Results 1 to 5 of 5
  1. #1
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
    Posts
    2,848

    Mani B model discharge line sensor.

    I heard you could fake out the board using a 20k ohm resistor in its place.
    Anybody done this and could you give details.
    Thanks

  2. #2
    Join Date
    Mar 2007
    Location
    wedged in freezer shelf
    Posts
    6,571
    Any resistance out of the range of a "trip" will fake the board to run when you have another problem.



    I'm not sure if there is really a nuisance or
    nothing wrong trip for a #3 or #4 safety though.
    “If You Can Dodge A Wrench You Can Dodge A Ball”

  3. #3

    Exclamation

    Need to check not guess its easier than guessing and rigging too. But i had the same thing on a b model i had to replace the HPR valve... but you also need to check the TXV bulb. What is the discharge temp and HPR inlet valve temp 5 in freeze and the end?

  4. #4
    Join Date
    Feb 2006
    Location
    Phoenix,AZ
    Posts
    2,848
    Well, 2 weeks ago i replaced the leaking LP switch. At that time i figured that was the cause of the 4 blink safety shut down. Recovered only 9lbs. Should have had 13lbs. But anways, i went back to the place Tuesday to work on a cooler and i check on the ice machine and its down again. Same 4 blink safety. Couldn't work on it. But i did fire it up and it ran for about 30 seconds and tripped again. I'm gonna head back there when i get a chance. First thing i'll do is check actual discharge temp and go from there. Before i found and repaired the leak. I never saw discharge temps exceed 250. It only tripped after i was gone and maybe 2 days later. I really thought the leak was the problem but now i guess it was not.
    Last edited by KB Cool; 07-24-2008 at 12:57 AM.

  5. #5
    Join Date
    Mar 2007
    Location
    wedged in freezer shelf
    Posts
    6,571
    Quote Originally Posted by kbghdg View Post
    First thing i'll do is check actual discharge temp and go from there. I never saw discharge temps exceed 250.
    Check resistance value of thermistor relative to thermistor temp.

    You could be playing with fire jumping out a thermistor for a #4 on this old of a unit.

    I have only done that for a #3
    “If You Can Dodge A Wrench You Can Dodge A Ball”

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event