Hisense AMS-07UR4SNVT4 Service Manual page 126

6. TROUBLE SHOOTING
Compressor drive in
19
trouble
Locked rotor protection
20
for outdoor fan motor
Outdoor coil anti-overload
21
protection with cooling
Indoor ambient
33 temperature sensor in
trouble
Indoor coil temperature
34
sensor in trouble
Communication in trouble
36 between the outdoor unit
and indoor unit
38 Indoor EPROM in trouble
Indoor fan motor running
39
in trouble
Indoor unit detecting
41
failures by zero-crossing
Note:
● If indoor unit could not receive the signal from outdoor unit in 12 minutes consecutively, then power
to outdoor unit would be cut 1 minute later; after that, 3 minutes later, indoor unit would try to power
a.the compressor power cord connect loose or incorrect;
b.the outdoor drive board(IPM) is failure;
c. the outdoor control board is failure
d.the compressor is failure
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
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
a.the indoor ambient temperature sensor connect loose;
b.the indoor ambient temperature sensor is failure;
c.the indoor control board is failure
a.the indoor coil temperature sensor connect loose;
b.the indoor coil temperature sensor is failure;
c.the indoor control board is failure
a.the communication cable connect loose;
b.the communication cable is failure;
c.the connection between the filter board and the outdoor
control board is incorrect or loose;
d.the connection between the filter board and the terminal
is incorrect or loose;
e.the indoor control board is failure;
f.the PFC board is failure;
g.the power board is failure;
h.the outdoor control board is failure.
a.the EEPROM chip is loose;
b.the EEPROM inserted with opposite direction;
c.the EEPROM chip is failure,you should change the indoor
control board.
a.the connection of the indoor fan motor is loose;
b.there are something block the indoor fan;
c.the fan motor is failure;
d.the indoor control board is failure
the indoor control board is failure