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Well I just noticed voltage to gas valve is at 15V *prior* to ignitor lighting up. When it does light up voltage jumps to 28v. Sounds like I need a new gas valve

Hi Mark,

Actually it's seeing 15V. What's my next step if tapping on gas valve doesn't work? Possible flame sensor? How do I test it?

Thanks

Hello,

My carrier furnace is on the fritz. I am receiving a 34 code which states"ignition proving failure"
The blower fan starts and the hot surface ignitor lights but no gas flows. I replaced...

Hello,

Every few day my Carrier furnace faults and stops operating. The flashing LED code is 12---- 'Blower on after power up". If I shut off furnace and then restart, it works normally again...