I have a Roper dryer model rex4635ewo and it will run but will not heat it just blows cold air. What can I do to fix this problem?

SOURCE: roper dryer won't heat

first thing is check the voltage between the black and red terminals at the back of the dryer. you should read 240v. then check the voltage between the balck and the white and the red and the white. there should be 120v at each. if all that is good remove the back of the dryer. make sure you unplug it first. then no the lower right you will see the heater. near the top of the heater you will see a red wire and a red/with a white stripe wire attached to the high limit cutout. remove one wier and check the switch for continuity. if you read nothing its bad and thats why there is o heat. Ifnit checks good replace the wire and then remove one red wire from the heater. then check the heater with your meter. most times on the whirlpool products its one of the two that is bad. check the two thing I described and if you still need help feel free to get back to me and we can go from there.Good luck

SOURCE: kenmore model 76712 does not blow heat just cold air

The following link explains how to troubleshoot and dryer "no heat" problem and the common causes:

http://www.fixya.com/support/r630242-dryer_runs_but_not_heat

Read through the link thoroughly, paying particular attention to the section that discusses proper ventilation. Most dryer heat related problems are caused by insufficient air flow which, in turn, causes the dryer to overheat to failure. More commonly, the Thermal Cut-Off (TCO) fails. You will need to check all the components mentioned in order to be sure. If you haven't had your dryer ventilation cleaned or inspected in a while, now would be a good time to do so. Failure to correct any potential existing problems, can cause premature failure of any parts you replace.

If you have questions, or require additional assistance, please let me know, so I can provide you with a viable solution. i hope this helps you.

SOURCE: maytag performa dryer will not heat up

Warning! To avoid personal injury or even death, always disconnect your appliance from its power source--that is, unplug it or break the connection at the circuit breaker or fuse box--before you do any troubleshooting or repair work on your appliance. Also, because some components may have sharp edges, use caution while working on your appliance.

maytag performa dryer Model PDGT910AWW
"No Heat" complaint.

Firstly, make sure that you have selected/ascertained a "Heat" setting, then read the checklist below provided by; www.repairclinic.com
They also provide disassembly diagrams and repair parts..

If your dryer doesn't heat, check these:

Igniter
Gas valve coils
Thermal fuse
Igniter Modern gas dryers use an electric igniter to ignite the gas from the gas valve. When it's working properly, the igniter glows bright orange. When it burns out, the dryer tumbles but there's no heat because the gas can't ignite. When the igniter burns out, you need to replace it. If the igniter is held by a tension bracket, you very well may need to replace the bracket too.

The igniter is inside the dryer housing, near the bottom front, usually in a cone-shaped metal tube (the force cone). It's about 2 inches long. It's mounted to the far end of the burner tube, and it has two wires attached to it--or to the tension bracket, if there is one.

Gas valve coils Watch the igniter. Does it glow bright orange, then shut off without igniting the gas? (When the gas ignites there's a large blue flame.) If so, there may be defective coils on the gas valve. Mounted on the top of modern gas valves, there are black electrical coils. The coils, when energized, open the gas valve. If one or more of the coils are defective, the valve doesn't open and the gas cannot ignite. Because it's often difficult to properly test the coils, it's usually best to replace both (all) of them at the same time.

Thermal fuse On many dryers, there's a thermal fuse (a heat-sensitive fuse that blows if the dryer overheats) mounted to the exhaust duct inside the back cover panel. The fuse is about an inch long. It's usually embedded in black resin and mounted in a white plastic housing.

If the fuse has blown, it has no continuity. When this happens, your dryer either just stops heating, or it doesn't work at all. Be sure to inspect the venting/heating system before replacing the fuse to put the dryer back into operation. (You can't re-set this type of fuse.)