Tempstar pilot not lighting after draft inducer replacement

hvaclover · 03-27-2009, 10:24 AM

Quote:

Originally Posted by Kdavid

It's true no heat since Sunday. The house never got below 49 and I travel a lot so hasn't been a big deal. It's supposed to be 63 today and that is good news. It actually feels colder inside and outside.

Gents, I deal with high speed surface mount electronics hence my kindergarten comment. I still appreciate your help. The only reason I didn't call a pro is because I can get all these parts on Ebay for 1/10th of what a pro would charge me.

So please help me out man.

I checked the pressure switch with its wires plugged in and not plugged in.

With the wires plugged in:
The switch closes when the induction motor turns on and is open when the induction motor is off.

With wires pulled out:
The pressure switch is open all the time.

With all due respect I am bowing out of this thread because either one; the guy is tring to prank us. Or two, he does not follow instruction and second guesses the answers given.

kenmac · 03-27-2009, 10:25 AM

Quote:

Originally Posted by Kdavid

With the wires plugged in:
The switch closes when the induction motor turns on and is open when the induction motor is off.

With wires pulled out:
The pressure switch is open all the time.

Then,
Must be an electronic pressure switch

**beenthere** · 03-27-2009, 10:29 AM

Quote:

Originally Posted by Kdavid

Gents, I deal with high speed surface mount electronics hence my kindergarten comment. I still appreciate your help. The only reason I didn't call a pro is because I can get all these parts on Ebay for 1/10th of what a pro would charge me and I could go without heat for a while.

Ebay, thats where I get all my high speed eletronics stuff.

And my electronics books.

Those dang electronic engineers, want to much to design things.

hvaclover · 03-27-2009, 10:30 AM

Quote:

Originally Posted by kenmac

Then,
Must be an electronic pressure switch

Nope. there's a pic of the switch. Regular old diaphragm switch, not a transducer.

You can see it in the pics

Kdavid · 03-27-2009, 10:31 AM

Quote:

Originally Posted by hvaclover

With all due respect I am bowing out of this thread because either one; the guy is tring to prank us. Or two, he does not follow instruction and second guesses the answers given.

With all due respect I agree I need a new igniter, but the valve seems to be fine per the troubleshooting instructions you supplied. All eyes are on the pressure switch as ken mentioned no?

I do agree I have to upgrade to the sv9501 because of the better design, but at the moment I would love for the heat to go on.

Shorting the switch should be a good test correct?

Kdavid · 03-27-2009, 10:32 AM

Quote:

Originally Posted by hvaclover

Nope. there's a pic of the switch. Regular old diaphragm switch, not a transducer.

You can see it in the pics

So you think it's still the valve?

kenmac · 03-27-2009, 10:34 AM

Quote:

Originally Posted by hvaclover

Nope. there's a pic of the switch. Regular old diaphragm switch, not a transducer.

You can see it in the pics

Just joking

Like the westinghouse joke

Kdavid · 03-27-2009, 11:34 AM

Bam!!!!!!!!!!!!!!! well what do you know....I stay home because of a world record hangover and I fix my furnace. It's a beautiful day after all.

I shorted the switch and we have heat!!!!

... and you wouldn't believe I just bought a new switch for $8 on ebay...

http://cgi.ebay.com/ws/eBayISAPI.dll...m=120326620243

Thanks so much guys. Hugs and kisses.

kenmac · 03-27-2009, 11:40 AM

Quote:

Originally Posted by qbert

The pressure switch is functioning ok since it closes when the inducer goes on. When the switch is closed I read 29V across it. When a switch is closed you should not read source voltage

This statment told you the switch was bad

hvaclover · 03-27-2009, 12:08 PM

I still think he is a troll..knew too much about the system to make those screw ups. misreading the voltage at the valve.

E

hvaclover · 03-27-2009, 12:12 PM

Quote:

Originally Posted by Kdavid

Bam!!!!!!!!!!!!!!! well what do you know....I stay home because of a world record hangover and I fix my furnace. It's a beautiful day after all.

I shorted the switch and we have heat!!!!

... and you wouldn't believe I just bought a new switch for $8 on ebay...

http://cgi.ebay.com/ws/eBayISAPI.dll...m=120326620243

Thanks so much guys. Hugs and kisses.

And to think, it only took five days.

My kid is an EE and a damn good one, so I KNOW you were BSing us all the thruway this post or you were drunk.

Nice combo --a drunk engineer and a gas furnace.

You are cutting out because you were found out, not because you fixed it.

Kdavid · 03-27-2009, 12:34 PM

Quote:

Originally Posted by hvaclover

..knew too much about the system

I will take that as a compliment. Check out my new signature!!!

I will admit I may have been inebriated a few times when posting.

A switch in theory is not supposed to read a voltage across it when closed....I know this, but at the same time it was confusing the hell out of me. See...if I had experience like you guys I would've shorted the switch four days ago.

It is true that you learn more on the job than in school.

Cheers....opens a beer.

hvaclover · 03-27-2009, 01:52 PM

Quote:

Originally Posted by Kdavid

I will take that as a compliment. Check out my new signature!!!

I will admit I may have been inebriated a few times when posting.

A switch in theory is not supposed to read a voltage across it when closed....I know this, but at the same time it was confusing the hell out of me. See...if I had experience like you guys I would've shorted the switch four days ago.

It is true that you learn more on the job than in school.

Cheers....opens a beer.

I can recommend a good 12 step program 'ya lush.

A drunk hvac tech burned down my mother's home with her still in it.

I won't tolerate idiots working with gas while under the influence.

Check into a Canadian 12 step program before you kill somebody.

hvaclover · 03-27-2009, 01:54 PM

My user name is Copyrighted. Use at your own risk

**beenthere** · 03-27-2009, 02:21 PM

The pressure switch is a safety device.

Buy passing it, doesn't mean its the problem.

It may have been doing its job.

If you install a new switch and it doesn't work. Your right back at step step 2.