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

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  1. Replies
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    If it doesn't get replaced, I'll give them one...

    If it doesn't get replaced, I'll give them one more try. They have been very good to me so far. Have only charged me for one service visit even though they have been to my place a bunch of times. ...
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    I am afraid I am back again. The companies are...

    I am afraid I am back again. The companies are arguing about replacing the heatpump. Not sure what will happen. I am not sure the HVAC guys can do diagnostic work. They simply check pressures,...
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    Thanks. It will be good to have this behind me!!...

    Thanks. It will be good to have this behind me!!

    One more question. It seems the heatpump has 3 fan settings. My current one was left on high... I think they just leave them on high upon...
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    Update. Guy was here this morning. He said...

    Update.

    Guy was here this morning. He said super heat was high, pressures were high. Cooling temp diff was low (12 degrees). He tried adjusting TXV but couldn't get it to change. TXV worked...
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    Beenthere, thanks for helping!! I just got home....

    Beenthere, thanks for helping!! I just got home. Temp in apartment was 73, 70 degrees outside not much sun coming in. I lowered the Tstat to 70.

    I measured a supply vent in my bedroom. The heat...
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    At the registers. The supply register I used was...

    At the registers. The supply register I used was furthest from the unit. I wasn't thinking there was much temperature delta in the ducts since they basically run just above my ceiling below the...
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    Sorry revive this thread..... more problems it...

    Sorry revive this thread..... more problems it seems. I am looking for some help in deciding to call the guy back or not.

    So the original problem with my heat pump was a low pressure cut out the...
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    Hate to bring this thread up again but it is...

    Hate to bring this thread up again but it is still not fixed. The HVAC guy was here all day Thursday last week. The manufacturer is now paying for all this work. They told him to drain the water...
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    Thanks. After the heat was off for a few...

    Thanks.

    After the heat was off for a few hours, I came home and turned on cool mode. It didn't trip. So it looks like the issue is only with heat. I would guess it's probably a slow TXV, or...
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    I have two TXV's? I don't know. I thought the...

    I have two TXV's? I don't know. I thought the reverse valve only stays in one position mostly.. until you change modes heat to cool.

    I haven't used cooling mode much but from what I have seen it...
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    True. I think Beenthere might be onto something...

    True. I think Beenthere might be onto something with the slow TXV. This unit was installed 2 years ago (before I owned it) and I think they have been adding and removing refrigerant to get it to...
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    I think they said they keep the loop at 70...

    I think they said they keep the loop at 70 degrees. My heat pump doesn't run anywhere near that amount of time. It can't. I have someone above me, below me and on 2 sides. Even when it's -15F I...
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    Hi Beenthere, thanks for the response. It...

    Hi Beenthere, thanks for the response.

    It started fine this morning after being off all night Condo was 70 last night and this morning before raising to 72. Since it's a condo it never really...
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    Well heat worked fine last night and first thing...

    Well heat worked fine last night and first thing this morning (after being off all night). Came on this morning no tripping during two heat cycles then I went to work. Lowered heat again (heat...
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    Well... over a year ago he added some. Then a...

    Well... over a year ago he added some. Then a year ago he took some out because cooling mode wasn't working. Then I bought the apartment and heat wasn't working, so he added some back in, then...
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    Think he got this solved today. I figured I...

    Think he got this solved today. I figured I would update this in case it helps others.

    First thing he did was to put on his gauges and temp probe. Mammoth asked him to check Superheat and...
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    Still dealing with this problem. HVAC guys...

    Still dealing with this problem. HVAC guys coming back Monday. Turns out the manufacturer (Mammoth) says that there should be no low pressure delay needed for this model heatpump. They said the...
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    This looks like the board I need. A pressure...

    This looks like the board I need. A pressure delay is easily set through DIP switches.

    http://www.mammoth-inc.com/Portals/13/Literature/MAMM%20WHSP%20IOM%20HP5A%201011.pdf
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    UPDATE. After waiting for a month for this...

    UPDATE.

    After waiting for a month for this back ordered control board I just called and they are now telling me there is no board for my heatpump!!

    So I have a heatpump that is cutting out on...
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    Does this heat pump come pre charged from the...

    Does this heat pump come pre charged from the factory? I thought they had to charge it when they originally installed it anyway so they are just playing around with what they did in 2011?

    I...
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    Really? I just thought you change the board to...

    Really? I just thought you change the board to allow more delay and that's it. I am no expert. I doubt they were thinning of doing all that but I can ask about it.

    Can I ask why all that...
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    I don't shut it off at night but I do lower the...

    I don't shut it off at night but I do lower the temp to 65. I like it cold when I sleep. Even if I lower it to 65 before bed and outside temps are below -10 F the condo will still be 68 in the...
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    Turns out Mammoth shipped my heat pump with the...

    Turns out Mammoth shipped my heat pump with the wrong control board. The one installed doesn't have a setting for a delay which is not correct. They are covering the cost of a new board and I just...
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    I timed how it long it takes to cutoff when first...

    I timed how it long it takes to cutoff when first started. It's 2 seconds before it starts (once thermostat signals heat) then 13 seconds later it cuts off.

    The service tech ordered a new...
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    Thanks for the help. System was installed in Feb...

    Thanks for the help. System was installed in Feb 2011. Seems like there couldn't be scale build up in that short amount of time. Also, if the TXV were bad wouldn't I have problems other than just...
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