Where is the limit switch on my Amana air command 80 furnace

bad control board

it should be above the burner on the outside of the heat exchanger square is shape

[PDF]80-90 FURNACE SERVICE MANUAL.pdf - Johnstone Supply

johnstonesupply9.com/.../Amana/Gas%20Furnaces/GCCA%20Gas%20Fu...

Instructions. This manual is to be used by qualified HVAC technicians only. Amana .... Gas Furnace Upflow/Horizontal Induced Draft A Air Command 80 SSE.

In the path of the flame on the last burner that starts, there will be a small rod. That rod is the flame sensor. Take a scrub pad and polish it. Also check the electrical connection that goes back to the circuit board. Disconnect any ground wire from the circuit board to furnace cabinet, sand it and replace it.

Hi check out the pressure switch jump it out and see if it lights also check the igntion coil is glowing

HOW OLD IS THE UNIT

Buy a new ignitor here; The Ignitor Store. Or talk an Amana dealer/Contractor to sell you one. They can range from 15 to 35 bucks! Depending on their mark-up. Give them your model number, and or ignitor part number. Their simple to change out, good luck, please contact if you have any questions.

Hello Bob,
Welcome to fixya,

You said, Amana Air Command 80, 20 years old.
Electronic ignition.
Furnace does not start.
Good power to furnace.
Thermostat properly set.
Where do I start looking?

Sounds like you possibly have one or more bad jets if the unit is a gas furnace!
Let me know how it goes.
Huuum

WOW, listen to this story!
I understand you are looking for the solution to fix your furnace your self.
But I want to tell you my story about my smart wife and our furnace.
When we moved into this house the furnace was 20 years old and she suggested that we put a new one that it will save us money.
I laughed at her and replied if it's not broken why fix it!
Six years later it finally broke down and I replaced the whole furnace and central air unit with a new one.
Our utility bill went down $100 dollars a month!
That's $7200. that I lost over 6 years due to not respecting my wife's power of reasoning!
If you can afford it or can get financing replace any unit 20 years old and it will pay for it self.
Can you imaging $1200. a year for 20 years is $24,000 dollars I'm saving with a new and efficient unit.
Do the math!!!!!!!!!

Thank You,
Huuum, Hope I gave you some good fatherly advice.
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