Haier HW50-1010W Service Manual page 25

SERVICE MANUL
HW50-1010W/HW50-1010S
Draw out the dispenser and check if
water is entering
N
Turn on power, and set pre-wash
mode, then start. Check the import
voltage of electromagnetic valve by
multimeter is it between
220-240V?
N
Check if export voltage from PCB to
electromagnetic valve, is it between
AC 220-240V?
N
Replace PCB
Error 7
The start indicator lighted on 0.2s andoff 0.2s for 7 times,repeate 4s later .
Error message. Motor overheat protection or is damaged.
Troubleshooting:
Cut off power and check if motor wires
are connected well
Y
Measure if the resistance of motor
binding by multimeter, is it as followed?
[1.68±8%Ω (at 20°C)]
5 -10
8 -9[2.00±8%Ω (at 20°C)]
;
Y
Pull out the wire connection of motor
and driving computer board. Then
check if circuit is open by multimeter
AC
Y
N
;
;
Y
Front Load Washing Machine
Observe
height of drain pipe
not reach 80 cm. If
water level pressure
Y
switch and the hose
is leaking gas
Electromagnetic valve must be broken, please
replace it.
Y
The wire connected PCB and inlet valve is not
properly. Please reconnect it or replace it.
Reconnect well
N
Put the motor in normal temperature
about ten minutes, and then test
again. If the resistance is natural, it
is caused by overheated protection.
Then
overload, abnormal voltage. If not,
please replace motor
Repair wires
２５
if the
check and deal with