Toshiba MMD-AP0481HF2UL Service Manual

Also see for MMD-AP0481HF2UL: Service manual Owner's manual Installation manual Manual

– 62 –10-4. Check Codes Displayed on Remote Control and SMMS-e andSMMS-i Outdoor Unit (7-Segment Display on I/F Board) andLocations to Be CheckedFor other types of outdoor units, refer to their own service manuals.MainremotecontrolCheck codeE01 — —RemotecontrolIndoor-remotecontrolcommunicationtrouble(detected atremotecontrol end)Stop ofcorrespondingunitCommunication between indoorP.C. board and remote control isdisrupted.• Check remote control inter-unittie cable (A/B).• Check for broken wire orconnector bad contact.• Check indoor power supply.• Check for defect in indoor P.C.board.• Check remote control addresssettings (when two remotecontrols are in use).• Check remote control P.C. board.E02 — —RemotecontrolRemote controltransmissiontroubleStop ofcorrespondingunitSignal cannot be transmitted fromremote control to indoor unit.• Check internal transmissioncircuit of remote control.--- Replace remote control asnecessary.E03 — —IndoorunitIndoor-remotecontrolcommunicationtrouble(detected atindoor end)Stop ofcorrespondingunitThere is no communication fromremote control (including wireless)or network adaptor.• Check remote control andnetwork adaptor wiring.E04 — —IndoorunitIndoor-outdoorcommunicationcircuit trouble(detected atindoor end)Stop ofcorrespondingunitIndoor unit is not receiving signalfrom outdoor unit.• Check order in which power wasturned on for indoor and outdoorunits.• Check indoor address setting.• Check indoor-outdoor tie cable.• Check outdoor terminatingresistor setting (SW30, Bit 2).E09 — —RemotecontrolDuplicatedmaster remotecontrolStop ofcorrespondingunitIn two remote control configuration(including wireless), both controlsare set up as master. (Headerindoor unit is shut down with alarm,while follower indoor units continueoperating.)• Check remote control settings.• Check remote control P.C.boards.E10 — —IndoorunitIndoor inter-MCUcommunicationtroubleStop ofcorrespondingunitCommunication cannot beestablished/maintained uponturning on of power or duringcommunication.• Check for defect in indoor P.C.boardE12 E1201:Indoor-outdoorcommunication02:Outdoor-outdoorcommunicationI/F Automaticaddress startingtroubleAll stop • Indoor automatic address settingis started while automatic addresssetting for equipment in otherrefrigerant line is in progress.• Outdoor automatic addresssetting is started while automaticaddress setting for indoor units isin progress.• Perform automatic addresssetting again after disconnectingcommunication cable to thatrefrigerant line.E15 E15 —I/F Indoor unit notfound duringautomaticaddress settingAll stop Indoor unit cannot bedetected after indoorautomatic address setting isstarted.• Check connection of indoor-outdoor communication line.• Check for trouble in indoor powersupply system.• Check for noise from other devices.• Check for power failure.• Check for defect in indoor P.C.board.E06 E06No. of indoor units fromwhich signal is receivednormallyI/F Signal lack ofindoor unitAll stop Indoor unit initiallycommunicating normally failsto return signal for specifiedlength of time.• Check power supply to indoor unit.(Is power turned on?)• Check connection of indoor-outdoor communication cable.• Check connection ofcommunication connectors onindoor P.C. board.• Check connection ofcommunication connectors onoutdoor P.C. board.• Check for defect in indoor P.C.board.• Check for defect in outdoor P.C.board (I/F).E08 E08Duplicated indooraddressIndoorunit I/FDuplicatedindoor addressAll stop More than one indoor unit areassigned same address.• Check indoor addresses.• Check for any change made toremote control connection(group/individual) since indooraddress setting.— E07 —I/F Indoor-outdoorcommunicationcircuit trouble(detected atoutdoor end)All stop Signal cannot be transmitted fromoutdoor to indoor units for 30seconds continuously.• Check outdoor terminatingresistor setting (SW30, Bit 2).• Check connection of indoor-outdoor communication circuit.Outdoor 7-segment displayCheckcode Sub-codeLocationofdetection Description System status Trouble detectioncondition(s) Check items (locations)