Whirlpool Duet Dryer Model GGW9200LW0 No heat

[pigseye]

Hi All,

Our Whirlpool Duet Dryer Model GGW9200LW0 has no heat in sensing and manual modes.  There is also no click or igniter glow.  Besides that the dryer operates fine with drum rotation and all options are selectable on the control panel.  LEDs all light up appropriately as well.

It was very dusty inside so it was cleaned out with a vacuum and refrigerator coil brush.  The dryer was unplugged and when plugged back in the PF code showed there was a power failure.

Any suggestions on next steps?

Thanks!!!

 

 

 

 

 

[pigseye]

Update:

I removed the lint trap and lower assembly and cleaned it.  Also removed and cleaned the moisture sensor bars as well.

Checked the exhaust and it is clear.

Could the problem be the Dryer Gas Valve Coils? There are two of them.

Is there a way to test the Gas Valve Coils?

 

Thanks Again

 

 

[pigseye]

Update #3

Removed the igniter and it looks OK and measures ~100 ohms. 

[MrApplianceMatt]

Are you getting 120 volts at the igniter when the dryer is on?

You need to figure out the igniter issue first. The gas valve won't open unless the igniter is pulling a certain amount of current, usually 3.6-4.2 amps. 

[pigseye]

Quote

Just measured it with my Fluke 77.  There is no power at the igniter connection. 

I'm running the dryer without the igniter hooked up so I'm measuring at the connector.   0V AC

 

 

Quote

 

 

 

[pigseye]

Hi Matt,

The dryer is working!  Your tip on no voltage going to the igniter got me looking at the schematic and determining that the fusible link is bad.  Jumpered the fusible link so we can dry the last load of clothes and ordered a new part.

Thanks so much for your help!

 

 

[MrApplianceMatt]

Good stuff! You're welcome.

[Budget Appliance Repair]

13 hours ago, MrApplianceMatt said:

The gas valve won't open unless the igniter is pulling a certain amount of current, usually 3.6-4.2 amps. 

@MrApplianceMatt You need to go back and do a little more studying in your coarse work about gas dryer ignition systems.

Dryers do not relay on the amperage of the ignitor, (the amperage of the ignitor has to do with hot surface ignitor gas oven systems).

Dryers use the flame sensor to sense that the ignitor is glowing and hot enough.  When this condition is true the flame sensor opens, thus removing power from the ignitor and opening the secondary gas valve coil.  The heat from the flame then keeps the flame sensor in an open state while the burner is burning.

[MrApplianceMatt]

5 hours ago, Budget Appliance Repair said:

@MrApplianceMatt You need to go back and do a little more studying in your coarse work about gas dryer ignition systems.

Dryers do not relay on the amperage of the ignitor, (the amperage of the ignitor has to do with hot surface ignitor gas oven systems).

Dryers use the flame sensor to sense that the ignitor is glowing and hot enough.  When this condition is true the flame sensor opens, thus removing power from the ignitor and opening the secondary gas valve coil.  The heat from the flame then keeps the flame sensor in an open state while the burner is burning.

Probably. I see gas dryers about once every 3 years. It’s almost 100 percent electric in SE North Carolina.

[Budget Appliance Repair]

16 hours ago, MrApplianceMatt said:

I see gas dryers about once every 3 years

That would definitely make you kind of rusty on gas dryers