Air Conditioner Samsung Updated Jul 8, 2026

Samsung AC E102 Error — Outdoor Communication Fault Solved

E102 Samsung · Air ConditionerE102 on a Samsung AC means faulty communication at the outdoor unit — commonly a loose con…

Quick answer

E102 on a Samsung AC means faulty communication at the outdoor unit — commonly a loose connection between indoor and outdoor units.

What does the E102 code mean?

Where E101 flags the indoor side, E102 points to failed signal transmission at the outdoor unit. Check for a loose connection or damaged interconnecting cable around the outdoor unit.

Common causes

Loose outdoor terminal connection
Corrosion, insects or moisture on outdoor terminals
Damaged interconnecting cable
Outdoor PCB fault

How to fix the E102 error

Power off

Isolate at the breaker.

Open the outdoor terminals

Remove the cover and inspect the signal and power terminals.

Reseat wiring

Reconnect loose wires; look for corrosion or moisture.

Check the cable

Confirm the interconnecting cable is intact and correctly landed.

Restore power

If E102 continues, the outdoor PCB may be at fault.

Safety first: Outdoor terminals carry mains voltage. If unsure, or if the PCB is suspected, contact an authorised Samsung service centre.

Frequently asked questions

Can weather cause E102?

Yes — moisture, insects or corrosion on outdoor terminals commonly trigger it.

Written by

REZAUL Karim (Riad)

REZAUL Karim (Riad) is the founder of ErrFixHub and a hands-on electronics and home-appliance repair specialist with over 15 years of experience diagnosing and fixing air conditioners, washing machines, refrigerators, inverters and other household appliances. He built ErrFixHub to turn cryptic error codes into clear, step-by-step fixes anyone can follow — cross-checking every code against manufacturer documentation and real repair-bench experience.