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  1. #1
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    Confused Trane condensor fan loseing power for a brief second

    Was performing a PM on a new client with two Trane split systems. 410A
    Model# 4TTA3060A30000BB 208 3ph
    Serial # 110751R15F

    When I was checking the condensers, I notice the fan motors would lose power for a brief second. I noticed they both had the factory low ambient kits on them. Part # BAYLOAM103. It was about 70 degrees out so I would think that they should not be cycling at all. There was no literature with the unit so I could not diagnose the problem. When I disconnected the OAT sensor on each unit they both stopped doing it and ran fine. The green led on the board seemed to flash odd also without a steady heartbeat when the fans would lose power. I did not have time to check the charge but that was my first thought that they may be low on refrigerant. I also noticed a red LED flashing but again I had nothing to tell me what it was. If anyone can get me the info or has experience with this type of low ambient that would be great. Thanks in advance.
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  2. #2
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    Quote Originally Posted by qwerty hvac View Post
    It was about 70 degrees out so I would think that they should not be cycling at all. There was no literature with the unit so I could not diagnose the problem.
    Check your email. I sent you some info on this low ambient kit. Can't post technical data in this "OPEN" forum.

    I didn't read the instructions, but I think these kits do start cycling the fan at about 70ºf.
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  3. #3
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    Thanks. I will check it out. Should have posted in the pro section.


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  4. #4
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    I wonder if they wired it wrong. It says if the Orange is not wired correctly it will not work right. Also the red light was flashing on both boards. I would not think both units have bad low ambient controls. They are less then a year old.


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  5. #5
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    Quote Originally Posted by qwerty hvac View Post
    I wonder if they wired it wrong. It says if the Orange is not wired correctly it will not work right. Also the red light was flashing on both boards. I would not think both units have bad low ambient controls. They are less then a year old.
    That easily could be.

    I briefly looked over the manual and it looks like you can test it to see if it is operating properly.
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  6. #6
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    I did hit the test button and it did cycle on and off but the red led was flashing. I will have to check this out before it gets colder.


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  7. #7
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    Quote Originally Posted by qwerty hvac View Post
    I did hit the test button and it did cycle on and off but the red led was flashing. I will have to check this out before it gets colder.
    As you probably noticed in the manual, Flashing RED is a fault in one of the two sensors.
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  8. #8
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    Quote Originally Posted by rundawg View Post
    As you probably noticed in the manual, Flashing RED is a fault in one of the two sensors.
    Yes I did see that. That is where I am going to start. When I removed the ambient sensor the control stopped cycling the fan.


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