LG CBGU3639
✓ VERIFIEDCooktop2025
What We Know
The CBGU3639 is a 36-inch LG gas cooktop. It also has ThinQ, app control from your phone. Sold in 2025.
Status
Currently Sold
Years Sold
On sale in 2025
Width
36 in
Height
3.75 in
Depth
21 in
Voltage
120 Volt, 60 Hertz, properly grounded dedicated circuit protected by a 15 A or
Amperage
15 A or 20 A
Power connection
Power Cord Supplied
Gas as shipped
Natural Gas
Gas supply
Flare union adapter for connection to gas supply line (3/4” or 1/2” NPT x 5/8” I.D.)
Wi-Fi
Yes · ThinQ
Parts & Labor
1 year parts and labor
1 year internal/functional parts and labor
Burners
5
Surface
Sealed gas burners
Warming Zone
EasyClean®
UltraHeat™
ThinQ®
LG's app: start cycles, get alerts, and run diagnostics from your phone.
Recalls
None on file
verified Sep 2026
Written from the record's fields, not from reviews. Covers the CBGU3639 generation (CBGU3639X) only. A single year means the model was documented on sale that year; the full sales span was not established. Sources: LG product page · LG warranty
Expected Lifespan
15–17 years
ApplianceEdge estimate · LG electric cooktop
Parts & Labor
1 year parts and labor
1 year internal/functional parts and labor
Spec Sheet
ajmadison.com
Warranty Statement
lg.com
Expected lifespan is ApplianceEdge's estimate, formed from category lifetime data, service records and warranty terms. It is not a prediction for your unit and not a manufacturer figure — with proper care and maintenance, many appliances last well beyond this range. Everything else on this tab is written from the record's fields. Sources: LG spec sheet · LG warranty
What to Expect
LG runs its own factory service in most major metros, with authorized local servicers everywhere else. Genuine parts go through Encompass Parts Distribution and LG's own store, so independents can get them. Full warranty terms are in Owning It.
Recalls
None on file
verified Sep 2026
Known Issues
None on file
verified Sep 2026
Factory Service
lg.com
Authorized Servicers
lg.com
No code matches
Meaning
Sabbath Mode
What to do
Follow LG’s Clock-button Sabbath Mode steps; service if unresolved.
5b · Sb
Sabbath Mode
Follow LG’s Clock-button Sabbath Mode steps; service if unresolved.
Meaning
Object on button or press longer than nine seconds
What to do
Clean touch button and press Power; request inspection if unresponsive.
E · E1
Object on button or press longer than nine seconds
Clean touch button and press Power; request inspection if unresponsive.
Meaning
upper oven thermistor error
What to do
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
F1 · F2
upper oven thermistor error
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
Meaning
touchpad key sensor error
What to do
reset breaker for 30 seconds; service if persistent.
F3
touchpad key sensor error
reset breaker for 30 seconds; service if persistent.
Meaning
lower oven thermistor error
What to do
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
F4 · F5
lower oven thermistor error
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
Meaning
upper oven heating error
What to do
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
F6 · F9
upper oven heating error
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
Meaning
upper convection fan error
What to do
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
F7
upper convection fan error
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
Meaning
oven meat probe error
What to do
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
F8 · F18
oven meat probe error
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
Meaning
upper oven door lock error
What to do
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
F10
upper oven door lock error
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
Meaning
communication error
What to do
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
F11
communication error
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
Meaning
oven sensor error
What to do
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
F16
oven sensor error
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
Meaning
convection fan error
What to do
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
F17
convection fan error
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
Meaning
oven heating error
What to do
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
F19
oven heating error
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
Meaning
lower oven door lock error
What to do
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
F20
lower oven door lock error
Clear/Off and retry; reset breaker for 30 seconds; service if persistent.
Meaning
steam sensor error
What to do
reset breaker for 30 seconds; service if persistent.
F21 · F22 · F24 · F25
steam sensor error
reset breaker for 30 seconds; service if persistent.
Meaning
cooling fan error
What to do
reset breaker for 30 seconds; service if persistent.
F27
cooling fan error
reset breaker for 30 seconds; service if persistent.
Meaning
front induction temperature sensor error
What to do
reset breaker for 30 seconds; service if persistent.
F33 · F34
front induction temperature sensor error
reset breaker for 30 seconds; service if persistent.
Meaning
transistor error
What to do
reset breaker for 30 seconds; service if persistent.
F36
transistor error
reset breaker for 30 seconds; service if persistent.
Meaning
main board/inverter communication error
What to do
reset breaker for 30 seconds; service if persistent.
F38
main board/inverter communication error
reset breaker for 30 seconds; service if persistent.
Meaning
voltage error
What to do
reset breaker for 30 seconds; service if persistent.
F42
voltage error
reset breaker for 30 seconds; service if persistent.
Meaning
fan error
What to do
reset breaker for 30 seconds; service if persistent.
F45 · F46
fan error
reset breaker for 30 seconds; service if persistent.
Meaning
griddle sensor error
What to do
reset breaker for 30 seconds; service if persistent.
F51
griddle sensor error
reset breaker for 30 seconds; service if persistent.
Meaning
griddle sensor short error
What to do
reset breaker for 30 seconds; service if persistent.
F52
griddle sensor short error
reset breaker for 30 seconds; service if persistent.
Meaning
griddle heating error
What to do
reset breaker for 30 seconds; service if persistent.
F56 · F59
griddle heating error
reset breaker for 30 seconds; service if persistent.
Meaning
sous-vide temperature sensor error
What to do
reset breaker for 30 seconds; service if persistent.
F62
sous-vide temperature sensor error
reset breaker for 30 seconds; service if persistent.
Meaning
sous-vide heating error
What to do
reset breaker for 30 seconds; service if persistent.
F69
sous-vide heating error
reset breaker for 30 seconds; service if persistent.
Meaning
Surface hotter than 150°F
What to do
Let cool; reset if still displayed at room temperature; service if persistent.
H5
Surface hotter than 150°F
Let cool; reset if still displayed at room temperature; service if persistent.
Meaning
thermistor fault
What to do
Power On/Off; breaker reset 30 seconds; service if persistent.
LED pattern 1 (red segments) · LED pattern 2 (red segments) · LED pattern 3 (red segments)
thermistor fault
Power On/Off; breaker reset 30 seconds; service if persistent.
Meaning
prolonged water/metal contact
What to do
Remove objects/water; Power On/Off; breaker reset 30 seconds; service if persistent.
LED pattern 4 (red segments)
prolonged water/metal contact
Remove objects/water; Power On/Off; breaker reset 30 seconds; service if persistent.
Meaning
display error
What to do
Power On/Off; breaker reset 30 seconds; service if persistent.
LED pattern 5 (red segments)
display error
Power On/Off; breaker reset 30 seconds; service if persistent.
Meaning
low voltage
What to do
Contact a qualified electrician.
LED pattern 6 (red segments)
low voltage
Contact a qualified electrician.
Meaning
Power interrupted
What to do
Clear/Off; retry; breaker reset 30 seconds; service if persistent.
PF
Power interrupted
Clear/Off; retry; breaker reset 30 seconds; service if persistent.
Repair
What’s involved
DIY
Parts
Labor
Parts
Radiant surface element
$60–$215
Element receptacle / wire kit
$15–$30
Infinite switch
$45–$105
Labor
$150–$325
One cooking zone will not heat
Radiant surface element
$60–$215
Element receptacle / wire kit
$15–$30
Infinite switch
$45–$105
$150–$325
Parts
Infinite switch
$45–$105
Radiant surface element
$60–$215
Main / surface control board
$280–$295
Labor
$150–$425
Zone stays on high or will not regulate temperature
Infinite switch
$45–$105
Radiant surface element
$60–$215
Main / surface control board
$280–$295
$150–$425
Parts
Element terminal / receptacle block
$15–$30
Thermal fuse
$40–$45
Main control board
$280–$295
Labor
$150–$425
Cooktop is completely dead
Element terminal / receptacle block
$15–$30
Thermal fuse
$40–$45
Main control board
$280–$295
$150–$425
Parts
Infinite switch
$45–$105
Hot-surface indicator / indicator switch assembly
$15–$50
Labor
$150–$325
Heat cycles erratically or the indicator does not match the zone
Infinite switch
$45–$105
Hot-surface indicator / indicator switch assembly
$15–$50
$150–$325
Parts
Ceramic-glass surface damage
$330–$485
Labor
$250–$425
Glass top is cracked or has a deep chip
Ceramic-glass surface damage
$330–$485
$250–$425
Parts
User-interface / touch-control assembly
$160–$210
Main control board
$280–$295
Labor
$250–$425
Touch controls do not respond or operate by themselves
User-interface / touch-control assembly
$160–$210
Main control board
$280–$295
$250–$425
Parts
Dual / triple radiant element
$180–$280
Infinite / selector switch
$45–$105
Labor
$150–$325
Zone heats slowly or only part of the ring works
Dual / triple radiant element
$180–$280
Infinite / selector switch
$45–$105
$150–$325
Parts
Power terminal block / heat-damaged wiring
$20–$80
Infinite / surface-element control switch
$40–$110
Radiant surface element / limiter assembly
$60–$200
Labor
$150–$425
Cooktop makes a buzzing sound, smells hot, or shows scorch marks
Power terminal block / heat-damaged wiring
$20–$80
Infinite / surface-element control switch
$40–$110
Radiant surface element / limiter assembly
$60–$200
$150–$425
Parts
Control knob
$20–$60
Infinite / surface-element control switch
$40–$110
Labor
$125–$325
Controls are loose, cracked, or hard to turn
Control knob
$20–$60
Infinite / surface-element control switch
$40–$110
$125–$325
Parts
Power terminal block / heat-damaged cooktop wiring
$20–$80
Radiant surface element shorted / leaking to ground
$60–$200
Infinite / surface-element control switch internal fault
$40–$110
Labor
$150–$425
Cooktop repeatedly trips the breaker
Power terminal block / heat-damaged cooktop wiring
$20–$80
Radiant surface element shorted / leaking to ground
$60–$200
Infinite / surface-element control switch internal fault
$40–$110
$150–$425
Easy DIY: basic tools, under an hour. Moderate: some disassembly. Advanced: experience with the machine's internals. Technician: sealed-system, electrical or tub-split work.
Parts prices don’t move much across the country; labor does. If a technician supplies the part, expect 40–50% on top of the part price.
Error codes and known issues come from manufacturer documents and public records, not from reviews. Sources: LG product page
Data You Can Trust
This page draws on the ApplianceEdge Registry — 2,600 appliance families connected to more than 9,400 verified models, independently researched. We don’t know everything about this family yet, and we won’t pretend to: finish records and filter and accessory cross-references for this platform are still being verified. We only publish what we can stand behind, and the gaps close as the Registry grows.
ApplianceEdge assessments — lifespans, repair values, and reliability notes — are our editorial opinions, built from documented third-party sources: owner reports, industry pricing data, manufacturer literature, and official records. They describe patterns across a product family, not any individual machine; your experience may differ. Recall information links directly to official CPSC notices. We accept no payment from manufacturers, and no brand influences what we publish.