Test 7 Gas Valve Test - Gas Model - LG DLE9577WM Service Manual

Test 7
GAS Valve test - Gas Type
Caution
Trouble Symptom
Measurement Condition
Valve 1
Igniter
Valve 2
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
Power On & Start (Normal Cycle)
When measuring Valve 1 voltage,
More than DC 90V?
Igniter operates?
(after 1 min, 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
32
• Check thermostat
NO
Hi limit Safety
• Check Igniter &
NO
Frame detect
• Check Gas
connection or
YES
Gas supply
YES
• Change Valve
NO
• Change Valve