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  1. #1
    Join Date
    Jul 2012
    Posts
    10

    York Heat Pump Stellar 12 seer 4 flash code

    Hoping someone can help me. I have a heat pump which is giving me a 4 flash code which means "Discharge temp. didn't reach approx 90 F within 1 hour of compressor operation.

    The service tech changed the temperature sensor, tonight it happened again. Should that sensor be insulated? There's no insulation on it and I'm wondering if there should be insulation wrapped on it. The tech checked the pressure readings and all seemed fine with the unit.

    I don't think that the temperature sensor is the culprit but something is shutting down the outside unit.

    Any help would be much appreciated. I live in Ontario and the evening temperatures are in the -7degree celcius and the evening temp are around -15 C.

    Thanks guys and gals.

    "D"

  2. #2
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,797
    The sensor doesn't need to be insulated. The problem is else where. Could be several different things. Need a good tech on site to find out what it is.
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    How many times must one fix something before it is fixed?

  3. #3
    Join Date
    Jul 2012
    Posts
    10
    thanks beenthere, seems a good tech is hard to find around here. What other different things were you referring to?

    "D"

  4. #4
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,797
    Some of the controls. We're not allowed to go into technical detail here.
    Contractor locator map

    How-to-apply-for-Professional

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

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