Haier HW-E1470TVE, Service Manual

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Front Load Washing Machine Model:HW-E70TVE SERIES
22
Error message. Water level exceeds protection value.
Troubleshooting:
HW-E70TVE SERIES Examination & Troubleshooting
Failure:Display nothing
Troubleshooting:
N
Check if water switch hose and air collector
are jammed
Clean water switch hose and air
collector
N
Pull out water switch inserts and turn on
power, then set wash mode. While water
is entering at the position of 1/4 glass
window, check the resistance between
①
and
②
, is it 0? Check the resistance
between ① and ③ , is it infinite?
Replace water pressure switch
Y
Y
Without starting but electrifying, measure the
import voltage of inlet valve, is it between
AC 220-240V?
Replace
computer
board
Y
N
Without power ,connect inlet pipe to inlet
vavle,then open the tap and observe if water
is entering in dispenser
Y
Replace inlet valve
Measure the power supply ,is it exists
220V-240V AC voltage ？
Y
Repair power supply
N
Press the power switch
Is power switch on?
Y
N
N
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?
N
Make sure power supply cable assembly is
connected well and then replace power
switch.
Y