Unit runs but does not heat. Gas valve is open. There was allot of lint in duct but I completely cleaned this out. Does this unit have an automatic gas shut off when clogged and if so is there a way to reset after cleaning the lint from unit and duct?
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Good Morning David, thank you for allowing me to assist you!
I understand your dryer is experiencing lack of heat. There are several factors that could cause this; some of which you can check prior to scheduling a professional.
Have you checked your lint filter recently? I ask because if a lint filter is full of lint it will restrict airflow and lengthen dry times. To keep your dryer working correctly, clean out the lint folder area after each and every use. Check the lint filter for any buildup of fabric softener that will also restrict airflow and wash with soapy water to clean. If the filter is damaged then it will need to be replaced.
Additionally to checking the lint trap area, please investigate the ventilation (duct work) system connecting to your dryer. Often we forget to clean this duct work therefore over time debris can restrict air flow. Check the air flow by disconnecting the accordion-like duct work from the dryer appliance. Run a drying cycle, with clothes inside the unit, but keeping the duct work disconnected. If you notice any improvement, then the ventilation duct work (often going through your floor or side wall) will need to be thoroughly cleaned. Also make sure you do not have multiple turns or kinks in the duct work. The more curves or turns this duct system has to take to exit the air outside, the more restricted it can get. The more restriction you experience the more time it will take the unit to dry.
Do you notice any unusual rumbling or rubbing noise when in use? This could indicate a faulty blower wheel. A blower wheel that is not firmly attached to the motor can slip and therefore not move air fast enough to properly dry clothes or even reduce airflow to the point where the high limit thermostat (a fuse like component) may trip and turn off the heat circuit. A loose blower wheel will usually make a rumbling noise that is easily noticed. Inspecting the blower wheel is usually a task for a professional considering you must take apart most of your appliance to make sure it is tight to the motor shaft.
If you have a gas dryer, gas valves could also cause you an issue. Defective gas valves can create a symptom of taking too long to dry if they are intermittent and require professional attention. A professional is needed to check for proper flame ignition for a complete drying cycle to determine if this may be your point of concern.
On many dryers you will find "drum seals" in between the unit's drum and the front door. The drum seals are used to prevent excess air from entering the dryer drum and act as a cushion between the drum and the front and rear access. The drum seals are made up of a felt like material. If the seal is torn, or is worn, then clothing can become stuck in the gap when the drum is turning. This can produce a scraping or thumping noise and the clothes can also be ripped and/or have black marks on them. This will also affect your drying time tremendously.
While you are checking the drum seals please check the door of your dryer as well. When the door is closed in gas and electric dryers the door seal helps to keep cooler air from entering the drum. Keeping the correct temperature at all times inside the dryer ensures that the clothes will dry efficiently. If clothes are not drying then inspect the door seal for signs that it may be worn or damaged.
If none of the above solutions prove to be successful, it would be advisable to contact an experiencing repair tech to assist further.
Motor runs, but main burner will not ignite
1.heat switch set wrong---correct switch setting
2.defective timer or timer circuit---check timer wiring--replace timer motor or switch as needed
3.defective centrifugal switch in motor---clean switch or replace as needed
4.gas supply valve closed----open gas valve
5.inoperative solenoid coil---test coil for open circuit & the voltage to it
Pilot burner goes out
1.insufficient gas supply---- low gas pressure or clogged pilot filter or partially closed gas valve
2.carbon deposit on thermocouple tube---clean tube & check pilot burner for proper combustion
3.improperly adjusted pilot flame--adjust pilot flame until faint yellow tip begins to appear
4.faulty ignition or reset valve or thermocouple---replace
Clothes not drying, but dryer runs & heats
1.defective operating thermostat---test thermostat, replace if defective
2.fan or it's pulley loose on shaft---tighten set screw
3.incorrect heat or timer settings---reset timer
4.clothes to wet when placed in dryer----wring out or extract water from clothes before placing in dryer
5.clogged lint screen or duct (little air motion)---clean out lint screen & duct
first make sure the vent is clean to the outside from the dryer,then it could be packed with lint inside the unit,after this is complete,then the hi-limit/cycling switch on the element case can cause early cycling and low heat output if the unit heats by electricity,ig gas it can be a cycling switch on the burner tube,radiant sensor on the burner tube,gas valve coils are weak on the gas valve
First, check the duct work! The most common "no heat" problems with dryers are caused by duct work blockage. If your duct is blocked, it will overheat the unit, causing it to shut down the heat source (gas or electric, it doesn't matter). Most units will continue to "blow" without the heat. Remove the duct work, remove all lint from the duct and "exit" port of the unit. Then, check the wall duct, both inside and outside the house.
if the igniter glows do u see the flame, and then shuts off,
you can have a copule things going there
one you might a block exhaust vent,full of lint, even when it seems like the duct is clear all the way to the outside, you might have some lint inside the unit, try cleaning it by removing the back panel screews, the air duct, and then remove i thinks is 4 or 5 screws from the air shoot, open it an clean the inside, what sometimes happens is that the blockage is there on the duct, the heat is created but won't exit the unit, and it back flows, rising the temp, and the dryer won't turn back on till it cools off
if you clean the ducts an you still have the problem, then i would look at 2 thigs first the coils replace em
This could be one of several problems. The most common problem that causes no heat is a clogged duct or vent. If air is not flowing out of your unit due to a clogged vent or duct, it will immediately overheat and shut down the gas burner, in gas models or the calrod heating system in the electric models. Try removing duct, checking for clogs in the duct and at the connector at the unit itself. Then check the vent inside your home and on the outside wall for lint clogs.
Hi, It sounds like the coils on top the gas valve are bad. If the ignitor glows but shuts off before a flame, the coils need changed. I hope this helps. If I can assist you further, please let me know.