Panasonic 26PSU1U6 Tech Data - Service Manual - Page 166

4-1. Meaning of Alarm Messages (1) Contents of remote controller switch alarm display Possible cause of malfunction 4. Service procedures ON: Blinking: OFF: Wired remote control display Wireless remote controller receiver display Operation Timer Standby Serial commu- Remote controller is Error in receiving serial communication signal E01 nication errors detecting error signal from (Signal from main indoor unit in case of group control) Mis-setting indoor unit Outdoor system address, indoor system address, or indoor unit individual/main/sub setting is not set (Automatic address setting is not completed) Auto address is not completed Error in transmitting serial communication signal E02 Indoor unit is detecting error signal from remote controller (and system controller) E03 Improper setting of indoor Indoor unit address setting is duplicated E08 unit or remote controller Remote controller setting is duplicated E09 Indoor unit is detecting error Error in transmitting serial communications signal E10 signaled from signal option Error in receiving serial communications signal E11 Automatic address setting Starting auto address setting is prohibited failed This alarm message shows that the auto address connector E12 CN100 is shorted while other RC line is executing auto address operation. Indoor unit capacity too low E15 Indoor unit capacity too high E16 Setting error No indoor units connected E20 Main unit duplication in simultaneous-operation multi control E14 (detected by outdoor unit) Indoor unit is detecting error Error in receiving serial communications signal E04 signaled from outdoor unit Error in transmitting serial communications signal E05 Outdoor unit is detecting Error in receiving serial communications signal (including unit E06 error signaled from indoor quantity verification failure) unit Error in transmitting serial communications signal E07 An indoor unit detected Error in transmitting serial communications signal E17 trouble in the signal from another indoor unit Error in receiving serial communications signal E18 4 Communications trouble Communications failure with MDC E31 between units Mis-setting Setting error Indoor unit group settings error L01 Indoor/outdoor unit type mismatch L02 Main unit duplication in group control (detected by indoor unit) L03 Outdoor unit address duplication (system address) L04 Group wiring connected for independent indoor unit L07 Address not set or group not set L08 Indoor unit capacity not set L09 Outdoor unit capacity not set or setting error L10 Miswiring in group control wiring L11 Indoor unit type setting error (capacity) L13 Simultaneously Simultaneously Simultaneously Simultaneously Continued 4-2