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– 75 –Turn off powersupply once, andturn it on again.Start to operateindoor unit in coolingoperation at airflowlevel “LOW”.YES(3) Only the indoor motor fan does not operate1. Is it possible to detect the power supply voltage (AC220–240V) between and on the terminal block?2. Does the indoor fan motor operate in cooling operation?(In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turnedon, to prevent a cold air from blowing in.)Control P.C. board failureChange airflow levelto “HIGH”.When rotating thecross-flow fan by handat the operation stopcondition, is the rotation signal(DC+12V 0V) detected between2 (Purple lead) and 3(Blue lead) of the motorconnector (CN33)(1 pulse / 1 revolutio).Dose AC120V orligher voltage apply tobetween red and black leadof the motor?Is it possible tochange airflow levelto “HIGH”?Stop the operationDoes fan motorcontinue to operate?Does indoorfan operate?Fan motoroperates normally.Replace mainP.C. board.ReplaceYESYESYESMotor circuit (D301, IC31, Q30112V power circuit (T101) failure.Replace the fan motor.YESNONOReplace the P.C. board.NONONOTurn OFF the powerChange airflow levelto “HIGH”.Change airflow levelto “HIGH”.Is it possible toYESrotate cross-flow fan byhand properly?NOTurn OFF the powerbearing.(42NQV025H, 42NQV035H, 42NQV035M)FILE NO. SVM-07013 |
