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Thread: Heat Pump acting strange

  1. #1
    DIY Junior Member chrisf8657's Avatar
    Join Date
    Feb 2010
    Phoenix, AZ

    Default Heat Pump acting strange

    Hi experts,

    We had a hail storm here in Glendale (suburb of Phoenix) a couple months ago. It damaged alot of roofs, and most in the neighborhood are needing replacement now. However, it also damaged alot of Heat pumps. Ours is about a 6-7 y/o Goettl. The Insurance (Allstate) recommended roof replacement for the whole house, but for the Heat Pump recommending combing the fins out.

    Our A/C guy of 10+ years came out, and tried that. The fins just broke off and he wasn't able to do it.
    The insurance company is currently arguing with him about. He finally said to go ahead and come out here and try it themselves, but of course with Insurance companies, they still say he can comb the fins out, when he can't.

    Anyways, that's the back story.

    Here's the problem:
    Over the last couple weeks - the Pump (we are on heat ATM, it gets down to the 40's in the night), the heat pump in the coldest parts of the night (2-5AM - I am a night owl and I smoke, so I go outside), is making this sound when I am outside:

    *Click* ---- Hisssssssssssssssssssssss ----- *Click Click* (repeat anywhere from 3-10 seconds later depending on the night's temp)

    AFAIK, this is the defrost cycle, but it NEVER did it every 3-10 seconds before. I'm afraid the unit is getting ready to fail.

    Anyone have an idea without getting another $100 service call?

    PS: This unit is on the roof, but loud enough with the clicks and hiss I can hear it.

    Last edited by chrisf8657; 01-28-2011 at 04:54 AM.

  2. #2
    DIY Junior Member tempritespokane's Avatar
    Join Date
    May 2011


    The noise your hearing is the valve switching to defrost mode. This is normal. Its the hot gas switching around and will make a hissing sound.

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