Examination & Troubleshooting; Display Nothing; The Computer Is Power On And Display Right,But The Dryer No Action - Haier HLTD500AGW Service Manual

SERVICE MANUL
Model No.HLTD500AGW
9-2. Examination & Troubleshooting

9-2-1. Display nothing

Troubleshooting:
Measure the power supply ,is it exists
120V AC voltage?
Y
Cut off the power. Check if the power
line and the wire unit connecting is ok.
Y
Check if the wire connecting of the wire
unit and PCB is disconnection
N
Check if the powerline the wire unit
and the PCB is good

9-2-2. The computer is power on and display right,but the dryer no action

Troubleshooting:
Cut off the power .Check if the belt is
break off or the connecting of the
motor belt switch is loose
N
Check if the tensive arm unit is installed
well
Y
Check if the belt switch is good.
Well: the resistance is 0 ;
Broken: he resistance is infinite
Well
Check if the back-up thermostat is well.
Well: the resistance is 0 ;
Broken: he resistance is infinite
Well
Check if the wire connecting of the motor
is ok.
Y
Check if the wire and the PCN is
well
N
N
Connect the wire properly
Y
Replace the broken part
N
Y
N
Broken
Broken
N
- 30 -
Issue
Rev.
Repair power supply
Connect the wire properly
Replace the belt or connect the wire
properly
Reinstall the tensive wheel unit and try
rotating the tub manually
Replace the belt switch
Replace the back-up thermostat,
insure that the exhaust system is good
Connect the wire properly