Samsung SH07ZP2 Service Manual

Also see for AQ07P2GE: Owner's instructions Installation manual

Contents

27Samsung ElectronicsTroubleshooting6-2-6 When the UP/DOWN Louver Motor Does Not Operate. (Initial Diagnosis)1. Checklist :1) Is input voltage normal?2) Is the UP/DOWN louver motor properly connected with the connector (CN61)?2. Troubleshooting procedure6-2-7 In the HEAT mode, When there is no warm air current. Check this fist;1. Is the set temperature of Remote Control lower than room temperature in Heat mode?2. Is the Indoor PCB properly connected with the CN71 connector?Remove power cord and plug in again in approx. 5 seconds.Is STD lamp blinking?Does operation start when swing button of theremote control unit pushed?Voltage at pin #57~#60 of micom (IC04) change?(Squarewave)Voltage at pin #2 ~ #5 of CN61(motor connector)change?(Squarewave)UP/DOWN louver motor is faulty.Driver IC06/08 (ULN2003A) is faulty.Micom (IC04) is faulty.NormalCheck as in the procedure"No Power".After training on, the heating operationshould start in 5 minutes.Is the number #38 of Micom (IC04) DC 5.0V?Is the number checking #11 of IC05 (ULN2003A) LOW?Is the voltage between CN71 #1 and CN71 #5 rating voltage ±10% rangeAbnormal 4-Way valve of Outdoor Unit.or connecting Cable4-Way valve should be replacedor connecting Cable Check.NoYesYesYesNoNoNoYes NormalAbnormal MicomAbnormal IC05Abnormal RY73PCB should be replaced.YesNoNoYesNoNoYesYes