Kitchen Gas Appliances - Dryer Does Not Heat

This is a 2 yr old Frigidaire mod# FDGB34RGS1 120V dryer. It costed about $300.

When one first turns this dryer on it appears everything is working correctly. The drum spins, the glow coil gets red hot, the gas ignites. But, about 45-60 sec. after the gas ignites the gas flow cuts off and the dryer just pushs cold air.

I have checked the exhaust and intake vents for clogs. I have checked the following for continuity, radiant sensor, high limit thermostat, operating thermostat, and the 2 coils. All those items appear to be letting electricity flow, but I'm not sure if checking continuity will tell me if they function correctly. I do not know how to check to see if the gas valve or the burner is functioning correctly.

Since the dryer will initially ignite gas and start the heating process I am assuming that one of the thermostats is not functioning properly? And that is why it cuts off after it starts venting hot air? I am NOT a handyman so I'm just speculating, it might be coincidence that it gets hot then quits.

Any help would be appreciated.

Thanks

Hello PHJ. Welcome to my Gas Appliances forum and our Do-It-Yourself Web Site.

In problem descriptions describing conditions as you mentioned, it's always possible the venting system is still restricted enven though you checked it.

Which is why I suggest you run the dryer without the venting system attached to the machine. Doing so proves one of two possibilities.

If the same condition exists, only then should parts be suspected as the culprits. Doing the test may reveal that parts, testing and time are not necessary.

If the condition is not happening, the problem has been determined and no parts are required. Locating the blockage will resolve the problem. It could as simple as a stuck or restricted flapper baffle in the vent hood.

If the problem remains the same, the second most likely problem is defective solenoids. These parts are secured directly on top of the gas valve. Removal and replacement would be required.

There are several other possibilities. All of which are covered in detail in prior postings on the same topic of dryers that do not heat, etc. Reading those topics will disclose the potential problems and the solutions.

Suggestions:
Read the manufacturers online web site for product information, problem possibilities, causes and solving methods, part locations, disassembly, reassembly methods, repair proceedures and instructions, pictorials and schematics, which may be available online.

An excellent source for orginal replacement parts is your local retail appliance parts store. Appliance parts dealers test and carry replacement parts for all appliances. Parts dealers are listed in the phone book.

Retail parts dealers can also help determine what the possible problem may be. Bring the make, model and serial numbers if you stop in at the store. The info will help to determine the exact parts used in the model assembly line run and possible problem causes.

Tips:
The do-it-yourself person can do electrical tests and continuity tests on several electrical parts. However, I do not recommend relying solely on either test to determine if any electrical or electronic part or parts are causing the problem. The idea is not to replace costly parts until the defective one is positively found.

The only positive proof any part is functioning correctly, is to carefully remove the part or parts you suspect to be the potential problems and have the local appliance parts store person test it or check it. Appliance parts dealers carry replacement parts for all appliances and are listed in the phone book under appliances.

If you need further assistance, which I doubt will be needed after reading other topics on dryers that do not heat up, use the REPLY button. By doing so, the additional information you add or questions you may have, will remain within this posting. Using this method also moves the topic back up to the top of the list automatically.

TCB4U2B2B Company Enterprises
Energy Conservation Consultant & Natural Gas Appliance Diagnostics Technician.

Problem solved! It was the coils. I had bought a set of coils and an operating thermo, but it was only the coils.

Thanks for this informative site.