Haier HSU-12LV03 - Error Code Diagnostics

Error code of indoor
display
reasons ways and means solutions tools
E1
Indoor
temp.Sensor
is shorted out
or opened
circuit
Check the sensor of
indoor ambient
temperatrue,if the
resistance value is 0
or ∞, the sensor is
abnormal
Change the
sensor
Multimeter
E2
Temp.
sensor of
heat
exchanging
is shorted out
or opened
circuit
Check the sensor of
indoor coilpipe,if the
resistance value is 0
or ∞, the sensor is
abnormal
Change the
sensor
Multimeter
E4
Data error or
no EEPROM
Check whether the
EEPROM is
installed properly
Change the
EEPROM
Multimeter
and
electriciron
E14
Indoor fan
motor don’t
feed back
Check whether
indoor motor has
80~170V voltage,if it
has,wiring board is
normal,then check
whether the optical
SCR is good,replace
it if it has flaw;else
check whether there
are something
wrong with
connecting
line,indoor fan motor
cpacitor and coil
assembly
Change the
capacitor or
optical SCR
or
connecting
line or
indoor PCB
Multimeter
TROUBLE SHOOTING
Air Conditioner
Edition:2006/8/20
7