Hisense AS-07UR4SYDDB15, Service Manual, Page: 47 / 59

73
driver
Outdoor
EEPROM in
trouble
★ ★ ★
a.
the EEPROM chip is loose;
b.
the EEPROM chip inserted with opposite
direction;
c.
the EEPROM chip is failure
Compressor
exhaust
temperature too
high protection
´
×
O
Ο
★
a.
the compressor exhaust temperature sensor is
failure;
b.
the refrigerant of the unit is not
enough
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
Compressor shell
temperature too
high protection
´
×
★
Ο
O
a.
the compressor exhaust temperature sensor
connect loose
b.
the refrigerant of the unit is not enough
Anti-freeze
protection with
cooling or
overload
protection with
heating in indoor
unit
´
×
O
Ο
O
Ο
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.
Compressor drive
in trouble
O
Ο
´
×
O
Ο
a.
the outdoor drive board is failure;
b.
the compressor is failure
c.
the outdoor control board is failure
Outdoor fan motor
locked rotor
protection
O
Ο
O
Ο
★
a.
the connection of the outdoor fan motor is loose;
b.
there are something block the outdoor fan;
c.
the fan motor is failure;
d.
the outdoor control board is failure
Outdoor coil
anti-overload
protection with
cooling
´
×
★
´
×
a.
the refrigerant is too much;
b.
the outdoor fan motor is failure;
c.
the outdoor fan is broken;
d.
the condensor is dirty;
e.
the air inlet and air outlet of the indoor unit and
the outdoor unit is not normally