Panasonic U-8ME1E81 Service Manual

Also see for S-106ME1E5: Installation instructions Instruction manual Service manual Service manual Service manual

Panasonic U-8ME1E81 Service Manual Manual pdf 52 page image

3-22WAY SYSTEMTrouble Diagnosis123456781. Contents of Remote Controller Switch Alarm Display1. Contents of Remote ControllerSwitch Alarm Display2WAY SYSTEMTrouble DiagnosisON: Blinking: OFF:Possible cause of malfunctionWiredremotecontroldisplayWirelessremote controllerreceiver displayOperationTimerStandbyfor heatingSerialcommunicationerrorsMis-settingRemote controller is detectingerror signal from indoor unit.Error in receiving serial communication signal. (Signal frommain indoor unit in case of group control) Outdoor systemaddress, indoor unit address, or indoor unit addressindependent/main/sub unit setting has not been made.(Auto address is not completed.)Error in transmitting serial communication signal.Indoor unit is detecting error signal from remote controller and system controller.Indoor unit is detecting errorsignal from outdoor unit.Error in receiving serial communication signal.When turning on the power supply, the number ofconnected indoor units does not correspond to the numberset. (Except R.C. address is “0.”)Group wiring failure of indoor units in the refrigerant system(occurring when remote controller is operated immediatelyafter automatic address setting)•••<><><>F05F06F07F08E04E08Outdoor unit is detecting errorsignal from indoor unit.Error in receiving serial communication signal.There is an indoor unit which does not send signals whenthe power is ON.••Indoor unit address setting is duplicated.•Duplicated remote controller “main” setting.•Automatic address setting start is prohibited.AP pin was short-circuited at time when automatic addresssetting was started.Indoor unit communicationerror of group control wiring.Error of main indoor unit in receiving serial communicationsignal from sub indoor units.During auto. address setting,number of connected unitsdoes not correspond tonumber set.Improper settingImproper settingImproper settingIndoor unitNumber of connected indoor units is less than the number set.Number of connected indoor units is more than the number set.No indoor unit is connected during auto. address setting.Main outdoor unit is detecting error signal from sub outdoor unit.Duplicated outdoor unit address.Improper wiring between main outdoor unit and sub-unit.Error of sub outdoor unit in receiving serial communicationsignal from main outdoor unit.Outdoor unit serial communications failure.Communication error between the microcomputersConnected indoor unit is not a multi unit.Duplication of main indoor unit address setting in group control.Duplicated indoor unit priority (priority indoor unit).Duplicated indoor unit priority (non-priority indoor unit) andoutdoor unit.Indoor unit address is not set.Capacity code of indoor unit is not set.Mismatch of outdoor unit type.4-way valve operation failureDuplication of outdoor R.C. address setting.Capacity code of outdoor unit is not set.Group control wiring is connected to individual control indoor unit.E12E18E16E20E15E24E25E27E29E30E31L06L08L05<>L04L17L18L10L07Thermistor faultComp. No. 2 discharge gas temp. sensor (DISCH2)Outdoor No. 1 coil gas temp. sensor (EXG1)Outdoor air temp. sensor (TO)Outdoor No. 1 coil liquid temp. sensor (EXL1)ContinuedOperating lampblinkingHeating ready lampblinkingOperating lampblinkingHeating ready lampblinkingOperating and heatingready lamps blinkingsimultaneouslyOperating and heatingready lamps blinkingsimultaneouslyF04Comp. No. 1 discharge gas temp. sensor (DISCH1)<><><><>Indoor coil temp. sensor (E2)Indoor coil temp. sensor (E3)Indoor discharge air temp. sensor (BL)Indoor suction air (room) temp. sensor (TA)Operating andtimer lamps blinkingalternately<>Indoor coil temp. sensor (E1)Mismatch in “No. of outdoor units” setting. E26Thermistor fault Outdoor unit Operating and timerlamps blinkingaltematelyF22Comp. No. 3 discharge gas temp. sensor (DISCH3)