Failure:display Nothing Troubleshooting - Haier HWD1000 Service Manual

HWD1000 Examination &
Failure:Display nothing
Troubleshooting:
Measure the power supply ,is it exists
120V AC voltage
Y
Is power switch on?
Y
Press power switch and check the voltage
between two pins of power switch. Is
there 120V AC voltage?
Y
Cut off power and check if plugs are connected
well by pulling the plug of display board.
Y
Check if power plug exists 120V AC
voltage at the import pin
Failure:no water inletting
Troubleshooting:
Is the tap shut off or the water pressure
too low?
N
Check if water is leaking from washer
connection, especially between inlet pipe
and tap. to make sure of no bends.
N
Check if filter of electromagnetic valve is
jammed
N
Choose pre-wash program and start
Check if there is 120 V at import pin
of electromagnetic valve
N
Is there open circuit
electromagnetic valve
N
Choose pre-wash program and start
then check if there is 120 V at export
pin of electromagnetic valve
Automatic Drum Washing Machine
Troubleshooting
120V
betw een
Y
120V
Repair power supply
N
Press the power switch
N
N
Insert the plug well and test
N
Replace display board
N
Y
Y
Y
Y
N
Page25
Model:HWD1000
Make sure power supply cable assembly is
connected well and then replace power
switch.
Open tap or wait for normal water pressure
Reconnect inlet pipe.
Clean filter
Replace electromagnetic valve
Reconnect the wire
Replace display board