Model #3003622 WILLIAMS Furnace- Wall

  • Wall Furnace
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Question and Answers

Q:

Gas valve p#p121200 changed to p295200a. Totally different valve. what changes need to be made to install this valve? 3003622 Williams Wall furnace

A:

I know that it can be very difficult to have issues with your furnace. This part is a substitution by the manufacturer. The manifold and the orifice has also been change. In order for the valve to work, you will need to replace all three. However, the manifold is not longer available. This means that the manufacturer has stopped producing it. I was not able to locate it for you at this time. I hope this helps. Please feel free to let me know if you need further assistance. We are always here to help. Thank you for using Manage My Life.com.

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AnneJ -
Sears Technician
October 27, 2013
Q:

williams 3003622 3003622 Williams Wall furnace

A:

Thanks for using SearsPartsDirect.com. I am sorry to hear about the issue you are having with getting the furnace burner to light, I know how frustrating that is, especially with Winter right around the corner.

It sounds like based upon your symptoms the issue may be coming from the pilot itself. The pilot flame may need to be adjusted if it seems too low, or more specifically, it may not be generating enough millivoltage to open the valve. 

The pilot flame must impinge or make contact on the thermocouple or generator. Also make sure the thermocouple or generator is fully inserted into the bracket.

You could also need to clean the thermocouple or generator connections at the valve, if they are dirty, the pilot won't stay lit.

If that checks out, you can try checking the thermocouple with a millivolt meter, it should generate approx. 30 millivolts when not connected to load. When connected to load, it should generate approx. 14 millivolts. If it's below 7 millivolts, it should be replaced. The generator should be 140 millivolts or more when reading at generator terminals of valve with pilot burning and thermostat contacts closed. 

If you would feel more confident have a Sears Home Service technician help assist with the diagnosis/repair, click here to be directed to the page to set up service. 

Hopefully these suggestions will help, I would start by cleaning the pilot and thermocouple and adjust flame if needed and go from there. Thanks for using SearsPartsDirect.com.  

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Jeff Wallace Sr -
Sears Technician
October 10, 2013
Q:

williams 3003622 3003622 Williams Wall furnace

A:

Thanks for using SearsPartsDirect.com. I am sorry to hear about the issue you are having with getting the furnace burner to light, I know how frustrating that is, especially with Winter right around the corner.

It sounds like based upon your symptoms the issue may be coming from the pilot itself. The pilot flame may need to be adjusted if it seems too low, or more specifically, it may not be generating enough millivoltage to open the valve. 

The pilot flame must impinge or make contact on the thermocouple or generator. Also make sure the thermocouple or generator is fully inserted into the bracket.

You could also need to clean the thermocouple or generator connections at the valve, if they are dirty, the pilot won't stay lit.

If that checks out, you can try checking the thermocouple with a millivolt meter, it should generate approx. 30 millivolts when not connected to load. When connected to load, it should generate approx. 14 millivolts. If it's below 7 millivolts, it should be replaced. The generator should be 140 millivolts or more when reading at generator terminals of valve with pilot burning and thermostat contacts closed. 

If you would feel more confident have a Sears Home Service technician help assist with the diagnosis/repair, click here to be directed to the page to set up service. 

Hopefully these suggestions will help, I would start by cleaning the pilot and thermocouple and adjust flame if needed and go from there. Thanks for using SearsPartsDirect.com.  

Read More
Jeff Wallace Sr -
Sears Technician
October 10, 2013