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