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  1. #1
    Join Date
    Aug 2012
    Location
    Iraq
    Posts
    1,134

    craft 2 ton heating mode problem

    hi
    i have 2 ton craft split unit
    it had leak so i repair it
    when i charged the system
    it work peftectly in cooling mode
    11 a current
    40 psi suction line pressure
    but when i change it to heating mode
    the discharge pressure increases gradually
    starting from
    8 ampere
    100 psi
    reaching 475 psi
    and current reach 25 a
    so compressor start opening relief valve
    so pressure decrease to 350 psi then increase to 475 psi
    so what is the problem
    i checked both capillary tube and filter in outdoor unit they are working very good
    voltage is 220 v
    can it be blockage in the indoor unit

  2. #2
    Join Date
    Aug 2012
    Location
    Iraq
    Posts
    1,134
    up

  3. #3
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
    Posts
    2,895
    40 psi seems a little low! Maybe your indoor coil is packed with dirt!!!!

  4. #4
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,795
    What refrigerant are you using.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  5. #5
    Join Date
    Sep 2002
    Location
    Virginia
    Posts
    3,335
    maybe insulation came off indoor unit and blocking coil

  6. #6
    Join Date
    Aug 2012
    Location
    Iraq
    Posts
    1,134
    Quote Originally Posted by KB Cool View Post
    40 psi seems a little low! Maybe your indoor coil is packed with dirt!!!!
    i cleaned it
    and i charged it to 50 psi

  7. #7
    Join Date
    Aug 2012
    Location
    Iraq
    Posts
    1,134
    Quote Originally Posted by beenthere View Post
    What refrigerant are you using.
    arkime freon 22

  8. #8
    Join Date
    Aug 2012
    Location
    Iraq
    Posts
    1,134
    Quote Originally Posted by Snapperhead View Post
    maybe insulation came off indoor unit and blocking coil
    can you explain more

  9. #9
    Join Date
    May 2011
    Location
    Western, KY
    Posts
    3,261
    Quote Originally Posted by kefah View Post
    hi
    i have 2 ton craft split unit
    it had leak so i repair it
    when i charged the system
    it work peftectly in cooling mode
    11 a current
    40 psi suction line pressure
    but when i change it to heating mode
    the discharge pressure increases gradually
    starting from
    8 ampere
    100 psi
    reaching 475 psi
    and current reach 25 a
    so compressor start opening relief valve
    so pressure decrease to 350 psi then increase to 475 psi
    so what is the problem
    i checked both capillary tube and filter in outdoor unit they are working very good
    voltage is 220 v
    can it be blockage in the indoor unit
    Kefah you have enough posts to apply for pro membership, in the locked pro forum you can get detailed technical info for anything you ask.

  10. #10
    Join Date
    Sep 2002
    Location
    Virginia
    Posts
    3,335
    Does the indoor unit have options for fan speeds ?

    When you turn on heat , make sure the fan is blowing on high

    Never heard of a Craft .... but on older units , the insulation inside the air handler itself will begin to fall apart after years of operation.

  11. #11
    Join Date
    Aug 2012
    Location
    Iraq
    Posts
    1,134
    Quote Originally Posted by mason View Post
    Kefah you have enough posts to apply for pro membership, in the locked pro forum you can get detailed technical info for anything you ask.
    thanx
    i will try it

  12. #12
    Join Date
    Aug 2012
    Location
    Iraq
    Posts
    1,134
    Quote Originally Posted by Snapperhead View Post
    Does the indoor unit have options for fan speeds ?

    When you turn on heat , make sure the fan is blowing on high

    Never heard of a Craft .... but on older units , the insulation inside the air handler itself will begin to fall apart after years of operation.
    yes i choose high speed
    but it automatically
    start with low speed then full speed

  13. #13
    Join Date
    Aug 2012
    Location
    Iraq
    Posts
    1,134
    the cause was reversing valve
    i changed it

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