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The spark ignitor is fairly new when inducer motor comes on…

Customer Question
The spark ignitor is...

The spark ignitor is fairly new when inducer motor comes on i can hear clicks in the board click but ignitot dosnt come is that a failed board?

Contractor's Assistant: I'll do all I can to help. How long have you been dealing with this?

Yesterday for me but another tech put in a spark about 6 months ago .. i tried to jump out the pressure switch did not see one so tried where the wires went into the board

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

Yes im a hvac serv tech but have never worked on a coleman

Contractor's Assistant: Are you an HVAC professional?

Yes graduated in 2000

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

Well i think it is the board but like i said tring to diagnose inducer

Submitted: 5 months ago.Category: HVAC
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Answered in 3 minutes by:
3/20/2018
HVAC Technician: airheatman, HVAC Technician replied 5 months ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 9,367
Experience: Furnace, A/C and heat pump specialist.
Verified

1.What is model on furnace
2.Do you get an error code on board when it fails?

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Customer reply replied 5 months ago
dgat075bdd .. just green light blinking..did not see error code listings any where
Customer reply replied 5 months ago
im sorry what do i do right now
HVAC Technician: airheatman, HVAC Technician replied 5 months ago

My manual is showing the igniter to be a hot surface igniter not a spark. Can you verify which you actually have?My name is ***** ***** I am happy to be able to work with you on this today.Please be patient as I respond as sometimes it takes me a few moments to gather proper manuals and specifications on your equipment in order to provide accurate answers.Please wait until we are finished to rate my answer.Just to let you know, the website will be offering a live phone call for an additional fee. Due to my current work load and responsibilities I may not be available for the live phone call .Please note that there is an additional cost for the service and if a technician calls it may be a different technician. However we can continue here as long as needed .

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Customer reply replied 5 months ago
i could be did not take it three wires going in one green two white
Customer reply replied 5 months ago
did not see a pressure switch just two wires going into board from inducer
Customer reply replied 5 months ago
my talent is with carrier 90 percent
Customer reply replied 5 months ago
but if not igniting on carrier i can check power going to inducer from board to see if it is the board
HVAC Technician: airheatman, HVAC Technician replied 5 months ago

Your ignitoer is going to be inside the firebox on this furnace.Look through peep hole and seei if you have a glow bar or spark.See pictures in links above

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Customer reply replied 5 months ago
i did not see anything glowing or lighting up
Customer reply replied 5 months ago
the inducer would run then a couple of clicks board then nothing ..no glow
Customer reply replied 5 months ago
i think it is the board but could it be inducer motor?
Customer reply replied 5 months ago
i do but not at property right now
Customer reply replied 5 months ago
no home computer
Customer reply replied 5 months ago
im sorry that is supposed to be "on"
Customer reply replied 5 months ago
can i get ahold of you guys when i get there
Customer reply replied 5 months ago
at home right now
HVAC Technician: airheatman, HVAC Technician replied 5 months ago

Yes just come back to site when at the unit.

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Customer reply replied 5 months ago
are you doing ohms on hsi
HVAC Technician: airheatman, HVAC Technician replied 5 months ago

You can do ohms or you can unplug and check the 120v at plug from board to igniter

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Customer reply replied 5 months ago
I'm checking off the board where the plugs in to hsi it is bouncing around 14.5 to 19
HVAC Technician: airheatman, HVAC Technician replied 5 months ago

Got meter on ac volts?

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Customer reply replied 5 months ago
vac
HVAC Technician: airheatman, HVAC Technician replied 5 months ago

OK and this is after the exhaust motor comes on and the centrifugal switch should close yes?

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Customer reply replied 5 months ago
Got them plugged in to both plugs that go into hsi
Customer reply replied 5 months ago
Inducer comes on then board clicks
Customer reply replied 5 months ago
Looked at hsi didn't see any flaws
Customer reply replied 5 months ago
How does this inducer motor signal work with no pressure switch?
Customer reply replied 5 months ago
What is the best way too that I only know carrier pressure switch
HVAC Technician: airheatman, HVAC Technician replied 5 months ago

Follow those blue wires to locate it.It is basically the same thing as the pressure switch you are familiar with.Vent motor pulls a vacuum closing contacts.

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Customer reply replied 5 months ago
Yeah I did that yesterday they go in to to plastic cover 250 fuses
HVAC Technician: airheatman, HVAC Technician replied 5 months ago

Make sure we are getting continuity through that switch on the 2 blues

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Customer reply replied 5 months ago
Ok.. no continuity
Customer reply replied 5 months ago
Replace inducer?
Customer reply replied 5 months ago
Right
HVAC Technician: airheatman, HVAC Technician replied 5 months ago

Next lets try with thermostat calling for heat and vent motor running?

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Customer reply replied 5 months ago
That's what I'm doing
Customer reply replied 5 months ago
Sorry you while checking con..yes it worked
Customer reply replied 5 months ago
We have con while running
HVAC Technician: airheatman, HVAC Technician replied 5 months ago

Does igniter ever get 120 and glow ?

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HVAC Technician: airheatman, HVAC Technician replied 5 months ago

Tell me about the blinking light. How many blinks between pausing

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Customer reply replied 5 months ago
Three
Customer reply replied 5 months ago
I can't find codes anywhere
Customer reply replied 5 months ago
Never glows
Customer reply replied 5 months ago
never read 120 from board
Customer reply replied 5 months ago
Do you have codes... what does three mean
Customer reply replied 5 months ago
Are you still with me
HVAC Technician: airheatman, HVAC Technician replied 5 months ago

LOoking. Manual says red light not green.

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HVAC Technician: airheatman, HVAC Technician replied 5 months ago

Found it. Te 3 flashes means the pressure switch failed to close.

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HVAC Technician: airheatman, HVAC Technician replied 5 months ago

Says this could be caused by: faulty inducer / blocked vent pipe / broken pressure switch / faulty pressure switch".

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Customer reply replied 5 months ago
Thanks..we did get continuity across the blue wires when inducer.. would you recommend replacing inducer?
HVAC Technician: airheatman, HVAC Technician replied 5 months ago

I would probably replace the combustion motor and that switch.

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