innovair QUANTUM, User Manual, Page: 25 / 26

INNOVAIR DC INVERTER QUANTUM SERVICE MANUAL
23
6. TROUBLE SHOOTING
13
★
× Ο ×
Compressor
exhaust
temperature
too high
protection
a. the compressor exhaust
temperature sensor fails;
b. the refrigerant of the unit is not
enough
14
★
× Ο
★
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
15
★ ★
Ο ×
Compressor
shell
temperature
too high
protection
a. the compressor exhaust
temperature sensor connect ion is
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 is loose;
b. the indoor coil temperature sensor
fails;
c. the indoor control board fails
d. the refrigerant system is abnormal.
17
PFC
protection
a. the PFC fails;
b. the outdoor drive board fails
18
DC
compressor
start failure
a. the outdoor drive board fails;
b. the compressor fails
19
× × × Ο
Compressor
drive in
trouble
a. the outdoor drive board fails;
b. the compressor fails
c. the outdoor control board fails
20
★
× × Ο
Outdoor fan
motor locked
rotor
protection
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
21
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 are not
normal
22
Compressor
pre heating
process
it is normal mode in cold weather