I am working on a Maytag gas dryer DG712. It only heats when it wants to for brief 10 minute cycles...not consistent except that it stops heating at some point in a cycle.
Answer BubbleBoy, Hopefully the issue is a weak set of gas valve coils, 279834, You'll want to start the dryer on a heat setting/cycle and allow it to run 10 or 15 minutes, the remove the success panel in the right front corner and observe the gas valve operation. The glow bar should glow for 30 or so seconds, start to fade and the gas burner should ignite. If the burner doesn't ignite, suspect the gas valve coils. If all's ok, you'll have to suspect the Y305945 control switch. There are two momentary contact circuits in the switch, if they get stuck closed, the dryer can quit heating, and in some cases the dryer won't shut off at the end of the cycle.
What is the purpose of the cut-off-T switch in this Maytag Dryer the dryer runs and just keep getting hotter & hotter replace the hi limit thrr. but that did not solve the problem looking to replace the cut-0ff-T switch since everything else check out ok wanted to double check before ordering part.
Thanks In Advance
Answer Fitz, The "thermal cut offs" 307473 307473 (your dryer has two, one on the blower housing and one on the heater housing) are "one shot" fuses, if the circuit "opens" due to an over heat issue, the dryer won' start or heat. It's not likely a thermal fuse/cut off issue. At this point, you'll need to check the heater element, and make sure it's not shorted to ground, and remaining partially energized, and heating. Also test the cycling thermostat, a "closed" circuit across the two large, bottom terminals, and a resistance of 2400 ohms across the two small center terminals. When you heat the thermostat the circuit should "open" at 155 dgrs.