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Error code reference
Samsung Dryer Error Code AC4
Communication error between WIFI PBA and MAIN PBA.
SourceSamsung DV22N6800/6850 Clothes Dryer - Service Manualp. 25
Diagnostic procedure
The full AC4 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
Remove the WIFI Module and check for any faulty soldering; occurs on line test mode which cannot enter if dry procedure has been completed.
SourceSamsung DV22N6800/6850 Clothes Dryer - Service Manualp. 25
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
1 manual in the MyPros+ library documents this code for Samsung dryer.
Models covered by the manuals that document this code
75,000+ service documents · 20,000+ error codes · 100+ brands
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