LG GD1329CGS Service Manual page 57

Test 7
GAS valve test - Gas Type
WARNING
!
• When measuring power, be sure to wear insulated gloves to avoid an electric shock.
• Failure to follow these instructions can result in death or electrical shock.
Trouble Symptom
Measurement Condition
Valve 1
Igniter
Valve 2
While operating, heating will not work.
Drying time takes longer.
With dryer power on
Power on & start (Normal Cycle)
When measuring Valve 1 voltage,
More than DC 90V?
Igniter operates?
(after 1 minute, igniter becomes reddish)
When measuring Valve 2 voltage, Value is more
than DC 90V? (10 sec after Igniter off)
When measuring terminal resistance on Valve 1 and
Valve 2, valves are more than1.5 ~ 2.5kΩ?
(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
56
• Check thermostat
NO
Hi limit Safety
• Check igniter &
NO
flame detect
• Check gas
connection or gas
YES
supply
YES
• Change valve
NO
• Change valve