LG D5988B, Service Manual, Page: 27 / 42

26
Test 7
GAS Valve test - Gas Type
Caution
Trouble Symptom
Measurement Condition
When measuring power, be sure to wear insulated gloves, to avoid electric shock.
While operating, Heating will not work.
Drying time takes longer.
With dryer power on
• Harness check
• Controller change
When measuring terminal resistance on “Valve 1”,
“Valve 2”, Value is more than1.5 ~ 2.5kΩ?
(Measure after Off )
NO
YES
• Change Valve
• Check thermostat
Hi limit Safety
Igniter operates?
(after 1 min, Igniter becomes reddish)
YES
NO
• Check Igniter &
Frame detect
When measuring Valve 2 voltage, Value is more
than AC 90V? (10 sec after Igniter off)
NO
YES
• Check Gas
connection or
Gas supply
When measuring Valve 1 voltage,
More than AC 90V?
YES
NO
Power On & Start (Normal Cycle)
NO
Igniter
Valve 2
Valve 1