innovair QUANTUM WIN12HV51 User Manual page 35

INNOVAIR QUANTUM INVERTER
Error Code Indicators
Ο
★
7
Ο
★
8
× ×
9
× ×
10
×
★
11
×
★
12
w w w . i n n o v a i r . c o m
×
★
Communication
failure between
the indoor unit
and outdoor
unit
★ ★
Current
overload
protection
Ο ×
Maximum
current
protection
Ο
★
Communication
trouble
between
outdoor unit
and driver
Ο ×
Outdoor
EEPROM in
trouble
Ο
★
Outdoor
ambient
temperature
too low
protection
a. the communication cable
connection is loose;
b. the communication cable fails;
c. the connection between the filter
board and the outdoor control board
is incorrect or loose;
d. the connection between the filter
board and the terminal is incorrect or
loose;
control board fails;
f. the PFC board fails;
g. the power board fails;
h. the outdoor control board fails.
a. the fan motor runs abnormally;
b. the condenser and evaporator are
dirty;
c. the air inlet and outlet is abnormal
a. the outdoor control board has short
circuit;
b. the drive board has short circuit;
c. the other components have short
circuit
a. the connection wires connect loose
b. the outdoor board or drive board
fails;
a. the EEPROM chip is loose;
b. the EEPROM chip inserted with
opposite direction;
c. the EEPROM chip fails
Outdoor ambient temperature too low
32
TROUBLESHOOTING
e. the indoor