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Error
codes
Error contents,
Location of the error
Verification
Breakdown maintenance
Error
reset
A2
Protection measures
against direct
current overintensity
detection
Abnormal operation in
under/overload
Check the installation's environment
(blockage of the air inlet and outlet)
Check the excess gas
Check that the air flows freely in and out
Manual
If there is excess gas, collect the cooling gas first of all,
then reload with the recommended quantity of gas
Drop in power supply
voltage
Check the power supply voltage (230V)
Main board
Run the heat pump with the
compressor disconnected
If the same error code appears again, replace the main
board
Temporary interruption
in power supply (in the
event of a storm)
---
Restart
Compressor
Other than described above
Replace the compressor
A3
CT disconnection
Main board
---
Replace the main board
Manual
A4
Protection measures
against direct
current overintensity
detection
Abnormal operation in
under/overload
Check the installation's environment
(blockage of the air inlet and outlet)
Check the excess gas
Check that the air flows freely in and out
If there is excess gas, collect the cooling gas first of all,
then reload with the recommended quantity of gas
Drop in power supply
voltage
Check the power supply voltage (230V)
Temporary interruption
in power supply (in the
event of a storm)
---
Restart
A5
Anormal compressor
rotation
Abnormal operation in
under/overload
Check the installation's environment
(blockage of the air inlet and outlet)
Check the excess gas
Check that the air flows freely in and out
If there is excess gas, collect the cooling gas first of all,
then reload with the recommended quantity of gas
Drop in power supply
voltage
Check the power supply voltage (230V)
Fuse CF6
0639U : 250V 15A
1039U : 250V 25A
Check the electrical continuity
Test the CF6 fuse
If CF6 is burnt, replace the main board
Circulator and/or
hydraulic circuit blocked
Check the circulator and the
hydraulic circuit
Remove the plug then restart
Drop in power supply
voltage
Check the power supply voltage (230V) during operation
Temporary interruption
in power supply (in the
event of a storm)
---
Restart
Compressor or Main
board
Other than described above
Replace the compressor
A6
Suction temperature
sensor error.
Suction temperature
sensor
Test the sensor
If the sensor is defective, replace it
Auto
A7
Defrosting
temperature sensor
error.
Defrosting temperature
sensor
Test the sensor
If the sensor is defective, replace it
A8
Discharge
temperature sensor
error
Discharge temperature
sensor
Test the sensor (*1)
If the sensor is defective, replace it
(*1) If a circuit is open on the discharge sensor, the error message is displayed 10 minutes after start-up.
In the event of a short circuit on the discharge sensor, the error message is displayed immediately.
(*2) During a check on the fan motor and/or the circulating pump, disconnect the electricity supply completely then check its terminals and
connectors.
Aurea M / Installation / 1883 - EN
Содержание AEYC-0639U-AT
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