Caloric Pilot-Ign Oven not lighting main burner


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Old 11-28-08, 12:01 PM
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Caloric Pilot-Ign Oven not lighting main burner

Hi all,
We have an early-80s (best guess) Caloric Heritage series range on which the oven doesn't light. After some searching here I have done a little investigating, and found the following:

The pilot will not light with the thermostat in the off position.

Opening the thermostat will allow the pilot to light and the flame does envelop the safety valve element.

Closing the thermostat to low will draw the flame down to a small pilot flame that does not envelop the element, but if closed back to the off position the pilot goes out.

The oven uses a Harper Wyman safety valve that looks like this:



Were it not for the fact that the pilot dies when the thermostat is closed I would assume that this is just a failed safety valve (or element?) but the pilot issue has me thinking there may be a problem with the thermostat.

Any idea what my next steps should be?

BTW, we have had this range for a couple of years but the oven has never worked. It is a rental unit but the landlord has expressly stated "appliances are the responsibility of the tenant" so it's really on me to get it going again, and I'd really rather not have to replace the range, as otherwise it works great.

Thanks in advance for any help!
 
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Old 11-29-08, 05:58 AM
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Hello Nosser and Welcome to the Do It Yourself Web Site and to the Gas Appliances topic.

That pilot that heats the safety element pictured lights off a standing pilot (constantly on) or a small glow coil. If the glow coil does not glow, it will not ignite the pilot flame.

If there is (or should be) a constant burning pilot flame just above the larger actuating flame that heats that element is not burning or will not light, the orifice is clogged. Smaller constant on flame will be located on the pilot assemble as will be the very tiny glow coil, which ever system is used.

Also reading the sticky note pertaining to the condition. HERE

Retail parts dealers and appliances parts stores can also help determine what the possible problem may be based upon that specific brand and model. Bring the make, model and serial numbers. Dealers and appliances parts stores are listed in the phone book.

Additional Suggestions:
Read the manufacturers on line web site for product information, problem possibilities, causes, solving methods, part locations, disassembly, reassembly methods, repair procedures, pictorials, schematics, repair and or owners manuals which may be available on line.

Cautionary Reminder Note:
Before attempting any repairs, be sure to unplug the appliance from the wall receptacle power source first.

Use the reply button to add additional information or questions. Using the reply button keeps or moves the topic back up to the top of the list automatically and keeps all communications on this subject in this thread.

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Old 11-29-08, 12:28 PM
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Thanks, Sharp!

After doing a little more research, it looks as though my oven does indeed have an electronic ignition, not a constant pilot - I thought that one of the components I was looking at was an ignitor and this confirms it:

RepairClinic.com - Appliance parts for 80 brands, shipped same day.

So that being said - the ignitor is definitely not working. However, once the pilot is match lit the main burner still won't come on, even if the pilot is left on and envelops the sensor bulb for 5 minutes +. Could a failed ignitor somehow failsafe and prevent the main burner from receiving gas?
 
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Old 11-30-08, 04:40 AM
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Hello: Nosser

Part displayed is a spark igniter. It may not spark as a result of being defective or the module powering it may be defective or the module may not be getting power.

Likely to be a defective spark module. Unless there is some damage to the spark igniter or it is simply dirty. Can be cleaned with light grade steal wool or very fine sand paper. Once cleaned, retry using it. May or may not work.

If cleaning fails, most likely module defective or there may be an appliance fuse in line or right next to the module. Check for a possible existing appliance system fuse. If one is there, it is a specially part, not an ordinary fuse.

Replace fuse and or module with an OEM part. Same applies to the other parts. Generic parts, imo, not as good as an OEM. (Original Equipment Manufacturer)

Next item. Burner may not work as a result of dirty pilot flame. Cleaning pilot flame can be done with a pressurized can of computer keyboard cleaned, as described in the sticky note Range-Stove-Oven-Broiler Basic Help Information, Fault Codes & Mfg's Web Site Links Range/Stove/Oven/Broiler Info, Leak Detection, Fault Codes, Fuel Conversion & Links - DoItYourself.com Community Forums

Retail appliance parts dealers can also help determine what the possible problem may be also. They will need the make, model an serial numbers. Appliance parts dealers are an excellent source for original replacement parts. Dealers are listed in the phone book under appliances.

"Be sure the electrical power and the gas supply to the appliance is turned off, before attempting any repairs. Always check for gas leaks whenever the appliance is moved and/or a repair includes any connection of a gas part."

Kindly use the reply button to post all replies, add additional information or ask additional questions when replies are posted. Using this method moves and/or keeps the topic back up to the top of the list of questions automatically and keeps all content on the same subject within one thread.

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