Model reference

Samsung UH070EZMC

Air Conditioner

4 documents19 error codes2 service modes

Available documentation

Service Manual

Duct Type Air Conditioner Service Manual66 pg
Covers this model

Wiring Diagram

LG Samsung CH070EZM Wiring Diagrams4 pg
Covers this model
LG Samsung CH070EZM Block Diagrams3 pg
Covers this model
Refrigerating Cycle Diagram2 pg
Covers this model

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E1 on my Samsung UH070EZMC

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Communication error between indoor and

From Service Manual 320331, p.23:

1.Access service mode to confirm the active fault code and read stored error history.

2.Measure door lock assembly resistance across PTC terminals. Expected: ~200 ohms cold.

3.Inspect strike and latch alignment. A misaligned strike prevents the switch stack from closing.

Part DC34-00024B

Door lock assembly

Error codes (19)

CodeMeaning

E1Communication error between indoor and outdoor units during operation (no…E2Tracking error E3Indoor float switch error E5Error of setting option switches for optional accessories.G4Error of electronic expansion valve open in the outdoor unit (detected once or…G5Error of electronic expansion valve close in the outdoor unit (detected once or…P0Compressor down due to protection control of the discharge temperature sensor.P1Control due to the condenser temperature sensor when in cooling mode (high…P4Error of the low pressure switch (protection control).P5Reverse phase error (protection control).P9Compressor down to protect against being frozen.qxOpen/Short error of room sensor in indoor unit (x = indoor unit address).rxOpen/Short error of evaporator sensor in indoor unit (x = indoor unit address).t1Error of outdoor temperature sensor (Open/Short).t2Error of outdoor heat exchanger (condenser) temperature sensor (Open/Short).t3Error of discharge temperature sensor (Open/Short).toError of fan starting in outdoor unit.tuIn removing frost (defrost operation).vxEEPROM option error in indoor unit (x = indoor unit address).

Service modes (2)

Option Setup Mode (Remote Control)["Remove batteries from remote control.","Press the temperature up and down buttons simultaneously…
Outdoor Unit PCB Check/Test Mode["K1 press 1 time

Full entry steps, exit procedures, and test sequences are available in Max.

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