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4. 3-WAY ECO-i Alarm Codes
L04 Alarm
Alarm code
Alarm meaning
Alarm conditions
Probable cause
Check
Correction
Example
Notes
L10 Alarm
Alarm code
Alarm meaning
Alarm conditions
Probable cause
Check
Correction
Example
Notes
L17 Alarm
Alarm code
Alarm meaning
Alarm conditions
Probable cause
5
Check
Correction
Example
Notes
L04
Outdoor system address duplication
Communication by inter-unit control wiring was received that contained the same address as that
unit 5 times or more within 3 minutes.
Incorrect outdoor system address settings
Check the system address settings again.
Correct the system address settings.
—
Recovery from this alarm occurs automatically (when communication that contains the same
address as that unit is not received for 3 minutes after detection).
L10
Outdoor unit capacity not set
The outdoor unit capacity has not been set, or the setting is not allowed by the system.
This alarm occurs because the capacity has not been set.
Connect the outdoor unit maintenance remote controller. On the outdoor unit EEPROM detailed
setting mode screen, check the value for the outdoor unit capacity (item code 81). Check that it is
not set to "0" or to a capacity that is not allowed.
If item code 81 is incorrect, use the outdoor unit maintenance remote controller and set it
correctly.
* After changing the setting, be sure to reset both the indoor and outdoor power.
—
The outdoor unit maintenance remote controller is required in order to set the capacity in the
outdoor unit EEPROM.
L17
Outdoor unit model mismatch
This alarm occurs when a unit other than a R410A refrigerant model is connected.
(1) A unit that uses R407C refrigerant, or a R22 model unit, was connected by mistake.
(2) The connected unit is correct, however the refrigerant type setting in the outdoor unit
EEPROM (item code 80) is incorrect.
(1) Check the refrigerant type at the connected unit.
(2) Use the outdoor unit maintenance remote controller and check the item code 80 refrigerant
type. If the setting is incorrect, change it to R410A.
—
—
The outdoor unit maintenance remote controller is required in order to set the refrigerant type in
the outdoor unit EEPROM.
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3-WAY ECO-i SYSTEM
Trouble Diagnosis
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