Error code reference

LG Cooktop Error Code F4

Right front top thermistor fault.

SourceLG Induction Cooktop LCE30845 - Training Manualp. 38

Diagnostic procedure

The full F4 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check CN 04 (Right Module); thermistor should read 500~550 K ohms at room temperature.

SourceLG Induction Cooktop LCE30845 - Training Manualp. 38

More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock F4 procedure $9.95

Or subscribe: $29/month for all codes plus Max diagnostics, with 70 Max messages a day. Plus applicable tax.

Where this code is documented

4 manuals in the MyPros+ library document this code for LG cooktop.

Models covered by the manuals that document this code

75,000+ service documents · 20,000+ error codes · 100+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass · Plus applicable tax