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
★
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
★
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
O
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
O
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
O
★
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 condenser is dirty;
e.
The air inlet and air outlet of the indoor unit and
the outdoor unit is not normally
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