LG DLE3777W - Test 3: Motor Resistance Check

23
Test 3
Motor test
Caution
Trouble Symptom
Measurement Condition
Before measuring resistance, be sure to turn Power off, and do voltage discharge.
(When discharging, contact the metal plug of Power cord with earth line.)
Drum will not rotate; No fan will function; No Heater will work.
Turn the Dryer’s Power Off, then measure resistance.
Is resistance below 1Ω between Idler Switch
terminals?
YES
NO
Does Idle Switch attached to Motor Bracket
operate Level by drum belt?
(Not operating Lever is normal.)
YES
• Replace Idler
Switch.
• Check Idler Assembly.
• Drum Belt cuts off
• Drum Belt takes off
from
• Motor Pulley.
Is resistance below 3Ω between Connector
“WH3-
” (White wire) and “BL2- ” (Yellow wire)?
※
Measure while door is closed.
YES
NO
• Check if Door flame
presses door switch
knob.
• Check Door Switch.
• Check Harness
connection.
Is resistance below 3Ω between Connector
“BL2-
” (Yellow wire) and “BL2- ” (Brown wire)?
NO
YES
• Replace Control.
(Relay check)
• Check Controller
connector.
Is resistance below 1Ω between terminals
of Outlet Thermostat attached to blower housing?
YES
NO
• Replace Outlet
• Thermostat.
(Refer to
‘Component’)
Is resistance below 3Ω between Connector
“WH3-
”
(White wire) and “BL2-
” (Brown wire)?
※
Measure while door is closed.
NO
YES
• Replace Control.
(Relay check)
• Check Controller
connector.
• Check Motor. (Refer to ‘Motor Diagram & Check’)
•
Check if Control Connector is contacted.
Idler Switch Lever
Idler Switch