18
6. TROUBLE SHOOTING
INNOVAIR DC INVVERTER QUANTUM
SERVICE MANUAL
w w w . i n n o v a i r . c o m
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;
ambient temperature sensor fails;
b.
the outdoor
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
outdoor control board fails
c.
the
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