When error occurs, take necessary measures by referring to the following table. For more information on necessary
measures for errors, refer to the service manual.
Error indicator
LED 1 LED 2
Display
,
display and
all LEDs blink.
,
This LED pattern
: Off,
: Blinking,
22 English
A3050_EU_Best model_IM_DB68-06152A-00_EN.indd 22
LED Display
LED 3
/
/
Communication
error between
indoor and outdoor
units
Error on indoor
temperature sensor
Error on indoor
heat exchanger
Error on indoor fan
motor
EEPROM/Option
error
Refrigerant flow
blocking error
Lack of refrigerant
(for inverter models
only)
appears when an
error occurs on the
outdoor unit.
: On
Error
Measures for the installer to take
• Check the connection wire between the
indoor and outdoor units (whether the
power cable or communication cable is
crossed or not).
• Check the connection of the connector.
• Check the connection of the connector.
• Check the connection of the connector.
• Remove foreign substance. (Check for the
cause that restrains motor.)
• Re-set options.
• Check if the stop valve is completely
open.
• Check if there is any blockage in the
refrigerant pipe which connects the
indoor and outdoor units.
• Check for refrigerant leak.
• Check if a sufficient amount of refrigerant
is additionally charged for the pipe
longer than specified in piping codes and
standards.
• Check for refrigerant leak between valve
and pipe connection.
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