Trouble-Shooting Charts; No Action (The Indicator Is Off) - Haier LMA2120WBAB0 Service Manual

Service Manual
Model No:MABE-1789

6-2. Trouble-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 computer sequencer in maintence.

6-2-1 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.
of the two ends of the power input
Pull off
the power
plug
Measure the resistance
between the light blue wire terminal
in the white plug on top of the wire unit
and the N pin on the power
The resistance
is 0
Measure the resistance
between the brown wire terminal
in the white plug on top of the wire
unit and the brown wire of
Check if the fuse is burnt?
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.
Measure the voltage
of the sequencer
Not exist
receptacle
the lower part.
The resistance
is 0
Infinite
No
No
Exist
Replace the sequencer.
Infinite
Measure the resistance
between the light blue wire terminal
in the red plug on top of the wire unit
and the light blue wire of
the lower part.
The resistance
is 0
Replace the
power cord.
Yes
Replace the fuse.
Yes
Replace the computer
sequencer.
17
Issue
Rev.
Infinite
Replace the wire unit.
At this time please chenck if the other
electric components work normally.