Hisense AS-07UR4SYDDB15, Service Manual, Page: 51 / 59

77
10
× × Ο
★
Communicati
on trouble
between
outdoor unit
and driver
a.
the connection wires connect loose
b.
the outdoor board or drive board is
failure;
11
×
★
Ο ×
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
×
★
Ο
★
Outdoor
ambient
temperature
too low
protection
Outdoor ambient temperature too
low
13
★
× Ο ×
Compressor
exhaust
temperature
too high
protection
a.
the compressor exhaust
temperature sensor is failure;
b.
the refrigerant of the unit is not
enough
14
★
× Ο
★
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
★ ★
Ο ×
Compressor
shell
temperature
too high
protection
a.
the compressor exhaust temperature
sensor connect loose
b.
the refrigerant of the unit is not
enough
16
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
PFC
protection
a.
the PFC is failure;
b.
the outdoor drive board is failure
18
DC
compressor
start failure
a.
the outdoor drive board is failure;
b.
the compressor is failure
19
× × × Ο
Compressor
drive in
trouble
a.
the outdoor drive board is failure;
b.
the compressor is failure
c.
the outdoor control board is
failure