Model reference

Samsung FH052EZMC

Air Conditioner

9 documents21 error codes4 service modes

Available documentation

Service Manual

LG Samsung FH052EZMC Disassembly & Reassembly11 pg
Covers this model
LG Samsung FH052EZMC Troubleshooting10 pg
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Alignment and Adjustments6 pg
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Wiring Diagram

PCB Diagram4 pg
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Block Diagram2 pg
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Quick Reference

LG Samsung FH052EZMC Reference Information10 pg
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Installation Guide

LG Samsung FH052EZMC Operation Instruction & Installation4 pg
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LG Samsung FH052EZMC Precaution2 pg
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Other

LG Samsung FH052EZMC Cover3 pg
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E1 on my Samsung FH052EZMC

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Communication error when there is no

From Service Manual 718422, p.34:

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 (21)

CodeMeaning

E1Communication error when there is no signal from outdoor unit to wired remote…E2Communication error when there is no answer from wired remote controller to…E3Error of setting option switches for optional accessories / Error of setting…E5Mismatching of the indoor unit numbers set with those communicating after…G4Close error of electronic expansion valve in outdoor unit (detected once or…G5Error of electronic expansion valve open in outdoor unit (detected more than…K1Below -5°C outdoor temperature when cooling (operating status display…K2Over 30°C outdoor temperature when heating (operating status display…P0Compressor down due to protection control of the discharge temperature (high…P1High temperature of outdoor heat exchanger / Control due to the condenser…P4Compressor down to protect being frozen / Error of the low pressure switch…P5Reverse phase error (protection control).P9Error of momentary power failure (disappears when the unit is Off/On).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 discharge temperature sensor (OPEN/SHORT).t2Error of outdoor temperature sensor (OPEN/SHORT).t3Error of condenser/outdoor heat exchanger temperature sensor (OPEN/SHORT).toIn removing frost (defrost operation indicator).tuIndoor unit float switch error.vxEEPROM option error in indoor unit (x = indoor unit address).

Service modes (4)

Outdoor data display (sensor check)Press K4 on outdoor unit PCB
Reset / Re-trackingPress the reset key K3 on outdoor unit PCB to re-perform the tracking process.
Test operationPress K2 on outdoor unit PCB to perform test operation.
Tracking process (communication diagnostic)Observe outdoor unit display DS1

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

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