Question about GE Profile Harmony DPGT750GC Gas Dryer
The drum slows down, then returns to normal speed after a minute or two. it does this constantly. There is no heat, the flame ignites and shuts down after 20 or 30 seconds. I am wondering if the motor is going bad and the speed inconsistancy is being picked up by the rotation/centrifical sensor, causing the unit to shut down the flame...not to cause a fire.
Am very sorry to hear about your troubles but I happened to run across something that might help you. I realize its a bit lengthy but it could save you loads if you can diagnose it yourself and not have to pay a technician.
First, in many cases, the dryer actually IS heating, but there’s just not enough airflow out the vent to take advantage of it, so the end result’s the same as ‘no heat’. So first determine that there’s a strong flow of air out the vent. I can’t stress this enough - low airflow’s the no. 1 cause of dryer problems, not to mention dryer fires. Then check if there’s any heat in the drum when running empty.
If there doesn’t seem to be any heat at all, first check for 240V present at the dryer. I can tell you that many hours have been wasted over the years by not *doing this first*! Neglecting this is probably THE most common mistake of the novice appliance tech (and some pros who should know better! <g> ).
If you have a voltmeter or 240V bulb, just check for 240V at the dryer term. block, and you will save some aggravation and possibly a service call.
If you have no way to test this, or you are at all uneasy about messing with 240V (before proceeding, check out this disclaimer), just go to your breaker box and throw the dryer breaker off/on several times. (If your dryer is connected with fuses, replace both of them and try it again.) Sometimes - just sometimes - resetting the breaker will restore 240V, especially in damp basements.
How you proceed from here depends on your abilities. I’d probably suggest calling a pro if you’ve proven 240V to the machine, there definitely is no heat, and there’s plenty of air out the vent. A pro sees this problem every day and can usually diagnose it in 10-15 minutes.
I will say to those of you who are ‘handy’ - start at the heat source and work *backwards*.
If there’s nothing obvious (burnt wiring, etc) attach that 240V bulb to the element leads (or gas valve 120V supply), and fire the dryer up.
Light = open element (gas control/ignition system problems).
No light = other problems (thermal fuse, t'stat, etc).
Hope this helps!!
Posted on Dec 05, 2008
Q - My electric dryer runs but will not heat, what could stop my dryer from heating?
A - Things that could stop a electric dryer from heating:
- house fuse or breaker ( needs two of them ), heating element, burnt wire, thermostat(s), thermal fuse ( not all models ), motor heat switch, timer, selector switch, burnt power cord/plug.
A ohm meter test for these parts is here.
Q - My gas dryer will not heat, what could stop my dryer from heating?
A - Things that could stop a gas dryer from heating:
- glow bar igniter, thermal fuse ( not all models ), coils on the gas valve, gas valve, thermostats,motor heat switch, timer, selector switch, sensor.
A page for checking gas dryers is here.
Posted on Dec 05, 2008
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Posted on Jan 02, 2017
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