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Error code reference
Daewoo Microwave Error Code Err 3
Thermistor circuit fault: thermistor reads open or shorted, or heater circuit failure detected.
SourceDaewoo Microwave Oven - Service Manual: KOC-624Qp. 22
Diagnostic procedure
The full Err 3 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 continuity of thermistor (resistance should be approx 200k-300kΩ at room temperature); if 0Ω or infinite, replace thermistor.
SourceDaewoo Microwave Oven - Service Manual: KOC-624Qp. 22
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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Where this code is documented
2 manuals in the MyPros+ library document this code for Daewoo microwave.
Models covered by the manuals that document this code
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