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Thread: Cool fail

  1. #1
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    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
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    Atlanta,GA.
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    call for cool and discharge air temp did not drop

  3. #3
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    Mixing oil and fire with a big spoon.
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    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.
    Once you go black...you never go back to galvanized.

  4. #4
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    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.
    Once you go black...you never go back to galvanized.

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

  6. #6
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    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
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    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
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    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
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    Trane is not the only one who does not know how to spell!!!!!!!!!!!

  10. #10
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    Sep 2004
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    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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