Trouble Shooting Charts; No Action(The Indicator Is Off) - Haier HLP21N Service Manual

Service Manual
Model No: HLP21N
6-3 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 sequencer in

6-3-1 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.
Measure the
voltage of the two ends of the
power input of the sequencer
Pull off the power plug
Check if the fuse is burnt
Check if the
connection between the fuse
and the wires of the two ends are
the resistance
between the inner terminal of the
blue wire connected to the red twin-core
plastic part of the wire unit
and the power
The resistance is 0
the resistance
between the blue single-core
plastic part inner terminal of the wire unit
and the brown wire
(connecting to
Replace the wire unit
Not exist
N
well
Y
Measure
terminal connected to the red twin-core
Measure
powe
The resistance
is 0
infinite
Exist
Replace the sequencer
Y
Replace the fuse
N
Connect the fuse and the
wires of the two ends
infinite
Measure
the resistance
between the blue wire inner
plastic part of the wire unit and the
blue wire (connecting to
power cord)
The resistance is 0
Replace
the power cord
-19-
Issue
Rev.
At the same time please check if
the other electric components are
infinite
Replace the wire unit