Tappan oven won't light


  #1  
Old 11-12-01, 09:38 AM
bayouray
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Question

My Tappan Model 32-1009-00-08 range is not working properly. It is a gas model converted to propane. The cook top works fine and all pilots including the oven work fine. When the oven dial is put on broil the burner lights with no problem. Any other temperature setting however results in no gas flow to the burner. The pilot remains the same height unless set on broil.

What could cause this?

Thanks
 
  #2  
Old 11-12-01, 11:00 AM
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Several Possibilities

Hello bayouray and Welcome to the Do It Yourself Web Site and the Gas Appliances forum.

Based only on the info you provided, there could be several possibilities. You mentioned a gas conversion.

Did the oven problem just start as a result of the conversion? OR did it develope recently after working correctly for some time long after the conversion?

I have to assume there is only one oven burner and it also functions as the broiler burner. A standard conventional oven were the oven is in the upper section with a broiler compartment below.

OR is the oven a single compartment oven with two burners, one upper burner and one lower burner both in the same compartment????

There are three different types of pilot assemblies used to operated oven gas valves. The most common is the fluid safety.

The fluid safety type of pilot assembly has two pilots. One tiny one that is on all the time and the second one that is much larger, points it's big flame downs at a slight angle towards the front of the burner, heats an element bulb and only turns on when the oven is turned on.

The larger flame then heats that element bulb. The buld element is the fluid safety element. If it is weak, the element can be replaced individual and seperate from the gas valve it screws into.

Spark ignition pilot type is lite by a sparking ignitor. and the flame does appear but the oven doesn't turn on, the element that the pilot flame heats is most likely defective and needs to be replaced. If the sparker fails to spark, either it is defective or the spark modual is defective.

The other type [a flame switch} has only one pilot flame with the safety element above the horizontal length of the pilot flame. The safety element on this type can be replaced seperately and individually of the gas valve also.

The flame switch type can be easily identified because it does not screw directly into the gas valve. Instead, it is attached to a metal round part that is held in place by two tiny screws. This part is most often attached to the back wall of the oven.

A flame switch uses contacts to make an electrical connection. The switch uses 120 volt house current. The vapor pressure inside the flame switches element keeps the contact points inside the switch closed.

CAUTION:
When working on appliances in general and especially ovens which use a flame switch, be positive the electrical power is turned off. Failure to do so will expose you to the possibility of electrical shock!

HINT:
Any of these parts may not always be easy to replace for the unhandy or inexperienced do-it-yourself person. The parts aren't all that expensive and the labor costs are often worth paying a professional to do the job.

Should parts be needed, patronize our online sponsor, who's ad appears on this web page, for additional assistance and online parts sales.

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

For those who may not care to do this task, some natural gas utility companies offer this service.

Supplying detailed information regarding the situation or problem your dealing with, a complete discription of the type of problem or problems with the type of appliance, etc. helps to explain the situation your dealing with in a manner that allows myself and or others to offer the best advice.

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

Check the ARCHIVES, within this forum, for other postings on this topic and the replies offered.

Thanks,
Forum Moderator
Tom_Bartco
 
  #3  
Old 11-13-01, 04:47 AM
bayouray
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Tom, thanks for getting back so quickly. To answer your questions, the oven has operated very well for a few years after the conversion. Yes, it is conventional oven with only one burner (broiler draw type), and it has no electical connection so will not be the flame switch type.

Ray
 
  #4  
Old 11-13-01, 05:18 AM
wonderskink
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replace the thermostat and that will fix the problem. If it works on broil, the valve and pilot assembly cannot be defective. The problem is that you have lost fluid in the thermostat bulb, so the end result is that the thermostat is underheating so much, that you have to turn the control all the way to broil (which on that model is the same as 550 degrees bake temp) to get the burner to come on.
 
 

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