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Thread: Cool fail

  1. #1
    Join Date
    Jun 2006
    Posts
    147

    Cool fail

    It's easier to ask than hunt for the manual. What initiates the "Cool Fail" on the display of a Voyager Heat Pump's digital stat. Thanks, Ken

  2. #2
    Join Date
    Feb 2006
    Location
    Atlanta,GA.
    Posts
    874
    call for cool and discharge air temp did not drop

  3. #3
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,330
    cool fail:

    1. Cooling and/or heating set point (slide pots) on ZSM have failed.
    2. Zone temperature thermistor ZTEMP on ZSM failed.
    3. CC1 or CC2 24 VAC control circuit has opened.
    4. CPR1 or CPR2 DISABLE circuit (LPC) opened, during 3 minute minimum ON time, on 4 consecutive compressor starts.
    5. Open circuit on programmable sensor terminal 12 at LTB.
    "Mother" is the name for God on the lips and hearts of children....The Crow

  4. #4
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,330
    sorry, i missed the whole digital tstat thing.

    if it only displays "COOL FAIL" then: No communication between terminals 11 and 12. Verify changing voltage.
    "Mother" is the name for God on the lips and hearts of children....The Crow

  5. #5
    Join Date
    Oct 2006
    Posts
    77
    Does it have microcontrols or reliatel?
    Trane service, and Supertek65 fan club president, midwest chapter

  6. #6
    Join Date
    Nov 2006
    Location
    South Carolina
    Posts
    3
    most common problem for cool fail is LPC opening due to refrigerant circuit problem or defective LPC. verify circuit through LPC proper open and close pressures. test while system in heat, defrost & cool mode

  7. #7
    Join Date
    Dec 2005
    Posts
    1,913
    Because it is a piece of junk Trane. I can wire a lock-out relay and it does the same ting as that piece of junk called Reliatel board. Enough bassing the brand - SORRY

    Cool failed cause by:

    Low pressure switch open 4 times with one call of cool.
    Open coil or shorted coil of the contactor.
    High pressure open one time.

    They are all automatic reset. So take your pick.

    My recommend is to check you double pole relay that energizes your outdoor fan. Either the board forget to send the 24 volt out or its point are not made.

    Good luck

    Can't stop the TRANE. If they cannot spell the word TRAIN, how can they design the unit. My bad again

  8. #8
    Join Date
    Sep 2004
    Location
    Kansas City, Kansas, United States
    Posts
    13,832

    hvacowboy

    Quote Originally Posted by hvacowboy View Post
    Does it have microcontrols or reliatel?
    where have you been Brad?
    red bird hunting!
    I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
    YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!

  9. #9
    Join Date
    Dec 2006
    Location
    Hartford, Connecticut
    Posts
    442
    Trane is not the only one who does not know how to spell!!!!!!!!!!!

  10. #10
    Join Date
    Sep 2004
    Location
    Kansas City, Kansas, United States
    Posts
    13,832

    spelling

    Quote Originally Posted by twisted pair View Post
    Trane is not the only one who does not know how to spell!!!!!!!!!!!
    TING BASSING
    I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
    YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!

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