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Error code reference
LG Oven Error Code F-19
Lower oven does not heat: oven temperature does not exceed 150°F/66°C in less than 5 minutes.
SourceLG 30" Electric Convection Built-In Oven - Service Manual (LWD3010ST)p. 8-1
Diagnostic procedure
The full F-19 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 thermostat open/short between DLB Relay L2 connections; check electric wiring and heater resistance.
SourceLG 30" Electric Convection Built-In Oven - Service Manual (LWD3010ST)p. 8-1
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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