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What was the dew point of the indoor air? What was the saturation temperature of the refrigerant?

I haven't had any design problems to speak of. Usually the problem lies in the installers/service techs not knowing about the new technology and how to set the equipment up correctly. I don't think...

His is a straight cool unit. No reversing valve solenoid, no check valve. But you are right, they do make noise on heat pumps.

As far as the moisture, it's probably normal condensation. The...

Irascible:

Thanks a freaking lot! Now that you've let out our secret, we have to kill everyone who reads this post. It's gonna get messy...

You have it exactly right. I will be very surprised to find out that you are not 100% perfectly comfortable in the house once you get that last jumper finalized. I really doubt you'll end up with a...

We have been exclusively putting 410a Trane units in The Villages now for about 3 years. We have tons of them out there. I'll tell you what though, a 410a leak can be a pain in the arse to find. ...

Trane has lots of info available on these units for dealers. They put on classes. They have Field Service Reps that are a phone call away. Bottom line is that the dealer has to take the time to...

I have used the repair kit on R-22 systems with sucess. The 410A coils that I have found leaking recently have all been around 12-18 months old. We have been replacing the coil rather than...

We are a fairly large company (130 employees) that does a LOT of new construction for retirement communities in central Florida. The main community is around 50,000 and half grown. It is basically...

There is no humidistat "built in".

You still need the jumper from "O" to "Ylo".

If somebody said that, they were probably talking about the inherent dehumidification of the variable speed in...

The red LED you can see through the clear circle in the door is indeed a diagnostic light for the furnace. The green LED indicator can be seen in your electrical picture 5, below and to the right of...

I have found a couple of these recently myself. We've had a few at my shop. 410A systems. It's always (so far at least) on the bottom circuit in the aluminum a few inches past the transition from...

Here's the story about the BK terminal.

BK has a factory jumper to it (W14, which is a loop of wire coming out of the control board located above the W2 terminal) which keeps the BK terminal...

You need the jumper from "O" to "Ylo".

If you take the furnace door off and hold the door switch in (use tape or something), call for cooling from the thermostat. There is a green CFM indicator...

Electrical picture 5, looks like the jumper is missing from "O" to "Ylo" that somebody mentioned earlier. Without this jumper, in cooling mode it will go from 50% of cooling CFMs to 100% after 1...

I was just in another 16i seminar and the Trane guy said that the 16i is not recommended for zoning. I drilled him on why it was not recommended for zoning, but he couldn't give me a good reason. ...

The motor is 120VAC in a gas furnace and 240VAC in an air handler. There is no 24VAC ECM.

The 19i will work wonders for you as long as your installers know what they are doing and set it up...

The outdoor fan motor is probably an ECM (depends on tonnage). In other words, there is no run capacitor since it is a 3 phase motor. He said the fan motor was stalling. If that is indeed what is...

Wouldn't it be nice if someone were to read through SIX pages of posts before they give advice on the first post of the thread?!

Whoops.

Didn't know that...

Did you verify with Trane what factory warranty you DID have? I'm thinking the variable speed air handlers have more than one year. The 16i may also. I know my company almost always sells the 10...

It's a little hard to describe it if you don't know what you are looking for.

If you take off the top panel of the air handler, the check valve is down on the left side of the A coil. If you...

I'm very glad that Trane corporate came through for you. I would have been very surprised and disappointed if they had failed at that.

There is a metal ball inside the check valve that will...

I personally tend to believe that the Trane guy didn't know anything about previous appointments. I have never known a situation (we are a very big Trane dealer) where the Trane rep dragged his...

Good Call. Must have been a Friday night after a 65 hour week when I was typing that :) I corrected my mistake. Thanks.

I'm not positive if that particular model is sensing flame by rectification (single wire going to little bar in the flame), but from what I've read so far, it seems it probably does.

To test, you...

Here is a link to some information that may answer your question. I haven't heard any complaints about humidity levels yet. The variable speed blower is probably a big reason for that.
...

Generally, in my experience, the Trane guys are more than willing to go to a job site of a homeowner that has not been satisfied by the contractor alone. They are usually very on the ball. I do not...

I like the Robertshaw 9720i (heat pump) thermostat. See it here:

http://www.icca.invensys.com/SellSheets/Robertshaw/150-1656E.pdf

You can make the fan come on for a certain number of minutes...

Glad to be able to help.

You ought to do what you can to keep the unit. It seems to be a good design. It hasn't been out long enough for the final ruling to come down.

I know Jax has an...

I just came across this post. I'll add my $.02.

The taystat500c should be set to 3 heat/2 cool as already mentioned.

The first stage compressor circuit, Y1, should be hooked to "Y" (NOT Ylo!)...