Astralpool PRO ELYO INVERBOOST NN 07 Manuel D'installation Et D'utilisation page 48

Malfunction
Software control
exception
Current detection circuit
failure
Compressor start failure
Ambient Temperature
device failure on Driver
board
Compressor phase
failure
Four-way valve reversal
failure
EEPROM data read
malfunction
The inter-chip
communication failure
on the main control
board
8. 8. 8. Troubleshooting Troubleshooting Troubleshooting
Error code
1.Compressor runs out of step
2. Wrong program
3. Impurity inside compressor causes
EE21
the unstable rotate speed
1. Voltage signal abnormal
EE22
2. Driver board is damaged
1. Main board is damaged
2. Compressor wiring error or poor
contact or unconnected
EE23
3. Liquid accumulation inside
4. Wrong phase connection for
compressor
EE24 Ambient Temperature device failure
Compressors U, V, W are connected to
EE25
one phase or two phases.
1. Four-way valve reversal failure
2. Lack of refrigerant (no detect when
EE26
T3 or T5 malfunction)
1. Wrong EEPROM data in the program
or failed input of EEPROM data
EE27
2. Main board failure
EE28 Main board failure
Reason
- 44 -
Solution
1. Check the main board or
change a new one
2. Enter correct program
1. Check the main board or
change a new one
2. Change a new driver board
1. Check the main board or
change a new one
2. Check the compressor wiring
according to the circuit diagram
Check the compressor or change
a new one
Change driver board or main
board
Check the actual
according to the circuit diagram
1. Switch to Cooling mode to
check the 4-way valve if it has
been reversed correctly
2. Change a new 4-way valve
3. Fill with gas
1. Re-enter correct
data
2. Change a new main board
1. Turn off electricity supply and
restart it
2. Change a new main board
wiring
EEPROM