Smart valve - http://www.hvacmechanic.com/ Forums
Original message
| davidm
 |  "Smart valve"
, posted Fri 17 Oct 20:32  
Hi, Let me start by saying I am an ASE certified master technician, you know, cars and trucks. I am working on my furnace, you turn it on and it doesnt ignite. The small fan comes on but no red glowing ignitor. I bled any air out. I have 28 VAC at the red wire at the smart valve. I have 28VAC between both blue wires and the black wire at the ignitor. Resistance between the two blue wires is 3.40 ohms. My gut tells me its the ignitor but I dont have any gas flow out of the smart valve to the ignitor. Please help..
Dave C
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Replies:
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| techshawn
| "Re(1):Smart valve" , posted Fri 17 Oct 20:48:
forget the matter of gas. Now you should focus on ignition. You've got resistance on the ignitor. That's good. But that doesn't guarantee the ignitor is good or not. Other than ignitor, you need check the wire connection. Remove the ignitor and inspect its integrity precisely.
I like fixing everything.
[this message was edited by techshawn on Fri 17 Oct 20:53] |
| | davidm
| "Re(2):Smart valve" , posted Fri 17 Oct 20:57
Got it, I will check it out. So if I understand the system, the ignitor has to start glowing to allow gas to get to the pilot?
Dave C
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| | techshawn
| "Re(3):Smart valve" , posted Fri 17 Oct 21:03
the sequence is: thermostat calls for heat, ventor runs, ignitor glows, gas valve opens and fires, blower runs.
I like fixing everything.
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| | davidm
| "Re(4):Smart valve" , posted Fri 17 Oct 21:29
Thanks techshawn, I will check it out in the am.
Dave C
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