need Armstrong igniter advice

[zacmobile]

Looking at an Armstrong 80 GUJ100D12-2B furnace that's not igniting but I am unfamiliar with the hot surface ignition system. Just trying to determine if it's the gas valve or igniter, What kind of voltage should I be seeing on the igniter leads? I'm getting 6 volts.

[syndicated]

Is there a smart valve on that furnace?

[rundawg]

Looking at an Armstrong 80 GUJ100D12-2B furnace that's not igniting but I am unfamiliar with the hot surface ignition system. Just trying to determine if it's the gas valve or igniter, What kind of voltage should I be seeing on the igniter leads? I'm getting 6 volts.

With the pilot burner cable connected, and voltage measurements taken while the ignitor is powered, you should have 24 volts.

Ignitor should ohm out at less than 10 ohms.

[Joehvac25]

Hey rundawg, do you have any sort of file on ohm reading for different ignitors? I just would like something to save or else I forget.

[rundawg]

Hey rundawg, do you have any sort of file on ohm reading for different ignitors? I just would like something to save or else I forget.

I don't have a break down for each and every ignitor on the market, but I sent you an email with what I have.

[dandyme]

The resistance of a Norton silicon igniter used in the Q3450 or Q 3480 pilot assemblies, when new and
cold, will be between 3 and 4 Ohms (average 3.7 Ohms) as the igniter ages the resistance will increase. When
its resistance reaches 10 Ohms the igniter should be replaced


anyone have a better cut & paste about the ignitors

[Joehvac25]

I don't have a break down for each and every ignitor on the market, but I sent you an email with what I have.

Thanks for that, any info I don't have to try to remember is good info lol.

[zacmobile]

That helps, thanks guys.