Burner ignites and goes out repeatedly
SOURCE: After a few heating cycles the burner does not ignite
The problem you are describing is usually associated with a bad gas valve coil. The dryer runs normally until it gets hot, then starts making a strange clicking noise. After it cools down, the dryer runs normally again. The gas valve coils (there are two of them) usually run about $20 a piece. I recommend replacing both of them at the same time just to be sure. I hope this helps.
SOURCE: kenmore gas dryer 80series model 110.c72852101
90% of all gas dryers lighting intermittently is resolved with new coil packs on the gas valve. The coils are replacable fairly easily and inexpensive.
SOURCE: Dryer heats slowly
When dryer heats too slow, that means that there is a problem either with the heating element, the thermostat, or the vent.
See the following suggeations from Repairclinic:
Drying is too slow
It normally takes about 45 minutes for a dryer to dry a full load. If your dryer is taking more than an hour, check these.
Vent
Heating element
Internal ductwork
Cycling thermostat
Vent
Frequently
there's an obstruction in the vent duct from the dryer to the outside
of the house. For the dryer to heat properly, the duct must be clean
and clear of lint or any other substance.
Heating element
Your
dryer's heating element may be partially burned out. If it is, your
dryer still heats, but at such a low temperature that it takes three or
four times as long to dry the clothes. If the element is partially
burned out, replace it.
Internal ductwork
Your
dryer has some internal ductwork. If it gets clogged, your dryer can't
dry properly. In most dryers, to get to the internal ductwork to clear
the clog, you have to substantially disassemble the dryer. A quick way
to check for internal clogs is to remove the lint filter and use a
flashlight to inspect the inside of the duct. If it looks clogged and
you can't clear it using your vacuum, contact a qualified appliance
repair technician.
Cycling thermostat
Although
this isn't a common problem, one of the thermostats that controls the
temperature in your dryer may break and cause the dryer to heat poorly.
If so, you need to replace it. The thermostat is usually a small,
round, black device mounted to an oblong steel plate. The plate is
mounted to the internal ductwork with two screws.
SOURCE: burner not stayinyg lit
since burner is igniting, it probably is OK. next check is limit switch. this switch shuts the gas off if it senses excessive heat (blocked vent ... usually caused by lint) limit switches themselves MAY go bad ... bu rarely PS check to make sure the vent is blowing exhaust to outside of house (i've seen birdnests in the exhaust port cause your problem)
SOURCE: Kenmore dryer 110 708 12990 Igniter glows, but
replace the two coils on the gas valve use the maytag coil kit much cheaper and same part
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