Samsung NS100HHXEH Service Manual

Also see for NS100HHXEH: User & installation manual Service manual

Samsung Electronics 4-154-6-3 The Outdoor unit Fan error1. Checklist:1) Are the input power voltage and power connection correct?2) Is the motor wire connected to the outdoor PCB correctly?3) Is there no obstacle at the surrounding of motor and propeller?4) Does the driver in the motor case broken?2. Troubleshooting procedure# TEST operation #press K900 button on theMAIN PCB after power on.- once : cooling mode- twice in a second :heating modeExchange INVERTER PCBExchange INVERTER PCBNoYesYesYesNo Check the connection of CN40 and CN41Is the connection of FAN housing certainly toPCB socket?(CN40, CN41)Exchange the FAN motor because of driverinside of the motor case brokenNoTake off each Fan motor housing after 1 minutesfrom turning off the powerFollow the check procedure ofoutdoor unit power supply error checkNoIs each resistance of FAN cable housingpin #1-#3 over 1Mohm, pin #4-#3, #5-#3 and#6-#3 over 1Kohm on each FAN motor?Mount each Fan housing to PCB socket andturn on the powerExchange INVERTER PCBNoIs the Pin voltage #1 - #3 of CN40 and 41over 250V?Exchange the FAN motor not in rotationNoExchange INVERTER PCBYesExchange the FAN motorNoYesYesYesNoIs the Pin voltage #5 - #3 of CN40 and 41 15V?Is the Pin voltage #5 - #3 of CN40 and 41within 1-6V during the operation?Is the Fan in rotation duringTEST operation in cooling modeIs the Pin voltage #6 - #3 of CN40 and 41changed high(4-5V) and low(0-1V) in case ofmaking manual rotation slowly?Is the Pin voltage #7 - #3 of CN40 and41 low(0-1V) in normal rotation?Yes