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Cased closed!! What a great site. If I didn't stumble upon thi site, I would have paid several more HVAC companies to tell me that my problem doesn't exist.

Thanks to all that participated,...

Right on. I got it from Grainger. As it turns out the company I work for , Ricoh Americas Corporation has an account with them. Otherwise, I would have been SOL because I'm not a licensed HVAC......

I'll let you know exactly, but with shipping it was about $47 or so, maybe a little less. I'll get my statement and let you know.

Ta da da da ta da!! Josh you are the man. The 2 year odyssey has been solved.

The temperature today was 91, so obviously the attic was steaming. I turned the central air control to cool, and...

Josh - I put the part in this weekend. It was kind of hot up in the attic, but not hot enough for the official test. The good news is everything came on after installing the part. Now I just have...

Josh - Using the part number you gave me, I found the relay at Grainger. Or I should say that they are ordering it from York for me. I should have it in a week 1/2. I'll keep you posted after...

I've called 2 HVAC places that were listed in source1parts, but neither have gotten back to me. I left messages with their answering services. I'm not holding my breath that thye'll get back to me....

Josh - You da man! I'll be up in the attic this weekend to get that bad boy out. As soon as the attic heats up, we'll get our answer. I'll keep you posted on my quest for the board. Thanks

I'm in South Windsor, CT. 10 minutes norteast of Hartford. Any suggestions as to where I might get my hands on this transformer/relay combo?

The t-stat is digital. Honeywell (I replaced that too by the way). On the left side of the display is Auto & On... 2 selections. On the right, heat & cool. We have baseboard heat, so the heat...

Yes. I say outside, but I had to take off the cover on the right side of the air handler. This revealed the components you see in the picture. As far as I can tell, this light switch looking...

Thanks Wally... I appreciate your help.

Josh - Yes it's a York around 10-11 years old. I don't think the t-stat wires are in or attached to this switch but I'll have to go up and check as I haven't been up there since last August. I'm...

Wally, I posted the picsfof that switch and the limit type device under it. Could the heat affect this? It almost would make sense. If power doesn't flow through this switch, obviously no power to...

But why would the cooling fan relay work when the temperature in the attic is cooler. Is this fan relay heat sensitive? It seems that once the blower is going, it keeps going.

If it's too hot...

This is an on/off switch located in the attic on the outside of the air handler. One shot is the bottom of the switch and one is inside the switch. Unlike regular light switches, this has that...

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Here in lies the problem. Once the airhandler is on, it will run until I turn it off. Just as long as it goes on before the sun starts to heat up the attic. Last summer I was able to turn on "fan...

No, not fixed. I'm going to attach a pic of a switch that is on the air handler that has a black circular resistor type thing that has two wires on it. Maybe someone can tell me what that is. Last...

Hi Wally - You still here?

Hi Wally - I hoped you enjoyed your vacation. Yes, it was pretty darn hot up there. Crud, I can't believe I forgot to take a pic of the thermal switch thing. I forget where I saw it, but it looked...

The pic is posted.

The pic is posted.

Wally - Here's the pic of the board with the potential relay on it.

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Absolutely... I'll go up there this weekend and get the pics!

Main power goes to a regular on off switch. Then white & black go to the transformer. Also at the bottom of this on-off switch is a small circular type thing with two connectors on it. I think it...

So... strange but true. I turned the fan to "on" Saturday morning just to make sure the air handler would go on. I didn't set the control to "cool" until around 11:30. It's been running like that...

Misso - The Air Handler is a York Model # N4AHD14A06A Serial # EDFS098644 - unit supply 208/230 volts 60 hz. Again, it's cool only. We have baseboard heat. I'd say that it's 10 years old or so. ...

Misso - the fan switch... is that literally a on-off switch? Up at the blower, the main power goes to a light switch... it looks like a regular 2-pole type on-off light switch. From there it goes...

I will. I'll be back up there Friday... loosing a few pounds in the blistering heat of the attic, to put the old transformer back in. I noticed on the air handler that there was a sticker with...

I believe I got a corporate discount due to my employer being in their data base.

Wally - Does the outside compressor have any say as to if the air handler in the attic turns on? i.e. any controls in the outside unit that might be bad causing this problem in the air handler?

Wally - I paid $4.60 for the capacitor at Grainger. Fortunatly they had my company as a customer otherwise they wouldn't have been able to sell to me. They're only business to business.

WM - I replaced the capacitor but no dice.

Misso - Yes, if I push the fan mode, not auto, the fan/air handler comes on and stays on as long as I do it in the morning.. 7:00 AM or so before the attic heats up. If I wait until 10:00 AM or so,...

I'll definitely let you know. As I look at what I've recently removed, I'm thinking it's a transformer. It has a fair amount of weight to it. I'd say 5-6 ounces at least. Anyway, I'll go to...

I had the same problem last summer. I called a HVAC guy. I watched him take the cover off the compressor (outside unit). With the cover off, he pointed out the capacitor and it was very obvious...

Hi Wally - I just got around to replacing the capacitor yesterday morning. Initially I thought that solved the problem because when I came down from the attic, the blower came on.. Of cource it was...

I appreciate your help. I learned/learning allot on this site. So I did some testing these last 2 days after the heat wave. Here's the deal. This has been going on for 2 years now. If we didn't...

So it appears what ever the problem is has become permanent. The air handler fan cut out today around 4:30 and it's not going back on at all. We're expecting some strong storms tonight and relief...

Wally - I have baseboard heat. The furnace isn't involved with the central air unit. I have a compressor outside (York) and the air handler is in the attic suspended from the joists. It's a huge...

Leddfoot - Actually the cooper pipe does lead to the outside as a drainage. There are also the freon lines coming in from the outside condenser. As a side note, I have base board heat. The central...

Leddfoot - There is a drip pan under the unit but it's not used. The system is set up with a pipe that runs from the unit to the outside about 20 feet of pipe. It looks to be about 5/8 cooper pipe....

So after the fan kicked off, I clicked the switch to auto, left the fan off for 10 minutes
And clicked the fan back to the on position and now its working.. weird.

Well all was going well with running the air with the fan set to the "on" position then a few minutes ago, the blower cut out but the compressor outside kept running. I'm going to venture up there...

Wally - Thanks for the heads up on the capacitor. I got shocked a few years back from a capacitor. I didn't get badly hurt but it scared the you know what out of me. It melted the tip of my screw...

Thanks WallyH - I know what the capacitor looks like on the outside compressor unit (I watched a tech replace it a few years ago) Will the capacitor look similar on the blower unit? I'm handy...

I'm not an expert by any means, however we had the same problem and it turned out to be a capacitor in the compressor (outside unit). The tech took off a side panel of the compressor and showed me a...

If I don't turn the central air on in the morning, when the attic is cooler, the air handler won't come on but the compressor outside fires up. At night when the attic cools down, the air handler...