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  1. #1
    Join Date
    Apr 2010
    Location
    Sussex County, Delaware
    Posts
    82

    Problem with York Predator DH150

    Hope someone may be able to help. We have a York DH150S204DAA3 package unit that keeps locking out in cooling with an alarm code of 9. According to the code list this is showing an ignition board lock out.

    Checked both compressors pressures 200 head 73 suction 10 degree SC, 8.1 RLA. First stage runs all the time with no problem, when second stage is energized it will run 8-10 minutes then the board will lock out with the 9 code.

    We are thinking a bad board but just are looking for any other input.

    Thanks.

  2. #2
    Join Date
    Sep 2011
    Location
    IL
    Posts
    7
    the only thing i would check prior to agreeing that its possibley the board would be the voltage .. it is dirty? how bad is the drop when it starts and is it stable on full load..

  3. #3
    Join Date
    Jul 2010
    Location
    So-Cal
    Posts
    580
    9 is a code for the heating control section. I have the predator training manual. It says. A nine flash code indicates a problem in the heating control section. The UCB monitors the gas valve voltage and W1. This alarm occurs if a heat call W1 is made but the voltage from the gas valve is not read for a continous 5-minute period. This alarm code will also occur and the fan will be locked on if a voltage is sensed from the gas valve but there is no W1 call.

    Hope this helps.

  4. #4
    Join Date
    Aug 2008
    Location
    Austin, TX
    Posts
    28
    Im assuming you have the simplicity boards installed in this unit?

  5. #5
    Join Date
    Apr 2010
    Location
    Sussex County, Delaware
    Posts
    82
    ktxkrew - Im assuming you have the simplicity boards installed in this unit?

    I'm not sure. One of my techs called me last night asking about the problem. The unit is at his church that we service. I'll ask him this morning.

    jackintheboxtec - 9 is a code for the heating control section. I have the predator training manual. It says. A nine flash code indicates a problem in the heating control section. The UCB monitors the gas valve voltage and W1. This alarm occurs if a heat call W1 is made but the voltage from the gas valve is not read for a continous 5-minute period. This alarm code will also occur and the fan will be locked on if a voltage is sensed from the gas valve but there is no W1 call.


    Thanks for the info. He said there is no call for heat but I'll have him double check he is not getting and voltage on W1 when the second stage calls or if there is voltage at the gas valve when second stage calls with no W1 call.

    G-S-X - the only thing i would check prior to agreeing that its possibley the board would be the voltage .. it is dirty? how bad is the drop when it starts and is it stable on full load..

    I'll have him double check that today. Thank you all for the input. I have been trying to get a service manual from my supplier but they can be a little slow sometimes.

  6. #6
    Join Date
    Jul 2007
    Location
    Virginia
    Posts
    5,590
    Quote Originally Posted by BigDog91 View Post
    I have been trying to get a service manual from my supplier but they can be a little slow sometimes.
    Check your e-mail.
    Instead of learning the tricks of the trade, learn the trade.

  7. #7
    Join Date
    Aug 2008
    Location
    Austin, TX
    Posts
    28
    Hold on your first post was about circuit 2 cooling lockouts. A heating alarm shouldn't be affecting just circuit 2. U may be reading the wrong boards alarm
    UA LOCAL 286

  8. #8
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    18,558
    With no W1 call and no damage to cabling or the board, its time to replace the board.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







  9. #9
    Join Date
    Dec 2002
    Location
    SouthEast NC ICW & Piedmont Foothills
    Posts
    7,635
    Quote Originally Posted by rundawg View Post
    Check your e-mail.


    don't be bashful
    It`s better to be silent and thought the fool; than speak and remove all doubt.

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