Haier SYJS-0308 Service Manual

Also see for AB092FCAHA: Operation and installation manual

Haier SYJS-0308 Service Manual Manual pdf 77 page image

7.2 Troubleshooting(1) Indoor unit trouble indication: timer indicator flashes (once, twice, 3 times, 7 times)Abnormal reasons:Heat sensitive resister is short circuit or open circuitThe treatment to sensor output part in PC board is improper, such as poor contact ofpackage part, the electrolytic capacitor for filtering is failed, etc.Treatment:Remove the heat sensitive resister, test and measure its numerical value. According to theresister temperature character table to evaluate if it is heat sensitive resister abnormal. Ifnumerical value of resister is normal, check if it is poor contact. If contact is good, replace theindoor unit PC board.(2) Outdoor unit trouble indication: timer indicator flashes (4 times)Abnormal reasons:Communication wire is open circuit or short circuitThere is powerful electromagnetic disturbing source near the air conditionerThe indoor & outdoor unit are not correctly set with unit numberThe PC board is improperTreatments: use the ohm grade of multimeter to check the numerical value of resister betweencommunication wire to determine if it is short circuit or open circuit. If normal, examine ifthere is powerful electromagnetic disturbing source near the air conditioner, such as radiowave sending devices. After verifying there is no powerful disturbance near air conditioner,reset the unit number of indoor unit and outdoor unit. If there is still abnormal, change the PCboard of the trouble indoor & outdoor unit. Please note that after changing the PC board ofindoor & outdoor unit, they both should be reset their unit number.(2) Indoor unit trouble indication: timer indicator flashes (5 times)Abnormal reasons:Communication wire is open circuit or short circuitThere is powerful electromagnetic disturbing source near the air conditionerPC board is improperTreatments: use the ohm grade of multimeter to check the numerical value of resister betweencommunication wire to determine if it is short circuit or open circuit. If normal, examine ifthere is powerful electromagnetic disturbing source near the air conditioner, such as radiowave sending devices. After verifying there is no powerful disturbance near air conditioner,change the PC board of abnormal indoor unit or electronic expansion valve driver.(3) Indoor unit trouble indication: timer indicator flashes (6 times)Abnormal reasons:PC board is improperTreatment: change the improper PC board of indoor unit.(4) Indoor unit trouble indication: timer indicator flashes (8 times)Abnormal reasons:The PC board of electronic expansion valve driver is improperTreatment: change the PC board of electronic expansion valve driver.(5) Indoor unit trouble indication: timer indicator flashes (10 times)Abnormal reasons:Plastic sealed motor is improperPC board is improper