56
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
Error Code Anomaly signalled Indoor unit status / Solution / Solution
A403 Freezing detection (during cooling operation)
Check the chiller cycle.
Check the temperatures of the plate heat exchanger
(1)
A404
P r o t e c t i o n o f ou t d o o r u n i t w h e n i n o v e r l o a d
(during safety start-up, normal operating status)
Check the chiller cycle.
Check the compressor connections.
Check the resistances between the dierent phases of the compres-
sor
(1)
A407 Compressor not working due to high pressure
Check the chiller cycle
(1)
A416 e c o m p r e s s o r d i s c h a r g e i s o v e r h e a t e d (1)
A430 Outdoor unit EEV operation error (1)
A425 N o t u s e d o n t h i s m o d e l (1)
A440
Central heating blocked (outdoor temperature
beyond 35°C)
(1)
A441 Cooling blocked (outdoor temperature below 9°C) (1)
A458 Error of outdoor unit fan no.1 1
A461 Compressor start-up error (Inverter)
Check the chiller cycle.
Check the compressor connections.
Check the resistances between the dierent phases of the compres-
sor
(1)
A462 Inverter total current overload error
Check the inlet current.
Check the refrigerant charge.
Check normal operation of the fan.
(1)
A463 Compressor overheated sensor
Check the compressor sensor.
(1)
A464 Inverter IPM current overload error
Check the compressor connections and its normal operation.
Check the refrigerant charge.
Check whether there are obstacles around the outdoor unit.
Check whether the service valve is open.
Check whether the installation pipes are mounted properly.
(1)
A465 Compressor overload error
Check the compressor connections and its normal operation.
Check the resistances between the dierent phases of the compres-
sor.
(1)
A466 Low voltage error of DC circuit
Check the input voltage.
Check the power connections.
(1)
A467 Compressor rotation error
Check the compressor connections.
Check the resistances between the dierent phases of the compres-
sor.
(1)
A468 Current sensor error (inverter)
Check the main board.
(1)
(1) If the shutdown or fault persists, contact an authorised company (e.g. Authorised Aer-Sales Technical Assistance Centre)