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Haier HSU-12LV03 Service Manual page 11

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

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