Samsung MH026FNCA Service Manual

Also see for MH026FECA: Service manual

Samsung Electronics9-12YesError code starts in '' ''Consult error code tableYesError code starts in '' ''.Error code consists of 4 digits and displays first 2digit and last 2 digit alternatively.Consult error code tableConsult error code(Next Page)OK : over 180KΩNo GoodOK : 207-253V(50Hz)OK : 207-253VYesNoYesOk9-3 Fault Diagnosis by Symptom9-3-1 Basic Check FlowPreparation : multimeter (AC voltage, DC voltage, Resistance)Detach cable cover of the terminal blocks(HANDLE CABI RH) on outdoor unit.Check resistance value betweenL and N of Main power terminal block.• Outdoor unit controller (see 12-3-2)• Indoor unit controller (see 12-3-3)No Good • Power cable (see 12-3-4, 12-2)• BreakerNo GoodNoTerminal block wiringNo • Main PCB,• Display PCB,• wiring between PCBs.• Remote control• Remote control battery• Infrared signal receiving path(front panel duct, infrared receiving module, wiring)No • Indoor unit,• Wiring cable to outdoor unitNo Good Starting by remocon or ON/OFF switch on the indoorunit or K2 button on the Outdoor PCB display.Apply the powerCheck AC voltage between L and N ofMAIN power terminal block.Check AC voltage between L and N ofpower terminal block for indoor unit.Is there any display of LED?Start operationAny Error code on LED display?Wait for 5 minutes to check errorcode because some error judgementneeds long time.Receiving of remote control signal ?(Check by buzzer sound)Check operation ON/OFF by the buttonat lower right of the display module(By buzzer sound and LED display)Any Error code on LED display?Wait for 5 minutes to check error codebecause some error judgementneeds long timeCheck Major parts(See 12-5)START Check pointShort checkfor safetyPower SourcecheckOutdoor unitIndoor unit