Samsung AC026NNNDKH Service Manual

Also see for AC026MXADKH: Installation manual Service manual

Contents

4-14Samsung Electronics4-2-4 Wired remote controller- If an error occurs, ( ) icon will be displayed on the wired remote controller.- Press the Test button to see the error code.Error mode Contents MeasureProduct operation inerror conditionError typeOutdoor unit/Compressor/IndoorunitIndoor unit communication errorCheck the communication cable of indoorunit. Check the DC output voltage at thecommunication terminalOperation Off CommunicationerrorIndoor unit/outdoor unitcommunication time-out error: errorsin more than 6 packetsCheck the outdoor communication cableconnection. Check DC output voltage and thecommunication terminalOperation Off CommunicationerrorIndoor temperature sensor (open/short error)Check indoor unit room temperature sensor.Check indoor unit PCB connector CN41 (White) Operation Off Indoor sensorerrorIndoor unit Eva In sensor (Open/Short) Check indoor unit pipe sensor. Check indoor PCBconnector CN41(White) Operation Off Indoor sensorerrorIndoor unit Eva In sensordisconnectionCheck the disconnection of indoor unit pipesensor Operation Off Indoor sensorerrorRemocon Option for MDS is set for ON,but MDS kit is disconnected or thesignals for sensors are abnormal.Check the wire connectionCheck the MDS kitCheck the main PBANormal operation(without MDS kit) MDS kit ErrorIndoor floating switch secondarydetectionCheck indoor unit float sensor. Check indoor PCBconnector CN5 (black) Operation Off Self diagnosticerrorIndoor/outdoor communication error(1 min)Check the communication connection betweenindoor and outdoor units. Check the power lineand communication cable connection statusOperation Off CommunicationerrorCommunication error betweenindoor/outdoor INV↔MAIN MICOM (1min)Check MAIN MICOMCheck INVERTER MICOM - CommunicationerrorOutdoor temperature sensor errorCheck sensor connection statusCheck sensor locationCheck sensor resistanceOperation Off Outdoor sensorerrorCOND temperature sensor errorCheck sensor connection statusCheck sensor locationCheck sensor resistanceOperation Off Outdoor sensorerror[Inverter] Emission temperature sensorerrorCheck sensor connection statusCheck sensor locationCheck sensor resistanceOperation Off Outdoor sensorerrorEmission temperature excessively high No error (DISCHARGE temperature control) -Outdoor unitprotectioncontrol errorHeating operation blocked Check the operation setting stateCheck temperature sensor Operation Off Self diagnosticerrorCooling operation blocked Check the operation setting stateCheck temperature sensor Operation Off Self diagnosticerrorOutdoor fan 1 errorCheck input power connection statusCheck the connection status between the motorand outdoor unit PCBCheck indoor/outdoor fuseOperation Off Self diagnosticerror[Inverter] Compressor startup errorCheck the compressor connection statusCheck the resistance between difference phasesof the compressorOperation OffOutdoor unitprotectioncontrol error[Inverter] Total current error/PFC overcurrent errorCheck the input powerCheck the coolant charging statusCheck the normal operation of outdoor fanOperation OffOutdoor unitprotectioncontrol error