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Error code reference
Samsung Air Conditioner Error Code EC
Wired remote controller communication error (displayed on outdoor unit PCB 7-segment).
SourceSamsung Duct Type Air Conditioner - Service Manual (DH44ZA1 Series)p. 4-3, 4-4
Diagnostic procedure
The full EC 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 wired remote controller cables and wired remote controller; check main/sub PCB of indoor unit.
SourceSamsung Duct Type Air Conditioner - Service Manual (DH44ZA1 Series)p. 4-3, 4-4
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
6 manuals in the MyPros+ library document this code for Samsung air conditioner.
Models covered by the manuals that document this code
75,000+ service documents · 20,000+ error codes · 100+ brands
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