My maytag centenial dryer wont heat. I've replaced all of the switches the heating element the motor and the fan. All of my wires are good and connected dryer turns on but still no heat

SOURCE: hotpoint wd62 washer dryier (aquarius 1200)

i am a retired engineer of 20 years, and its about a year since i worked on combination washer/dryers but if the heater elements fine and power comes from timer there must be cut out somewhere around where it should warm up, look all round the machine one may be hidden or hard to spot there maybe about 3 one of them one of them could be a trigger device (you can press a button to reset it) that style is a very small cube about the size of a sugar lump with2 spades on it, others look like a small flat oval or round shape the size of a five pence piece with 2 spade wires on them, remove the plug from wall and remove these spades and check the contacts for continuity, you need not remove from machine to do so, no circuit + no heat, replacement item not expensive, thats where to start based on the information given, check the sensors you mention again, it sounds like your so close, good luck and work safe

SOURCE: Maytag dryer heating element does not turn off when tumbling stop

your timer is bad,the cost of a timer is close to a new dryer.

SOURCE: No heat in a Kenmore stackable washer dryer

there should be a small fuse on the heater box,if that is not working the element will not work also-mike

SOURCE: AMANA dryer model ALE643RBW burnt wire

I would think that:

Low voltage. A lack of proper voltage increases the current flow (amps) and can cause overheating, thus, a burnt wire. Remember, the lower the voltage, the higher the amps.

Bad connection. Poor connections can cause small amounts of arcing, thus burning the connection. This adds resistance to the circuit which causes a possible voltage drop and, again overheating due to higher amps.

Since all that equipment is on the same circuit, I would really think it is a voltage drop situation. With everything calling for power at the same time, the breaker trips. In some cases, it may be just enough for the breaker not to trip but still have a low voltage situation.

There is the possibility of an over current, such as a power spike from the power company but it would have to happen more than just a time or two.
And the outside chance that lighting got into the system when it struck something close to you home but it, in almost every case, would destroy something else, usually electronic. (This has happened to me. Trashed my dryer, dishwasher, and answering machine.)

Good luck and hope this helps. Le me know how you come out.

SOURCE: Hotpoint dryer nvl333eyoww, Motor runs, heating

Did you ohm out the thermal overload?