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Type: Posts; User: mickkassem

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  1. Replies
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    An update. Below approximately 38 degrees, the...

    An update. Below approximately 38 degrees, the four ton will run, stop, run a second time ending in a defrost cycle. The tech came back last week and said charge is correct. A Trane "expert" will...
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    Trane XL20i New Install Defrost

    New install of a XL20i with TAM8 A/H and 950 stat. Four ton unit ran 22 times with 8 defrost cycles (aux heat strips on a total of 18 minutes). First night very similar. This unit is supposed to...
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    You are absolutely correct. It is ERR79. Has...

    You are absolutely correct. It is ERR79. Has done it one more time about 10:30 PM. Seems something is going wrong at about 28 degrees.
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    I checked the stat and there are a couple of...

    I checked the stat and there are a couple of error 78's showing. Timing was two nights in a row around 10:30 to 11:30 pm. Not sure if this is pertinent to the problems we have been having or not.
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    They replaced the TXV last year. It is...

    They replaced the TXV last year. It is communicating and there are no recent errors. Also no errors showing on the TAM screen when in Alert History. I just looked and unit Has some frost but...
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    It actually did not help much. Lost the...

    It actually did not help much. Lost the compressor again last night. It was only using the three heat strips. Was only about 27 degrees outside. No frost on outside coil at all and no water...
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    Also, I remember being out there with the tech...

    Also, I remember being out there with the tech when he replaced the temp sensors and showed me exactly where they are supposed to be located. I had thought perhaps one was not in the correct...
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    There are two temp sensors on the outside unit. ...

    There are two temp sensors on the outside unit. They were both replaced. The one that sends the info to the stat is right on compared to another outside sensor we have outside. The defrost board...
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    Tech came. He thinks compressor was "caught in...

    Tech came. He thinks compressor was "caught in defrost mode". Before he arrived, I turned off the power to the TAM which shuts down everything. In a few minutes, I turned it back on and it went...
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    XL20i not heating (TAM8 with 950 stat)

    We have had a problem with the unit for some time. We will hopefully have a replacement unit by the end of the month. Today, the high temp was about 28 degrees. It is now about 17 degrees. We have...
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    Just received following info about "boards." ...

    Just received following info about "boards." "after reviewing all of the part numbers for both a TAM8A and TAM8C, there are no boards that are different. However, the boards are programmed from the...
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    Thank you so much. I spent hours this past...

    Thank you so much. I spent hours this past weekend trying to find out if the problem with the older control board is one of being able to communicate with the variable speed compressor or whether it...
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    Trane TAM8A vs TAM8C

    Have the XL20i and was going to change out to the Trane XV20i but saw something about TAM8A not being able to be used with the variable speed heat pump. Do you know the difference between the TAM8A...
  14. XL20i, Tam8, 950 stat Many many defrost cycles

    Just a follow up to an earlier post. Installation contractor has been great but still not sure what is going on. When it is cold in the morning say 28 to 29 degrees, the XL20i will run then defrost,...
  15. XL20i, Tam8, 950 stat Many many defrost cycles

    I have read a few of the posts regarding many defrosts in the newer Trane's. Some apparently are fixed but many seem to be unanswered. Our unit is three years old. Worked great the first year. ...
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    Trane XL20i, TAM 8, 950 Stat

    We have a really nice heat pump system and a wonderful supplier and installer. I am afraid that I have caused them a lot of work due to our heat pump going into defrost many many times a day. It is...
  17. Power went off for perhaps 5 seconds. Came right...

    Power went off for perhaps 5 seconds. Came right back on. Was not weather related. Stat rebooted.
  18. Trane XL 20i with TAM 8 Air Handler, 950 stat

    System runs Nov and Dec cycling a total of 1952 times with 4 ton cycling 1360 times with a total number of defrost cycles of 30, 15 each month. Power glitch occurs. Now when the four ton unit runs...
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    Optimal fan speed

    Interesting discussion and pertinent to something I have been trying to understand. We have a Trane TAM 8 air handler coupled with a XL20 two/four ton. We also have the nice Comfort color stat. The...
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    Heat Pump Comparison Outlet temps

    We have two Trane systems in a two story home. The upstairs unit in about six years old 3 ton that runs at one indoor blower speed summer and winter. The new unit downstairs is a Trane TAM8 with a...
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    Trane XL950 Stat, Defrost

    I checked the system when the defrost cycle ran and the airflow is at 100% with the TAM8 display showing HPD1 + EH with three black boxes. I know there has to be air flow during defrost but the air...
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    Software

    Thank you so much. I updated software with SD card. It did not update online but indicated it was up to date. It now has a screen that shows both the indoor and outdoor units are online. This has...
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    Software

    Software is up to date according to thermostat and all items show correctly on the advanced setup menu. I really hate to bother the installer over something so trivial. By the way the heater strips...
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    Sorry, I didn't mean to select the thumbs down...

    Sorry, I didn't mean to select the thumbs down icon. It looked like a question mark without my glasses. Not sure how to get rid of it.
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    Trane XL950 stat

    In the standard setup, there is a screen that asked for Indoor Unit Heat Stages. we have a TAM8 air handler with the 15 kW heat strips and the XL20i heat pump. Is it asking for stages of the heat...
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    Kind of obvious but just wanted to be sure I...

    Kind of obvious but just wanted to be sure I checked out everything before making the call. The HUM connection on the TAM8 circuit board is for the humidifer wiring - correct? Checked out your...
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    House humidity reading is 41% and set point is at...

    House humidity reading is 41% and set point is at 45%. I know the indoor reading is high but with that differential, the water valve on the humidifier should be energized - right? Thanks so much for...
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    Settings

    I looked at the Monitor Menu on the TAM8 when heat was on and reading was HUMIDIFIER-ON. I also checked thermostat and under HUMIDIFICATION, the settings were for control of INDOOR RH and...
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    Trane XL950 Stat

    We just had a Trane XL20i heat pump, TAM8 air handler and XL950 thermostat installed. Outside temps just cold enough to get the unit running yesterday.

    For humidification, does the XL950...
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    TAM7 Indoor Blower Timing

    We have our TAM7 set for ENHANCED MODE indoor blower timing where it ramps up and down. We seem to be using more electricity now than we did before when we had a SEER 12 A/C. Now we have the 20i...
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    Trane TAM8

    I was looking online but could fine no updated info about when the TAM8 air handler would be available. Do you have access to the Trane ComfortSite website that might provide updated information?
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    My Trane dealer said the TAM 8 will be out in...

    My Trane dealer said the TAM 8 will be out in late third quarter. Waiting for one now. Have the TAM 7 installed now.
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