9
Maximum
current
protection
a.
The outdoor control board is short
circuit;
b.
The drive board is short circuit;
c.
The other components is short
circuit
10
★
x
x
Communication
trouble
between
outdoor unit
and driver
a.
The connection wires connect
loose
b.
The outdoor board or drive
board is failure;
11
x
x
Outdoor
EEPROM in
trouble
a.
The EEPROM chip is loose;
b.
The EEPROM chip inserted with
opposite direction;
c.
The EEPROM chip is failure
12
Outdoor
ambient
temperature
too low
protection
Outdoor ambient temperature too
low
13
x
★
Compressor
exhaust
temperature
too high
protection
a.
The compressor exhaust
temperature sensor is failure;
b.
The refrigerant of the unit is not
enough
14
★
★
Outdoor
ambient
temperature
sensor in
trouble
a.
The outdoor ambient temperature
sensor connect loose;
b.
The outdoor ambient temperature
sensor is failure;
c.
The outdoor control board is
failure
15
x
★
Compressor
shell
temperature
too high
protection
a.
The compressor exhaust
temperature sensor connect loose
b.
The refrigerant of the unit is not
enough
16
★
x
★
Anti-freeze
protection with
cooling or
overload
protection with
heating in
a.
The indoor coil temperature
sensor connect loose;
b.
The indoor coil temperature
sensor is failure;
c.
The indoor control board is failure
d.
The refrigerant system is
abnormal.
17
x
★
x
PFC protection
a.
The PFC is failure;
b.
The outdoor drive board is failure
18
x
★
★
DC compressor
start failure
a.
The outdoor drive board is failure;
b.
The compressor is failure
-
2
5
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