Troubleshooting - Haier HW50-1002W Service Manual

SERVICE
MANAUL
HW50-1002W

Troubleshooting:

Check if water is emptied
N
Check if drain pump acts by touching
pump position
N
Cut off the power and choose spin
program to start ,then check the import
voltage of drain pump, is it between
AC 220-2240 V?
N
Cut off power and pull out water level
pressure switch wire connection. Set
spin program to start. Check the export
voltage to drain pump, is it between AC
220-240V?
N
Replace PCB
Error 3
The start indicator lighted on 0.2s andoff 0.2s for 3 times,repeat 4s later .
Error message:Temperature sensor is not properly connected or damaged (display at the end of a
program).
Troubleshooting:
Cut off power and measure the resistance
multimeter
of temperature sensor by
it between 5-14kΩ ?
Y
Check if NTC is connected properly
Y
Check the white wire and black wire of NTC,
are they connected well?
Y
Disconnect the white wire and black wire
from PCB, and measure if the resistance
between white wire and black wire of PCB, is
it infinite?
N
Replace PCB
Cut off power and water level pressure switch wire
connection, measure the resistance of 11 and14 pin,
is it infinite? If not, it is water level pressure switch
Y
failure and replaces it. If it is, then repair and check
PCB and wire as followed.
The wire between PCB
Y
and drain pump is not
connected properly.
Replace the wire.
, is
Front Load Washing Machine
Check if drain pump or
drain pipe is jammed,
Y
And open the filter and
clean
Y
Replace drain pump
NTC exist open circuit. Replace it
N
Connect NTC well
N
Connect all wires well
N
Replace wire
Y
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