Maintenance Service And Trouble Shooting - Haier GWT900AB Service Manual

C
T rouble-shooting charts
If you replace the computer sequencer without checking the other components carefully,
the computer sequencer may be damaged again. Therefore, please first check
if the other components working normally before replacing the sequencer in maintenance.
No action(The indicator is off)
Confirm that there's no power failure,
and the power plug is inserted reliably.
The power switch is at "On" mode.
Measure the voltage
of the two ends of the power input
of the sequencer.
Pull off
the power
plug
Measure the resistance
between the white wire terminal
in the white plug on top of the wire unit
and the N pin on the power
receptacle.
Measure the resistance
between the brown wire terminal
in the white plug on top of the wire
unit and the brown wire of
the lower part.
Check if the connection
between the fuse and the wires
of the two ends are well?
Connect the fuse and the
wires of the two ends.

MAINTENANCE SERVICE AND TROUBLE SHOOTING

Not exist
The resistance
between the light blue wire terminal
is 0.
in the red plug on top of the wire unit
and the light blue wire of
The resistance
is 0.
Infinite
No
Exist
Replace the sequencer.
Infinite
Measure the resistance
the lower part.
The resistance
is 0.
Replace the
power cord.
Yes
Replace the computer
sequencer.
Infinite
Replace the wire unit.