Check Code List
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| Operation of diagnostic function |
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| Judgment and measures | |
Check |
| Cause of operation |
| Status of |
| Condition |
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code |
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| air conditioner |
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| No communication from remote |
| Stop |
| Displayed when | 1. | Check cables of remote controller and communication adapters. | |
E03 |
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| • Remote controller LCD display OFF (Disconnection) | ||||
| controller (including wireless) and |
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| (Automatic reset) |
| error is detected |
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| communication adapter |
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| • Central remote controller [97] check code | |||
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| The serial signal is not output from |
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| 1. | Outdoor unit does not completely operate. | |
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| outdoor unit to indoor unit. |
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| • Miswiring of |
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| Stop |
| Displayed when |
| • Check outdoor P.C. board. Correct wiring of P.C. board. | ||
E04 |
| • Defective serial sending circuit on |
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| (Automatic reset) |
| error is detected | 2. When outdoor unit normally operates | ||||
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| outdoor P.C. board |
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| Check P.C. board (Indoor receiving / Outdoor sending). | |
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| • Defective serial receiving circuit on |
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| indoor P.C. board |
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E08 |
| Duplicated indoor unit address |
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| 1. | Check whether remote controller connection (Group/Individual) | |
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| was changed or not after power supply turned on | |
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L03 |
| Duplicated indoor header unit |
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| Displayed when |
| (Finish of group construction/Address check). | |
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| Stop |
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| * If group construction and address are not normal when the | ||
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| There is group wire in individual indoor |
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| error is detected |
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L07 |
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| power has been turned on, the mode automatically shifts to | ||||
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| unit. |
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| address setup mode. (Resetting of address) | |
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L08 |
| Unset indoor group address |
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L09 |
| Unset indoor capacity |
| Stop |
| Displayed when | 1. Set indoor capacity (DN=11) |
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| error is detected |
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L30 |
| Abnormal input of outside interlock |
| Stop |
| Displayed when | 1. Check outside devices. |
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| error is detected | 2. | Check indoor P.C. board. |
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| Float switch operation |
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| 1. | Trouble of drain pump |
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P10 |
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| Stop |
| Displayed when | 2. Clogging of drain pump |
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| • Float circuit, Disconnection, |
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| error is detected | 3. | Check float switch. |
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| 4. | Check indoor P.C. board. |
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| 1. | Position detection error |
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P12 |
| Indoor DC fan error |
| Stop |
| Displayed when | 2. Indoor fan driving part | ||
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| error is detected | 3. | Indoor fan lock |
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| 4. | Indoor P.C. board check | 5. Static pressure error set |
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| 1. | Check |
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| Stop |
| Displayed when | 2. Check | |||
P19 |
| • After heating operation has started, |
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| (Automatic reset) |
| error is detected | 3. | Check indoor heat exchanger (TC/TCJ). | |||
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| indoor heat exchangers temp. is |
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| down. |
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| 4. | Check indoor P.C. board. |
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| Own unit stops while warning is output |
| Stop |
| Displayed when | 1. | Judge follower unit while master unit is [E03], [L03], [L07] or [L08]. | |
P31 |
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| (Follower unit) |
| 2. | Check indoor P.C. board. |
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| to other indoor units. |
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| error is detected |
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| (Automatic reset) |
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F01 |
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| Stop |
| Displayed when | 1. | Check indoor heat exchanger temp. sensor (TCJ). | ||
| indoor heat exchanger temp. sensor |
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| 2. Check indoor P.C. board. |
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| (Automatic reset) |
| error is detected |
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| (TCJ) |
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| Stop |
| Displayed when | 1. | Check indoor heat exchanger temp. sensor (TC). | ||
F02 |
| indoor heat exchanger temp. sensor |
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| 2. Check indoor P.C. board. |
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| (Automatic reset) |
| error is detected |
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| (TC) |
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F10 |
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| Stop |
| Displayed when | 1. | Check indoor heat exchanger temp. sensor (TA). | ||
| indoor heat exchanger temp. sensor |
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| 2. Check indoor P.C. board. |
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| (Automatic reset) |
| error is detected |
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| (TA) |
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F29 |
| Indoor EEPROM error |
| Stop |
| Displayed when | 1. Check indoor EEPROM. (including socket insertion) | ||
| • EEPROM access error |
| (Automatic reset) |
| error is detected | 2. | Check indoor P.C. board. |
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| Communication error between indoor |
| Stop |
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| 1. | Check indoor P.C. board. |
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E10 |
| MCU |
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| Displayed when |
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| • Communication error between fan |
| (Automatic reset) |
| error is detected |
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| driving MCU and main MCU |
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| Regular communication error between |
| Stop |
| Displayed when | 1. | Check remote controller wiring. |
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E18 |
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| 2. | Check indoor power supply wiring. | ||||
| indoor header and follower units |
| (Automatic reset) |
| error is detected | ||||
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| 3. | Check indoor P.C. board. |
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– 42 –