Failure:display Nothing Troubleshooting - Haier HW-E1470TVE Service Manual

Front Load Washing Machine
Error message. Water level exceeds protection value.
Troubleshooting:
Check if water switch hose and air collector
are jammed
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
and , is it 0? Check the resistance
between and , is it infinite?
N
Without power ,connect inlet pipe to inlet
vavle,then open the tap and observe if water
is entering in dispenser
N
Without starting but electrifying, measure the
import voltage of inlet valve, is it between
AC 220-240V?
HW-E70TVE SERIES Examination & Troubleshooting
Failure: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
N
N
22
Model:HW-E70TVE SERIES
Clean water switch hose and air
Y
collector
Replace water pressure switch
Y
Replace inlet valve
Y
Replace
Y
computer
board
Repair power supply
Press the power switch
N
Make sure power supply cable assembly is
N
connected well and then replace power
switch.