Search Results - HVAC-Talk: Heating, Air & Refrigeration Discussion

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  1. Doesn't sound "broken". But doesn't sound normal...

    Doesn't sound "broken". But doesn't sound normal and the condenser fan not turning is definitely not normal.
  2. I actually did this at my house. Put in an...

    I actually did this at my house. Put in an electric heat pump water heater in my basement and use the heatpump from april till december. Then straight electric elements for the winter months. Even a...
  3. Only thing I can think of is a wonky defrost...

    Only thing I can think of is a wonky defrost board. That could explain the fans not running when the compressor is. I finally got a ductless heat pump fixed that would randomly stop running and not...
  4. Which unit was making the noise? The first ones...

    Which unit was making the noise? The first ones condenser fan wasn't turning if that's the one making the noise. Was it heating or cooling in the video?
  5. Replies
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    633

    You need someone that can evaluate the whole...

    You need someone that can evaluate the whole system including ductwork and airflow. It would really stink to buy a whole new system and still have the same problems due to inadequate ductwork. There...
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    633

    At 13 years I would replace it. Going up a half...

    At 13 years I would replace it. Going up a half ton won't cut your bills in half, it could even increase them or make you more uncomfortable due to higher humidity. You need to have a manual J done...
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    817

    X2. These units a very charge sensitive. Any time...

    X2. These units a very charge sensitive. Any time I have had to pull the charge and weigh it back in I always charge in grams. Gives much finer resolution with a good scale. Don't give up on these...
  8. Replies
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    817

    Something is very wrong here.According to...

    Something is very wrong here.According
    to Mitsubishi spec in heating it should be pulling 2340 watts or around 10.6 amps. This will occur when the compressor is running at full speed. The low amp...
  9. Keep the appointment as it will provide...

    Keep the appointment as it will provide documentation in case this becomes an ongoing issue. When you flipped the breaker you should leave it off for 15 minutes to properly reset the inverter board....
  10. Replies
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    596

    Ummm, that's not how you check the charge on a...

    Ummm, that's not how you check the charge on a heat pump. Have them weigh in what they took out. It should be in pounds and ounces. Removing 125psi is meaningless as that is a pressure measurement...
  11. 3 ton could be a bit much. Is this one of the...

    3 ton could be a bit much. Is this one of the inverter driven units? If it is you may be okay with that size as they can turn down to as low as 12000btus/hr. I would still do a load calc to be sure....
  12. With mine they will run down to 5F. At that point...

    With mine they will run down to 5F. At that point they shut down. Last winter we had some nights that hit 0F yet they kept on running. Mine are on wall brackets attached to the house so I'm sure they...
  13. I would keep the base board strips in case it...

    I would keep the base board strips in case it gets really cold and the heat pump can't keep up or if you need a quick recovery from a deep setback, say from a vacation. Size for the heating load and...
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    I wouldn't use it but that's just me.

    I wouldn't use it but that's just me.
  15. X2

    X2
  16. Thread: freezing up

    by JDenyer232
    Replies
    3
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    411

    I don't see how it's freezing at 140 psi. The...

    I don't see how it's freezing at 140 psi. The saturation temp at that pressure is 49 degrees Fahrenheit.
  17. I'm not familiar with this stat. Is it battery...

    I'm not familiar with this stat. Is it battery powered? If so are the batteries fresh?
  18. I would probably go with Mitsubishi but finding a...

    I would probably go with Mitsubishi but finding a good installer is more important than the actual brand. If you go with Mitsubishi make sure they are a diamond dealer. Diamond dealers have had...
  19. Replies
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    432

    Could be a little low on refrigerant and the...

    Could be a little low on refrigerant and the liquid is flashing to gas in the drier. Being a fairly new system the charge may not have been optimized at install or you could have a leak. Call a tech...
  20. Replies
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    597

    I would probably go with a 2ton, with two indoor...

    I would probably go with a 2ton, with two indoor units. You can oversize these minisplits a bit if you buy a unit that is inverter driven, essentially a variable speed compressor. Inverter units are...
  21. Replies
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    563

    How long ago was it installed? If recently then...

    How long ago was it installed? If recently then have the installing company fix it. Shouldn't cost you anything if it hasn't been right from day one. A 15 degree split may be ok if the indoor...
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    563

    Be careful of having a buddy do this on the side....

    Be careful of having a buddy do this on the side. All to often I have seen the results and they are not pretty. That said you have a bigger issue going on here and a txv will not fix it. Think under...
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    572

    X2, plus higher head pressure equals higher...

    X2, plus higher head pressure equals higher compression ratio equals an increase to your electric bill.
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    675

    Yes they are precharged but the indoor units and...

    Yes they are precharged but the indoor units and linesets are pressurized with dry nitrogen which needs to be removed with a vaccum pump. The charge is held in the outdoor unit(condenser). The...
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    909

    What he said.

    What he said.
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