we will not pretend otherwise. A parts database treats EBR84433501 as a previous number changed to a board in the EBR786434 series. A repair retailer states the exact opposite. A large retailer names a different predecessor entirely, in the EBR844335 series. A fourth source records no supersession in either direction. See the note below this table |
| What all sources agree on | EBR84433501 is currently supplied under its own identity and can be bought today. That is what actually governs your decision, and it holds across every record we consulted whichever chain that record believes in |
| The other assembly for this cabinet | Later runs of the same LMXS30776 model codes are documented against a separate main assembly with a completely different AP, PS and EAP set sharing no digits with this one. Two independent sources agree on that split. Sharing the first nine characters proves nothing about fitment |
| Brand coverage | LG. Two retailers describe coverage as LG and Kenmore, but no Kenmore model code appeared in any record we could reach, so none is claimed here |
| APU status | FailSafe Certified, 1-year warranty (registration required), same-day shipping* |
A word on that supersession row, because it is the most confusing thing about this number and the confusion is not yours. When four catalogues describe four different chains around one part, the sensible response is not to pick a favourite. It is to notice what none of them dispute: this number is supplied, and it is documented against specific runs of a specific cabinet. Buy against the label and the run rather than against a chain, and the disagreement cannot reach you. If a supplier routes you to a different number than the one on your board, ask which record they are working from first.
Is an EBR84433501 the Right Spend on a 30 Cubic Foot Four Door Cabinet?
On a large four door refrigerator, replacing the main assembly is normally far cheaper than replacing the appliance and usually cheaper than a technician visit ending in the same part. That holds only once the sensors, fans, defrost hardware and compressor side are cleared, and once you have confirmed which of the two documented assemblies your run takes.
What your options typically cost
What Goes Wrong After a Correct Board Has Been Fitted?
The most common outcome is that the assembly was never the fault, and a sensor, fan or defrost component that was skipped is still faulty. The second is a fitment error created by the production run split on this cabinet. The third is impatience, since a 30 cubic foot refrigerator emptied of cold takes many hours to recover and looks like a failed repair for most of that time, so leave the doors shut and wait before judging.
Check the run characters, not just the model code
This is the mistake specific to the LMXS30776. Two assemblies are documented against these model codes, divided by production run, and both are genuine and currently supplied. If the board you fitted came from a model code lookup rather than from your own board's label, go back and read that label now.
Go back to the sensors before blaming the replacement
A thermistor reporting a temperature the cabinet is not at makes a healthy new assembly behave exactly like the one you removed. If the symptom survived the swap unchanged, the sensors are the first place to return to, not the second.
Return every harness to the header it came from
Adjacent connectors on these assemblies are often physically similar enough to seat in the wrong place. This is why the photograph taken before the first plug came off matters more than any other step in the job. Work back through it connector by connector.
Do not accept a substitute number without asking why
Given how much the catalogues disagree around this part, a supplier offering you a different number is not automatically wrong, but they should be able to say which record they are working from. Ask, and match against your label before agreeing.
Still not working after all of the above?
Contact our team before returning anything. Most of what reaches us as a faulty board turns out to be a connector, a sensor or a run mismatch, and all three are quicker to solve with us than through a return.
Which Cheaper Parts on This Cabinet Imitate a Board Fault?
Compartment thermistors, the defrost heater and thermal fuse, the fan motors, the ice section hardware and the door harness all produce complaints that look like main assembly failure and all cost considerably less. Confirm part numbers against your own full model code before ordering, since they vary by cabinet.
Share your model number and a photo of your board's label. Our team will confirm the right part before you spend a dollar. No pressure, no obligation.
Why Buy the EBR84433501 from Appliance Pro USA?
Appliance Pro USA supplies the EBR84433501 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.
There is a second reason to buy this number from a team that will talk to you first. The published records around EBR84433501 disagree with each other, and the cabinet it serves takes two different assemblies depending on when it was built. We would rather spend five minutes on your label and model plate than process a return, so send us both and we will tell you which assembly your cabinet is documented to take.
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 label and we'll confirm before you buy. Reach us at info@applianceprousa.com
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EBR84433501 LG Refrigerator Main Control Board, Frequently Asked Questions
The questions below cover what buyers of this number actually ask us: how to tell which of the two documented assemblies a given LMXS30776 takes, why the published supersession records contradict one another, which cross reference numbers belong to this board, and how to separate a genuine board fault from the cheaper causes that imitate one.
My model is an LMXS30776S. Is this definitely my board?
Not on the model code alone, and this is the most important thing on the page. Records document EBR84433501 against the earlier production runs of the LMXS30776S and LMXS30776D, and a different assembly against the later runs of those same codes. Both are genuine and both are supplied today. Your rating plate carries characters after the model code, written as a slash and two digits or as a longer destination string, and those divide the two. Read them, then read the label on the fitted board.
Why do different websites give different answers about what this part replaces?
Because they genuinely disagree, and we would rather say so than smooth it over. Of the four records we consulted, the first treats this number as an older reference changed to a board in the EBR786434 series, the second states the reverse, the third names a different predecessor in the EBR844335 series, and the fourth records no chain at all. We will not guess between them. All four agree EBR84433501 is currently supplied under its own number, which is the only part your purchase depends on.
My model code starts with GR-J31GHSJM rather than LMXS. Is that the same refrigerator?
It is the same cabinet under an export designation, and it appears in the published fitment for this number alongside the United States codes. Those entries end the designation with a destination string ending in a digit, and that digit tracks the production run exactly as the slash digits do on the domestic codes. The earlier run sits with this assembly and the later ones with the other, so the designation does not remove the run question. It only writes it differently.
Which AP and PS numbers belong to this board?
AP6336473 is recorded against EBR84433501 in more than one independent record, with PS12581460 and EAP12581460 as its matching pair, plus an internal LG reference in the 4878 series. One caution: at least one database lists identifiers for this board and a neighbouring one under a single merged heading, so an AP or PS number from a search result can land you on either. Treat them as a supporting check on the label, not a substitute for it.
Is the EBR84433501 discontinued?
No. Every record we consulted still lists it, several showing it available for immediate despatch. That is worth stating because some of its neighbours are in a worse position, including one number in the wider family recorded as no longer produced with no substitute at all. Availability is the one area where the sources are unanimous, and it works in your favour.
A listing said this board also fits Kenmore refrigerators. Should I trust that?
Not without a model code to check. Two retailers describe brand coverage as LG and Kenmore, but neither of them, nor any record we reached, produced a Kenmore model number to go with the claim. Some LG built cabinets were sold under Kenmore badges, so it is not impossible, simply unverified. That is why no Kenmore code appears in our fitment list. If you have one alongside a board labelled EBR84433501, send us both.
My four door refrigerator is running constantly but only just staying cool. Is that this board?
That points away from cabinet logic rather than towards it. A failed assembly usually stops asking for cooling or stops delivering it, rather than asking correctly and getting a weak result. Continuous running with poor performance describes a refrigeration circuit that is working and not achieving much, which means the condenser, the fans and the sealed system. Check the coil for blockage and the fans for free rotation, then find your paperwork, because sealed system coverage is often longer than the general warranty.
Which Help Center Articles Support This Repair?
The Appliance Pro USA Help Center articles below sit alongside this guide. Between them they cover lifting a part number off a board, what a refrigerator's central assembly is answerable for, what shortens a board's life, and what to check when a new board changes nothing.
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