07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 82
Table of
Alarm messages are indicated by the blinking of LED 1 and 2 (D72, D75) on the outdoor unit PCB. They are also displayed on
the wired remote controller.
●Viewing the LED 1 and 2 (D72 and D75) alarm displays
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| Alarm contents |
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| Alarm display |
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Alternating |
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| LED 1 blinks M times, then LED 2 blinks N times. The cycle then repeats. |
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| M = 2: P alarm | 3: H alarm 4: E alarm 5: F alarm 6: L alarm |
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| N = Alarm No. |
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| Example: LED 1 blinks 2 times, then LED 2 blinks 17 times. The cycle then repeats. |
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| Alarm is "P17." |
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( : Blinking) | Connect the outdoor maintenance remote controller to the RC socket on the outdoor main unit control PCB (3P, blue), | ||||||||||
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| and check the Alarm Messages on the remote controller display. |
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Possible cause of malfunction |
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Serial |
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| Remote controller is detecting | Error in receiving serial communication signal. |
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communication |
| error signal from indoor unit. | (Signal from main indoor unit in case of group control) | <E01> |
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errors |
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| Ex: 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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| Indoor unit is detecting error | Error in receiving serial communication signal. |
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| signal from main outdoor unit. | When turning on the power supply, the number of connected | E04 |
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| indoor units does not correspond to the number set. (Except R.C. |
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| address is “0.”) |
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| Error of the main outdoor unit in receiving serial communication | <E06> |
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| signal from the indoor unit. |
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| Improper setting of indoor unit or | Indoor unit address setting is duplicated. | E08 |
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| remote controller. |
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| Remote controller address connector (RCU. ADR) is duplicated. | <<E09>> |
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| (Duplication of main remote controller) |
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| During auto address setting, | Starting auto address setting is prohibited. |
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| number of connected units does | This alarm message shows that the auto address connector CN100 | E12 |
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| not correspond to number set. | is shorted while other RC line is executing auto address operation. |
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| Error in auto address setting. (Number of connected indoor units | E15 |
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| is less than the number set.) |
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| When turning on the power | Error in auto address setting. (Number of connected indoor units | E16 |
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| supply, number of connected | is more than the number set.) |
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| units does not correspond to | No indoor unit is connected during auto address setting. | E20 |
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| Main outdoor unit is detecting error signal from sub outdoor unit. | E24 |
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| (Except R.C. address is “0.”) |
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| Error of outdoor unit address setting. | E25 |
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| The number of connected main and sub outdoor units do not | E26 |
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| correspond to the number set at main outdoor unit PCB. |
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| Error of sub outdoor unit in receiving serial communication signal | E29 |
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| from main outdoor unit. |
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| Indoor unit communication error | Error of main indoor unit in receiving serial communication signal | E18 |
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| of group control wiring. | from sub indoor units. |
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| Improper setting. | This alarm message shows when an indoor unit for | L02 |
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| Duplication of main indoor unit address setting in group control. | <L03> |
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| Duplication of outdoor R.C. address setting. | L04 |
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| There are 2 or more indoor unit | Priority set remote controller | L05 |
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| controllers that have operation |
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| L06 |
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| mode priority in refrigerant circuit. |
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| Group control wiring is connected to individual control indoor unit. | L07 |
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| Indoor unit address is not set. |
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| Capacity code of indoor unit is not set. | <<L09>> |
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| Capacity code of outdoor unit is not set. | L10 |
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| L17 |
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| of refrigerant. |
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| L18 |
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| Continued | |||
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