Search: Posts Made By: mikemo
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07-10-14, 04:23 AM
Replies: 31
Views: 1,787
Posted By mikemo

New a/c system went in yesterday. 3 ton Trane...

New a/c system went in yesterday. 3 ton Trane XL18i and TAM7 air handler. After giving the new system an hour to stabilize, I re-ran the test. The installer had a flow hood so we were able to measure...
07-03-14, 11:53 AM
Replies: 31
Views: 1,787
Posted By mikemo

Well, we found some interesting things the last...

Well, we found some interesting things the last few days. I had a different a/c guy come out and look over the system. He spent several hours and was still scratching his head. Here's what he found. ...
06-30-14, 06:03 AM
Replies: 31
Views: 1,787
Posted By mikemo

Yes, I question my readings too. I have an...

Yes, I question my readings too.

I have an old, but accurate, Taylor dual bulb mercury thermometer with a wet-bulb wick. Resolution is only 0.5 degrees F at best. I also have a thermocouple probe...
06-27-14, 12:14 PM
Replies: 31
Views: 1,787
Posted By mikemo

Ok, something is certainly wrong, if my numbers...

Ok, something is certainly wrong, if my numbers are correct. I measured wet bulb temps at the intake and a vent, and used the enthalpy chart that "HVAC Retired" linked to in another thread.

These...
06-27-14, 09:54 AM
Replies: 31
Views: 1,787
Posted By mikemo

Thanks for all the feedback guys. I have another...

Thanks for all the feedback guys. I have another measurement I made that I would like some feedback on, if possible.

As you know, my system is measuring a split of 13 degrees or so. I took some...
06-26-14, 10:45 AM
Replies: 13
Views: 3,633
Posted By mikemo

I installed the Honeywell VisionPRO 8000 (...

I installed the Honeywell VisionPRO 8000 ( TH8320WF1029 ) this morning to replace the failed Trane TCONT803. Everything is working perfectly. I wanted to post a follow-up just in case someone else...
06-25-14, 08:54 PM
Replies: 31
Views: 1,787
Posted By mikemo

Sorry, but we weren't talking about measured...

Sorry, but we weren't talking about measured pressures. I was trying to use the Trane documentation for the compressor to calculate what my subcooling should be. All I have is a thermometer.

If...
06-25-14, 05:00 PM
Replies: 31
Views: 1,787
Posted By mikemo

One more data point that I was looking for some...

One more data point that I was looking for some feedback on. I put a clamp-on amp meter on the 240vac input to the outside unit. It was only measuring 8 amps. That seemed low to me.

The thermostat...
06-25-14, 03:49 AM
Replies: 13
Views: 3,633
Posted By mikemo

Thanks Houston. Maybe I should have asked my...

Thanks Houston.
Maybe I should have asked my question differently. I know that the thermostat controls the air handler and compressor by sending different 24vac signals to it. What I'm trying to...
06-24-14, 11:59 AM
Replies: 13
Views: 3,633
Posted By mikemo

Sorry for the delay, but I've been dragging my...

Sorry for the delay, but I've been dragging my feet over this swap. I've been reading the Honeywell document, and I had a question about the test sequence.

Page 9 shows the test modes. I assume...
06-21-14, 04:42 PM
Replies: 31
Views: 1,787
Posted By mikemo

I think I understand. If the evap was absorbing...

I think I understand. If the evap was absorbing more heat, the outdoor split would be higher. Since the airflow isn't blocked, it could be the refrigerant system is not right. I suppose that it's...
06-21-14, 12:27 PM
Replies: 31
Views: 1,787
Posted By mikemo

Thanks for the replies. Outside air measured...

Thanks for the replies.

Outside air measured at the condenser 91.1.
Exhaust out of top of condenser 99.8

It is a 17 SEER unit.

The airflow inside seems strong.

I can see the evaporator...
06-20-14, 02:53 PM
Replies: 31
Views: 1,787
Posted By mikemo

a/c performance test help please

I'm questioning the performance of my ac system and was hoping for a little feedback before I call in a repair guy.

The equipment is:
Trane 4TWX6036 heat pump (XL16i)
Trane 4TEE3F40 air handler...
05-23-14, 12:58 PM
Replies: 13
Views: 3,633
Posted By mikemo

Thanks guys. Can you explain the difference...

Thanks guys.

Can you explain the difference between function 170 set at 11 and set at 8? Does it have to do with the heat pump needing to drive the Orange reversal valve wire?

Just out of...
05-23-14, 11:33 AM
Replies: 13
Views: 3,633
Posted By mikemo

Everything seems straightforward, but I do have a...

Everything seems straightforward, but I do have a question.
My Trane thermostat has a single white wire going to W1, which I think is supposed to turn on the heat strip for emergency heat. I assume...
05-19-14, 12:04 PM
Replies: 13
Views: 3,633
Posted By mikemo

Thanks Houston! I appreciate the feedback. ...

Thanks Houston! I appreciate the feedback.

The mounting plate and connector from the Honeywell looks almost identical to the Trane.

The one major difference is that I have a white wire in a...
05-17-14, 06:48 AM
Replies: 13
Views: 3,633
Posted By mikemo

Trane TCONT803 Replacement

The touch screen on my 6 year old TCONT803 has stopped working. Even though it is covered under the "10 year" warranty by Trane, the company that did the original installation wants to charge me over...
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