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 Display

 

Error

Measures for the installer to take

Display

 

LED 1

LED 2

LED 3

 

 

 

 

 

 

 

 

/

/

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Communication

• Check the connection wire

 

 

 

 

 

 

 

error between

between the indoor and outdoor

 

 

 

 

 

 

 

units (whether the power cable or

 

 

 

 

 

 

 

indoor and

 

 

 

 

 

 

 

communication cable is crossed or

 

 

 

 

 

 

 

outdoor units

not).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error on indoor

• Check the connection of the

 

 

 

 

 

 

 

temperature

connector.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

sensor

 

 

 

 

 

 

 

 

 

 

,

 

 

 

 

 

 

Error on indoor

• Check the connection of the

 

 

 

 

 

 

heat exchanger

connector.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error on indoor fan

• Check the connection of the

 

 

 

 

 

 

 

motor

connector.

 

 

 

 

 

 

 

• Remove foreign substance. (Check

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

for the cause that restrains motor.)

 

 

 

 

 

 

 

 

 

display

 

 

 

 

 

 

EEPROM/Option

Re-set options.

and all LEDs

 

 

 

 

 

error

 

blink.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Refrigerant flow

• Check if the stop valve is completely

 

 

 

 

 

 

 

blocking error

open.

 

 

 

 

 

 

 

• Check if there is any blockage in the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

refrigerant pipe which connects the

 

 

 

 

 

 

 

 

indoor and outdoor units.

 

 

 

 

 

 

 

 

• Check for refrigerant leak.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lack of refrigerant

• Check if a sufficient amount of

 

 

 

 

 

 

 

(for inverter

refrigerant is additionally charged

 

 

This LED pattern

 

for the pipe longer than specified in

 

 

 

models only)

 

 

 

piping codes and standards.

 

 

 

appears when an

 

• Check for refrigerant leak between

 

 

 

error occurs on the

 

 

 

 

 

valve and pipe connection.

 

 

 

outdoor unit.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

: Off, : Blinking, : On

Installation

English 49