Carrier 42NQV025H Service Manual

Contents

Turn off powersupply once, andturn it on again.Start to operateindoor unit in coolingoperation at airflowlevel “LOW”.Turn off indoor unit andremove connector from motor.Then start to operate indoorunit with remote controller.Turn off indoor unit and removeconnector from motor.Then push START/STOP buttonon remote controller to stopflashing lamp on indoor unit.Change airflow levelto “HIGH”.Turn off indoor unitand rotate cross-flowfan by hand when theunit is on standby.At this time, is it possible todetect DC 1V or morebetween 5 + and 3 –of motor connector(CN31).Start to operate theindoor unit in exceptheating operation.At this time, is it possibleto detect DC 1V or morebetween 5 + and 3 –of motor connector (CN31)?(Check this conditionwithin 15 seconds afterstarting unit.)Start to operate theindoor unit in exceptheating operation.At this time, is it possible todetect DC 1V or more between5 + and 3 – of motorconnector (CN31)?Is it possible to detectDC 1V or more between5 + and 3 – ofmotor connector (CN31).Is it possible to detectDC 310–340V between1 + and 3 – of motorconnector (CN31).(Motor connection condition)Is it possible to detect DC 15Vbetween 4 + and 3 – ofmotor connector (CN31).Is it possible to detectDC 15V between 4 +and 3 – of motorconnector (CN31).Is it possible tochange airflow levelto “HIGH”?Is it possible torotate cross-flow fan byhand properly?Does fan motorcontinue to operate?Does indoorfan operate?Fan motoroperates normally.Peplace indoorfan motor.Peplace mainP.C. board.Peplacebearing.YESYESYESYESYESYESYESYESYESYESNONOYESNONONONONONONONONO(42NQV045H, 42NQV045M)– 76 –FILE NO. SVM-07013