Should be able to read a measurable resistance on ohms

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Is there an universal number? I got a reading of 48 ohms across the igniter leads.


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was this for a Honeywell smartvalve type setup, with the HSI and flame rod in one module ?
luck, dan

 

Yes


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Yes it's on heil dc90 furnace.


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48 don't sound to bad. I'm thinking round 80 . But it's been awhile. No glow?

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I replaced the igniter because there is no glowing of the HSI. I fired it and it lit off as normal, once. After that it started the same thing.


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Does the valve energize?

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When you say energize are you referring to the click just prior to the the HSI glowing? It does not make that click. But if I take a voltage reading I do get 24 volts


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That ignitor I believe should be under 10 ohms

 

With all the different ignitors out there, ohm readings will vary from manufacturer to manufacturer... Some are good with ohms between 15-100, some are still good with ohms into the 400's...(Norton low-temps...)

 

Seems the hot surface ignitors I run across are 115 vac. I just plug them into a wall socket to see if they work. I always check the voltage to the ignitor first just to be sure.

 

Try to find the manfr specs. I seen ranges from 20 and between 300 ohms

 

Come to find out it was a bad gas valve. Once in a while it would operate normally and other times nothing. After replacing the valve last month no more calls. Hopefully it stays that way. Thanks for the replies.


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