SiMT041311E TroubleshootingService Diagnosis 1262.2 Air conditioner does not run.SupposedCauses Power supply is OFF. Improper power supply voltage Improper connection of wire Incorrect combination of indoor unit and outdoor unit Battery shortage of remote controller Invalid address setting Protection device works(dirty air filter, refrigerant shortage, overfilling, mixed air, etc.) Transmission error between indoor unit and outdoor unit(Defective outdoor unit PCB)TroubleshootingYESYESYESYESInsert the power supplyplug into the outlet. Turn onthe breaker for the powersupply.Wait till the power isrestored.Connect the power supplyof proper voltage (checkthe varistor and the fuse).Ask the electric powercompany.Replace the fuse or thethermal fuse.The 3-minute standbyfunction is activated.Operation restarts3 minutes later.Connect the wires properly.Is the power supplyplug inserted into theoutlet or the breaker forthe power supplybreaker ON?CautionDo the other electricappliances work?NONONONO YESNONOYESYESDoes the fuse or thethermal fuse blow?NOWithin 3 minutes afteroperation stopped?NOIs the wireconnection and thewire size correct?YESPower failure?Is the power supplyvoltage appropriate?Go to the next page.(R19677)Be sure to turn off the power switch before connecting or disconnectingconnectors, or parts may be damaged.Is thepower supply voltagefluctuation within ±10% fromthe rated value?
