3
6
INSTALLATION OF UNIT
ENGLISH
Display
Title
Cause of Error
Outdoor unit related error
4
9
1
Master Outdoor Unit Faulty IPM
Temperature Sensor
Master Outdoor Unit IPM Temperature Sensor
short/open
2
Slave Outdoor Unit Faulty IPM
Temperature Sensor
Slave Outdoor Unit IPM Temperature Sensor short/open
5
0
1
Omitting connection of R, S, T power of
Master
Omitting connection of Master
2
Omitting connection of R, S, T power of
Slave (For 20/23/25RT Only)
Omitting connection of Slave
5
2
1
Communication error : inverter PCB
’
Main PCB
Failing to receive inverter signal at main PCB of Master
2
Communication error : inverter PCB
’
Main PCB (For 20/23/25RT Only)
Failing to receive inverter signal at main PCB of Slave
5
3
1
Communication error : indoor unit
’
main PCB of Master
Failing to receive indoor unit signal at main PCB of
Master.
5
4
1
Reversed connection of R,S,T power of
Unit
Reversed connection of R,S,T power supply cable
2
Reversed connection of R,S,T power of
Unit (For 20/23/25RT Only)
Reversed connection of R,S,T power supply cable
5
7
1
Master Communication Error with
Inverter Controller
Master Controller part cannot receive inverter control
signals (usually happens after on-boarding)
2
Slave Communication Error with Inverter
Controller (For 20/23/25RT Only)
Slave Controller part cannot receive inverter control sig-
nals (usually happens after on-boarding)
5
9
2
Series Installation Error
(For 20/23/25RT Only)
Different capacity of the EEPROM
6
0
1
Inverter PCB EEPROM Error of Master
Access Error of Inverter PCB of Master
2
Inverter PCB EEPROM Error of Slave
(For 20/23/25RT Only)
Access Error of Inverter PCB of Slave
6
2
1
Inverter IPM temperature excessive rise
error.
Temperature of Inverter IPM Heat sink is excessive
rises.
2
Inverter IPM temperature excessive rise
error. (For 20/23/25RT Only)
Temperature of Inverter IPM Heat sink is excessive
rises.
6
5
1
Master Faulty IPM Temperature Sensor
Master IPM Temperature Sensor short/open
2
Slave Faulty IPM Temperature Sensor
(For 20/23/25RT Only)
Slave IPM Temperature Sensor short/open
6
7
1
Master Fan Lock
Restriction of Master
2
Slave Fan Lock (For 20/23/25RT Only)
Restriction of Slave
6
9
1
Constant1 CT Sensor Error of Master
Constant1 CT Sensor open or short of Master
2
Constant1 CT Sensor Error of Slave (For
20/23/25RT Only)
Constant1 CT Sensor open or short of Slave
7
3
1
Instant Over Current(Peak) of Master
PFC
Instant Over Current(Peak) of Master PFC
2
Instant Over Current(Peak) of Slave PFC
(For 20/23/25RT Only)
Instant Over Current(Peak) of Slave PFC
Summary of Contents for AK-Q180BC00
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