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My Frigidaire furnace is cycling on and off, One filter,

Customer Question
My Frigidaire furnace is...

My Frigidaire furnace is cycling on and off

Contractor's Assistant: Did you check the furnace's filters?

One filter, yes

Contractor's Assistant: Do you plan on doing the work yourself?

If I can i seated the cables to the circuit board and it came on for a few seconds then turned off

Contractor's Assistant: Anything else we should know to help you best?

I had a yello light on the CB besides a red one I cleaned the flame sensor and it is still cycling on and off

Submitted: 2 months ago.Category: HVAC
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Answered in 9 minutes by:
12/11/2017
HVAC Technician: airheatman, HVAC Technician replied 2 months ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8,898
Experience: Furnace, A/C and heat pump specialist.
Verified

What is model on furnace and what is led doing now?

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Customer reply replied 2 months ago
FG6RA-096C
it is solid red
HVAC Technician: airheatman, HVAC Technician replied 2 months ago

Let me grab a manual.On call for heat tell me exactly what happens and if light changes

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HVAC Technician: airheatman, HVAC Technician replied 2 months ago

As soon as furnace fails to stay on the red light should start flashing indicating what failed by number of flashes between pausing.

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Customer reply replied 2 months ago
okay, heading down to the basement. will be right back
HVAC Technician: airheatman, HVAC Technician replied 2 months ago

Standing by

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Customer reply replied 2 months ago
This time the ignitor came on but the flame did not
light blinked 3 times between pause
HVAC Technician: airheatman, HVAC Technician replied 2 months ago

Was inducer still running with the 3 blinks?

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Customer reply replied 2 months ago
tried again and flame stayed on only for a couple of seconds
Customer reply replied 2 months ago
you mean the little fan?
it ran for a few seconds and cycled off and on imediately
HVAC Technician: airheatman, HVAC Technician replied 2 months ago

Little fan has to stay on the entire heat cycle.

Check ta wires to small fan and see if the 120v is dropping out to little fan.

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Customer reply replied 2 months ago
The board is Nordyne in 624631-0
are these available for pickup in local stores around Naperville IL?
HVAC Technician: airheatman, HVAC Technician replied 2 months ago

Have to step away for a few.be right back.If losing power to small fan try jumping R and W on furnace board and see if we can get it to stay on.https://i.imgur.com/JprQdYv.png

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Customer reply replied 2 months ago
Or do I need to order online and wait
Customer reply replied 2 months ago
my R and W are on far ends
Customer reply replied 2 months ago
Jumping the R and W killed it
now even the little fan or Red light does not come on
Customer reply replied 2 months ago
did it blow a fuse
HVAC Technician: airheatman, HVAC Technician replied 2 months ago

R is 24v power to thermostat.W is 24v power (same leg) coming back from W at thermostat..Touching the two CAN NOT short anything.You may have let R touch C creating a short.Check fuse on board

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Customer reply replied 2 months ago
I connected the R and W and powered on the switch on the side of the furnace
there was a small spark and the onboard Fuse appears to be shot
Customer reply replied 2 months ago
are these fuses available in the big box stores?
HVAC Technician: airheatman, HVAC Technician replied 2 months ago

Yes or auto parts.But again I assure you R and W did not blow fuse. As stated the thermostat is like a light switch. The light switch breaks the R 24v power wire.If this blew fuse for sure your board is bad and you are wasting time and money

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Customer reply replied 2 months ago
are the boards available in stores or online only?
Customer reply replied 2 months ago
my R and W are on far ends, I jumped them with small piece of low voltage flex wire and i saw a small spark
now the red light is not coming on and the little fan is not either
the red fuse with Letter E printed on it is black in the center
Customer reply replied 2 months ago
what is the fuse rating?
HVAC Technician: airheatman, HVAC Technician replied 2 months ago

If you have a Nordine distributor or a Johnstone in town you can get from them .Often they will only sell to contractors though.

The E is actually a 3. Three amp fuse.You can use a 5 if you don;'t have a 3

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Customer reply replied 2 months ago
I will go get a fuse and see if the red light comes on. the parts supply store Johnstone is in this town but is now closed
Customer reply replied 2 months ago
I put in a new fuse and it started and is also running for now.
HVAC Technician: airheatman, HVAC Technician replied 2 months ago

GReat news that it is now running.Let me know if it fails or stays running.

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