Racer INVERTER 7 Notice D'installation Et D'utilisation page 83

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
Error
code
1.Compressor runs out of step
2. Wrong program
EE21
3. Impurity
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
EE24
failure
Compressors
EE25 connected to one phase or two
phases.
1. Four-way valve reversal failure
EE26
2. Lack of refrigerant (no detect
when T3 or T5 malfunction)
1. Wrong EEPROM data in the
program or
EE27
EEPROM data
2. Main board failure
EE28 Main board failure
Reason
inside compressor
Temperature device
U, V, W are
failed input of
- 80 -
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
3. Turn off electricity supply
and restart it
2. Change a new main board
or
wiring