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Test Run
ENGLISH
Installation Manual 61
Display Error item Root cause of error
5 3 1
Communication error with master outside
unit contrller and indoor unit
When the indoor uint control signal is not received from
the master outside unit inverter controller
5 7 1
Communication error between outside
unit inverter controller
Failing to receive inverter contoroller signal at Outdoor
Unit controller
6 0 1 Outside unit inverter PCB EEPROM error Oudoor unit inverter PCB EEPROM ACCESS error
6 2 1 Outside unit inverter IGBT over-rise error
Outside unit inverter IGBT when the temperature rises
above 110°C
6 5 1
Outside unit inverter IGBT temperature
sensor error
Outside unit inverter IGBT temperature sensor discon-
nection or short circuit
7 0 1 Outside unit static speed CT sensor error
Outside unit static speed CT sensor disconnection or
short circuit
7 1 1 PFC CT Sensor Error of Outdoor Unit Outdoor Unit PFC CT Sensor open or short
7 3 1
Outside unit inverter PCB input instant
over-current (Peak)
Outside unit inverter PCB input instant over-current
(Peak) exceeded
7 4 1
Outside unit inverter PCB phase imbal-
ance
When the master outside unit inverter PCB input current
is different
8 6 1 Outside unit master PCB EEPROM error
Communication error between master outside unit master
MICOM and EEPROM or EEPROM missing
8 8 1 PFC PCB EEPROM error
Communication error between Outside unit PFC and
EEPROM or EEPROM missing
1
1 3 1
Outside unit liquid pipe temperature sen-
sor error
Outside unit liquid pipe temperature sensor disconnection
or short circuit
1 5 1 1 Outside unit 4 way valve switch failure Outside unit 4 way valve switch error
1 8 0 1
Plate type heat exchanger freeze preven-
tion
Plate type heat exchanger freeze prevention error
1 8 1 1 Water temperature sensor error Water temperature sensor open/short
1 8 2 1 Communication error between MICOMs
Communication error between main MICOM and sub
MICOM
n Refer to the troubleshooting guide of service technical manual for each error.
Outside unit
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