LG GD1329CGU Service Manual page 63

est 7 AS valve test - as Type
ARNING
!
¥ When measuring power, be sure to wear insulated gloves to avoid an electric shock.
¥ Failure to follow these instructions can result in death or electric shock.
Trouble Symptom
Measurement Condition
Valve 1
Igniter
Valve 2
hile operating, heating will not work.
Drying time takes longer.
ith dryer power on
Power on & start (Normal Cycle)
hen measuring Valve 1 voltage,
More than DC 90V?
Igniter operates?
(after 1 minute, igniter becomes reddish)
hen measuring Valve 2 voltage, Value is more
than DC 90V? (10 sec after Igniter off)
hen measuring terminal resistance on Valve 1 and
Valve 2, valves are more than1.5 ~ 2.5k ?
(Measure after off )
If valve 1 and Valve 2 are under DC 10V, valves are
off?
¥ Harness check
¥ Controller change
NO
YES
YES
NO
NO
YES
63
Check thermostat
NO Hi limit Safety
Check igniter &
NO
flame detect
Check gas
connection or gas
YES
supply
Change valve
YES
¥ Change valve
NO