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  1. #1

    Walk in pump down

    Hello looking for some help, this is my first post. From the past i would goggle the problem that i had and the answers always came from this site so i thought i would jump on board. I installed heatcraft m/n cht008x6bfm mid temp
    Running on 404a and installed a new evap with the standard txv and solenoid last week. After running 2 days a got a call saying there was ice build up, the ice starts from the bottom and works its way up the coil over time,(not running a time clock). My pressures are 200/60 on 65 degree day with a 40 degree box temp. Seeing that everything is new I decided to turn up the tstat and make sure my unit pumped down and shut off on temp. After doing this my solenoid gets energized and seems to never close all the way leaving the unit running and never pumping down. Has anyone seen a new solenoid be bad.
    Thanks

  2. #2
    Join Date
    Oct 2011
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    Chicagoland Area
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    You got solder in it when you sweated it in.
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  3. #3
    Join Date
    Sep 2005
    Location
    florida
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    Quote Originally Posted by 2sac View Post
    You got solder in it when you sweated it in.

    Yep.
    I love the smell of phosgene first thing in the morning:

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  4. #4
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,754
    Quote Originally Posted by 2sac View Post
    You got solder in it when you sweated it in.
    or you installed it backwards....

  5. #5
    Join Date
    Sep 2007
    Location
    NH
    Posts
    1,158
    Snap it on and off a bunch of times.. Might clean it out. I would just pump it down from the king valve and take it apart and inspect it, clean it, or replace the guts if you burnt it up.

  6. #6
    Join Date
    Feb 2006
    Location
    USA
    Posts
    4,381
    Quote Originally Posted by t527ed View Post
    or you installed it backwards....
    I did that once, just once ...... I now triple check arrows before install & once again before i burn it in

  7. #7
    Join Date
    Jan 2007
    Location
    maine
    Posts
    790
    We had had a bunch of problems with Sporland solenoid valves not closing.. My company wont install them any more after like the 3rd one in a year. One of those was A flare valve too

  8. #8
    Join Date
    Jun 2007
    Location
    Williamsport, PA
    Posts
    172
    I also had problems with new sporlan solinoids, I started oiling them when I put them together and have not had problems since.

  9. #9
    Join Date
    May 2003
    Location
    Utah
    Posts
    733
    Quote Originally Posted by Eastcoastcomfort View Post
    Hello looking for some help, this is my first post. From the past i would goggle the problem that i had and the answers always came from this site so i thought i would jump on board. I installed heatcraft m/n cht008x6bfm mid temp
    Running on 404a and installed a new evap with the standard txv and solenoid last week. After running 2 days a got a call saying there was ice build up, the ice starts from the bottom and works its way up the coil over time,(not running a time clock). My pressures are 200/60 on 65 degree day with a 40 degree box temp. Seeing that everything is new I decided to turn up the tstat and make sure my unit pumped down and shut off on temp. After doing this my solenoid gets energized and seems to never close all the way leaving the unit running and never pumping down. Has anyone seen a new solenoid be bad.
    Thanks
    Ok...regardless of the issue with the solenoid valve youvsay the unit doesn't have a time clock?

    What is the evap temp?

  10. #10
    Join Date
    Dec 2004
    Location
    Chicago area
    Posts
    1,439
    Yeah I think there was some kind of service bulletin on the valves.

  11. #11
    Join Date
    Jan 2012
    Location
    ohio
    Posts
    141
    what is the low pressure switch set at? is the valve horizontal or vertical? if its vertical that could be your problem.i like to install mine horizontal.if its vertical when the solonoid deenergizes it might not be pulling all the way back in.

  12. #12
    Join Date
    Sep 2007
    Location
    NH
    Posts
    1,158
    I see some of the new ones are coming with a little brass washer to help them close. Maybe there was a problem with them.

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