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  • Upcoming Events

    • 30 March 2024 02:00 PM Until 03:00 PM
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      All Appliantology tech members are invited to join in this workshop on all things Appliantological: bidness, customers, tools, troubleshooting, flavorite brewski, whatever. Webcams and microphones are open and live!
      This workshop is also a great time for any students at Master Samurai Tech to bring any and all questions about the coursework. We're happy to walk through any concepts you're having trouble with. Think of it like office hours with your teachers. 
      If you have a specific appliance problem you'd like us to talk about, post it here! We need a problem statement and a PDF of the tech sheet or schematic so we can all see it on screen share. If you have a PDF that isn't already in the File library here at Appliantology, send it to us by attaching it to the contact form. 
      Also, follow this Calendar Event so you'll get notified of new posts here. Look for the "Follow" button either at the top of the topic on desktop or below the topic on mobile.
      Who: This workshop is only available to tech members at Appliantology.
      When: Saturday, March 30 @10:00 AM Eastern Time.
      Where: Online via Zoom
      How:
      Click here to go to the forum topic with the registration link. If you're interested, register now. Arrive a couple minutes early to make sure your connection is working. Set a reminder for yourself for this workshop so you don’t miss it.  And check out past workshops here: https://appliantology.org/announcement/33-webinar-recordings-index-page/

Nordyne RK80+ Downflow


kipperps28

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The furnace will turn on the blower, then igniter will glow red, but none of the burners will fire. Red light is blinking 4 (ignition failure). All grounds look good. Red light is also on solid when furnace is commanded on. Unit is under warranty (6 months old) but it is Sunday, and can't get ahold of warranty Co. Any help would be appreciated.

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You probably have a weak hot surface glowbar ignitor, just because it glows red does not mean it is working correctly.  The ignitor shouuld glow bright orange/almost white, if not, it probably isn't getting hot enough or drawing enough amperage to make the gas valve open.

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Yes, gas is on (hot water heater is next to furnace, and line T's off of same supply (water heater is working). The info on the igniter is interesting. Is there an ohm spec on the igniter, or do you just swap in a "known" good one? Thanks for the help, guys! BTW, the igniter does actually glow orange, though not at all white. I will have a call into my warranty Co tomorrow, if I don't figure it out myself. I will post the cause when I know.

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Is the control board sending voltage to the gas valve after the ignitor glows? The gas valve is not dependant upon amp draw from the ignitor but is a timed sequence. Are you certain the burner does not light at all?

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Yes, I am sure. There are 4 burners, and my understanding is they fire in a linear fashion, with the left side (flame sensor) burner being the last in line. None of the four fire. I have not tested for power at the gas valve. There is one yellow wire and one brown wire (these originate at the circuit board). I would assume only one of these would provide power for the valve...

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Check the valve's coil for resistance by removing the brown and yellow wires. If it is open electrically we know the gas valve is bad. You can measure the voltage to the gas valve by leaving the brown and yellow wires removed and checking the voltage between them after the ignitor has been glowing at least 30 seconds. Expect it to be around 24 vac.

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