Tip & How-To about Dryers
Once the temperature drops the operating/control thermostat will close and complete the circuit to the gas valve assembly to cause the glow bar igniter to begin glowing until the flame sensor opens which causes the solenoid on the gas valve to energize and open the gas valve which will ignite from the glow bar igniter. If you find the glow bar igniter glowing and then fading back off with out any burner ignition would indicate weak solenoid coils on the gas valve and both coils will need to be replaced.so if you have no heat and when you start the dryer,listen to it,if you don't hear a click when it starts you have a bad thermal fuse and the igniter won't glow and all you have to do is check the thermal fuse with a meter,if you have heat at first and then no heat after a few minutes you have bad gas coils,the coils when they start to fail will work until they heat up then they won't open the gas valve and no flame,when they cool they will work again,if the igniter stays glowing but no flame the sensor is bad,and if the igniter doesn't glow check it with a meter for continuity,if open change it out.if the igniter glows and then goes out you still could have a bad gas coil,you'll have to check them with a meter,if they're good you either have a bad gas valve or the gas is off.if the gas is on when the igniter glows if you tap on the gas valve it could lite and sometimes when the valves are bad they chatter,or you might smell gas before the valve totally fails,hope this helps you out.
Posted by Sal De on
oven control supplies voltage to the oven igniter/gas valve circuit. When the
oven control is set to Bake, voltage is supplied to the oven igniter which
should glow bright red to almost white hot. Once the igniter comes on and
begins to glow it must pull enough current to cause the gas valve to open so
the burner can ignite from the igniter. I added an image below with the theory
of operation. Click this link:--http://media.fotki.com/1_p,swbbsqrsgstsqkkxgtqsskgwtqkq,vi/wrgtsbrktxwdfwfbgdg/1/1303472/5961857/image5576034710104836299img-or.png
the broiler drawer and then set the oven control to bake and watch to see if
the glow bar igniter glows or not. If it does not glow, the failure could be a
broken Igniter, failed oven control board or gas valve. If the igniter is
glowing red, then it can be possible that gas valve is faulty. To see how
igniter looks. See the fig below:--
To order this part click the link below:--
Also to confirm, check to see if the igniter is getting 120 volts
when it's turned on. If it gets 120 volts, then your safety gas valve is bad
because it's not letting the neutral go through. Otherwise, if it's NOT getting
120 volts, your control board shorted out and you need a new control board.
But as you mentioned that control board is replaced. So igniter should get 120 volts. If valve is faulty. But if igniter is not glowing then its faulty igniter confirmed.
To see how gas valve looks,
please click the link below:---
In most of the cases the igniter is faulty, because gas
valve getting faulty is very rare. But still getting the voltages checked, will
confirm. These will help. Thanks. Helpmech.
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