6. TROUBLE SHOOTING
Outdoor
EEPROM in
trouble
★
★
★
a.
the EEPROM chip is loose;
b.
the EEPROM chip is inserted with opposite
direction;
c.
the EEPROM chip fails
Compressor
exhaust
temperature too
high protection
×
O
★
a.
the compressor exhaust temperature sensor
fails;
b.
the refrigerant of the unit is not enough
Outdoor ambient
temperature
sensor in trouble
★
★
×
a.
the outdoor ambient temperature sensor
connect is loose;
b.
the outdoor ambient temperature sensor fails;
c.
the outdoor control board fails
Compressor shell
temperature too
high protection
×
★
O
a.
the compressor exhaust temperature sensor
connect is loose
b.
the refrigerant of the unit is not enough
Anti-freeze
protection with
cooling or
overload
protection with
heating in indoor
unit
×
O
O
a.
the indoor coil temperature sensor connect is
loose;
b.
the indoor coil temperature sensor
fails;
c.
the indoor control board fails
d.
the refrigerant system is abnormal.
Compressor drive
in trouble
O
×
O
a.
the outdoor drive board fails;
b.
the compressor fails
c.
the outdoor control board fails
Outdoor fan motor
locked rotor
protection
O
O
★
a.
the connection of the outdoor fan motor is loose;
b.
there is something blocking the outdoor fan;
c.
the fan motor fails;
d.
the outdoor control board fails
Outdoor coil
anti-overload
protection with
cooling
×
★
×
a.
the refrigerant is too much;
b.
the outdoor fan motor fails;
c.
the outdoor fan is broken;
d.
the condenser is dirty;
e.
the air inlet and air outlet of the indoor unit and
the outdoor unit is not normal
