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SELF-DIAGNOSIS FUNCTION
ENGLISH
SELF-DIAGNOSIS FUNCTION
Self-Diagnosis Function
Error Indicator
- This function indicates types of failure in self-diagnosis and occurrence of failure for air condi-
tioner.
- Each error mark is displayed on the cable remote control, the 7-segment LED of the outdoor
unit control board as shown in the table.
- If more than two troubles occur simultaneously, lower number of the error code is first dis-
played.
- The error code displayed will disappear after the error is corrected.
Error Display
- 1
st
, 2
nd
, and 3
rd
LED of 7-segment indicate the error code number, and the 4th LED indicates
the unit number.
e.g.) 1131: error number 113 of the 1st outdoor unit (No.113 error)
- For the indoor unit errors, it does not display on the 7-segment but only on the indoor unit
remote control.
e.g.) CH→ 01: error number 1 (No.1 error)
Error No.
Display Error types Cause of error
Indoor unit related error
1
2
3
4
5
6
9
10
11
Air temperature sensor error of indoor
unit
Inlet pipe temperature sensor error of
indoor unit
Communication error between cable
remote control and indoor unit
Indoor drain error
Communication error between out-
door and indoor units
Outlet pipe temperature sensor error
of indoor unit
Indoor unit EEPROM error
Indoor unit BLDC Motor Feedback sig-
nal error
Communication error between out-
door and indoor units
Air temperature sensor of indoor unit discon-
nection or short circuit
Inlet pipe temperature sensor disconnection
or short circuit
The cable remote control fails to receive the
signals from indoor unit
Malfunction of drain pump or float switch
Indoor unit fails to receive the signals from
indoor unit for more than 5 minutes in a row
Inlet pipe temperature sensor of indoor unit
disconnection or short circuit
Communication error between MICOM and
EEPROM or omission of EEPROM data
(indoor unit)
Motor connector removed or motor error
Indoor unit fails to receive the auto-addressing
calling signal for a certain amount of time
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