Whirlpool Duet gas dryer model # GGW9250PW0, s/n MS0303753 no heat
Posted 21 November 2010 - 02:11 PM
Whirlpool Duet Gas Dryer Mod# GGW9250PW0, S/N MS0303753 - no heat ...
So, here's the deal per the m'em sahib; clothes not drying but everything else appears normal.
Hoping it was something simple like last time (Thermal Fuse) I replaced the TF (I bought two at the time!). Nah, that didn't do it. Actually, it fired as normal and finished drying a load of clothes. But the next load was cold, no heat.
I pulled the file and diags from my last effort here and observed...
The dryer enters diagnostic mode with no errors, door switch, moisture sensor all work, that is, they passed their respective tests.
The drum spins (no apparent motor problem) and the control panel starts and stops the unit like it should.
Termistor resistance is 8.9 +/- @ 75 degrees, which seems to be in line.
Gas valve test gave resistance readings of:
1402 ohms across terminals 1 & 2 (specs call for 1365 +/- 25)
569 ohms across terminals 1 & 3 (specs call for 560 +/- 25)
1295 ohms across terminals 4 & 5 (specs call for 1220 +/- 25)
Are these within allowable tolerances?
What I see when I watch it try to start with the toe panel removed is the drum starts to turn, the ignitor glows, the gas enters and ignites and burns for perhaps 20-30 seconds then shuts off. Everything else continues, i.e., the drum still turns, the display still looks normal, just not gas/heat. I will come back and repeat the sequence but the gas never stays on for very long.
What am I missing?
Posted 21 November 2010 - 03:00 PM
Do you have the Cabinet assembled (for correct air-flow/thermal devices)
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Posted 21 November 2010 - 04:50 PM
Well, the toe panel is off and the top is off. Other than that, all is together.
Another thing I noticed is that, when the flames come on, there seems to be a tiny jet of flame that comes out from under the ignitor cap, if you will, and is aimed at the high limit thermostat. It seems that within a few seconds of exposure, the gas turns off.
I may be overthinking that, as I don't know what normal operation looks like when the flame is on...
Posted 21 November 2010 - 05:55 PM
I had the blower cover and lint screen out. I replaced both of those and ran a cycle and it's been running and drying with a steady flame for over 10 minutes. Keeping my fingers crossed.
But, when I replaced the thermal fuse, it was all together when it finished a load and then went cold again. Maybe the removal and replacement of the various sensors to inspect, gently clean and test helped a bit?
Sometime later...well, false alarm. It dried the sheets, but seems like it was on about 20 minutes (my wife like the timed dry) and when I checked it less than 10 minutes later, it had shut off, but the sheets were dry. She pulled them out and turned them inside out (fitted king sheets) and put them back in to finish drying.
This time, the ignitor came on, but there is a loud click, no gas, and the ignitor turns off. I timed the ignitor and it seems to try every minute or so, but no gas to ignite.
Tried it on 'normal' mode, but the same; ignitor attempts but no gas.
Posted 21 November 2010 - 07:30 PM
Posted 30 November 2010 - 08:47 AM
Many thanks, all is well here again!
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