Examination & Troubleshooting; Display Nothing; No Water Inletting - Haier HW-D1270TVE/ME Service Manual

SERVICE MANUAL
HW-D1270TVE/ME
9-2. Examination & Troubleshooting

9-2-1. Display nothing

Troubleshooting:
Measure the power supply ,is it exists
220V-240V AC voltage？
Y
Is power switch on?
Y
Press power switch and check the
voltage between two pins of power
switch. Is there 220-240V AC voltage
between blue wire and brown wire?
Y
Cut off power and check if plugs are
connected well by pulling the plug of
computer board.
Y
Check if power plug exists 220V-240V AC
voltage at the import pin

9-2-2. 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 220-240V at import pin
of electromagnetic valve
N
N
N
Haier Washing
Repair power supply
Press the power switch
N
Make sure power
assembly is connected well and then
N
replace power switch.
Insert the plug well and test
Y
N
Replace PCB
Open tap or wait for normal water
Y
pressure
Reconnect inlet pipe.
Y
Clean filter
Y
Replace electromagnetic valve
Y
Machine
２５
supply cable