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    crazydriver611 Posts: 1, Reputation: 1
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    Nov 16, 2010, 03:05 AM
    Testing voltage on gas furnace?
    I have a Bryant Plus 80 furnace. Sometimes the HSI glows red before the gas turns on and sometimes it does not. One time I actually saw the HSI glow red then stop glowing red and start glowing red again within a matter of seconds 2-3 seconds at most. Does this mean I have a voltage problem in the control board?

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