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Whirlpool Gas Dryer Runs, Start Heating then gas heat goes off - stays off...

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Gas dryer starts/runs ok AT START... but heating stops after about 5-10min (with tumbler/blower still going). To be clear, sequence

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Old 08-16-2008, 12:55 PM
drs drs is offline
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Default Whirlpool Gas Dryer Runs, Start Heating then gas heat goes off - stays off...
Model Number: SGD5800HQ0   Brand: Whirlpool   Age: 5 - 10 years   

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Gas dryer starts/runs ok AT START... but heating stops after about 5-10min (with tumbler/blower still going). To be clear, sequence is:
- dryer starts/runs AS NORMAL for a minute or so...
- then i can see glow/igniter start...
- gas flame lights & runs as normal for ~5-10min...
> but then stops & does not relight (although I've seen glow/igniter heat up)
- dryer continued tumbling on with cool air.

:-(

Other info:
* if allowed to cool down for say 5min, will restart above sequence
* if a quick 1min stop/restart tried, there is no gas re-lighting (although glow/igniter goes on for a few seconds)

* I suspect the sensor (on heater section), yes/no? It measure less than 1ohm accross whether hot OR cold.

* i have not tested/measured other thermostats...

Thx.

DRS
Can see the glow/igniter


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  #2 (permalink)  
Old 08-16-2008, 01:10 PM
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Hi, Check the thermostats for continuity. Unfortuneately the model number posted I can locate anywhere.
Can you please double check that.
Nat
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Old 08-16-2008, 01:37 PM
drs drs is offline
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Ok thanks, I'll check them. Model number is Whirlpool SGDS800HQ0 (think i might have intially typed "5" vs. "S"). Whirlpool gas dryer with Costco/Kirkland badging.
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Old 08-16-2008, 02:18 PM
drs drs is offline
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Found that:
-Sensor continuity good, at ~0 ohms (still);
-Main thermostat, has 4 leads;
> with ~0 ohms between two of them and
> approx. 7k ohms between the 2nd set of leads.
-Backup thermostat at 0 ohms
Whether hot or cold, the resistances above do not seem to change.

Let me know that you think.

Thx.

DRS
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Old 08-16-2008, 02:32 PM
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did you check them with wires attached or detached?
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Old 08-16-2008, 02:57 PM
drs drs is offline
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It was a detached measurement...

Add'l. info: Also, when dryer unning, no voltage DROP accross any of the (three) sensors/thermostats... (measures 117vac at each terminal)...
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Old 08-16-2008, 03:11 PM
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I'd have to say the regulator is going out.
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Old 08-16-2008, 07:45 PM
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DRS,

According to your description, most likely the problem with your dryer is a bad gas valve coils.

- The part number for the kit of coils is AP3094251

Here are the break down diagrams for the Whirlpool dryer Model SGDS800HQ0

Gene.
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Old 08-17-2008, 07:48 AM
drs drs is offline
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Gene & ibertyappl;

Are you guys talking about the same part; coils / regulator?

According to your description, most likely the problem with your dryer is a bad gas valve coils. ( AP3094251 ). Diagrams for the Whirlpool dryer Model SGDS800HQ0.

Thx.

DRS
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Old 08-17-2008, 08:08 AM
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The coils are on top of the regulator. You can see them on the break down of your dryer.
Hope that helps.
Gene was more help than I was. Glad he jumped in!
Nat
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