Astralpool ELYO SMART NN 06 Manual Del Usuario página 44

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. Troubleshooting
Error code
1.Compressor runs out of step
2. Wrong program
EE21
3. Impurity inside compressor causes
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
Ambient Temperature device failure
EE24
Compressors U, V, W are connected
EE25
to one phase or two phases .
1. Four-way valve reversal failure
2. Lack of refrigerant (no detect
EE26
when T3 or T5 malfunction)
1. Wrong EEPROM data in the
program or failed input of EEPROM
EE27
data
2. Main board failure
Main board failure
EE28
Reason
- 40 -
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
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 EEPROM
data
2. Change a new main board
1. Turn off electricity supply
and restart it
2. Change a new main board
or
wiring