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  1. If it was me I would double check the stat...

    If it was me I would double check the stat configuration and if an issue isn't seen there the field terminations at the unit.

    As strange as it is Carrier commercial heat pumps have to be wired and...
  2. New installation of unit or stats? Silly...

    New installation of unit or stats?

    Silly question...are the stats set up as gas packs? W=call for heat Y=call for cool, O/B unused.
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    So the switch is seeing good w.c., the switch is...

    So the switch is seeing good w.c., the switch is opening up and a new switch didn't correct.

    At this point if I was in your place I would get in touch with Tech Support at your distributor.
    ...
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    Like others have said you'll have issues with...

    Like others have said you'll have issues with airflow if you PSC is only single stage, I don't know the Armstrong product the indoor unit may be good to go just depends on what its capable of.

    I...
  5. Thread: Carrier guys ?

    by 0351
    Replies
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    1,763

    That is a muffler in the discharge line. The...

    That is a muffler in the discharge line.

    The line is piped like that mostly I'd imagine to prevent vibration transfer, I would leave the pipe as is if you would like to take out or replace the...
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    Here is a quote out of some training for copeland...

    Here is a quote out of some training for copeland scrolls. Copelands AE bulletins mention not to go into a vacuum but they don't really explain why not.

    In simple terms this means that it is...
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    Only test you can really do is ohm out the sensor...

    Only test you can really do is ohm out the sensor to see if its reading right, 10k NTC I believe on those. Might could heat it in your hand/a bit of water to see if it rises on the stat.

    If it is...
  8. Thread: Whistling TXV

    by 0351
    Replies
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    1,011

    Whistling TXV, I would take a look at how the low...

    Whistling TXV, I would take a look at how the low ambient kit is set, I've never seen this in person but I have heard that a liquid and vapor mix entering the TXV metering stem will cause a...
  9. Replies
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    You're on the right track but there just isn't...

    You're on the right track but there just isn't anything definitive. I was going to suggest re-install like the previous poster and then to get your local distributor involved.

    Typically if a...
  10. Replies
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    I would look in the model/serial section of the...

    I would look in the model/serial section of the thermostat to confirm that it is showing the correct model number. I assume the unit works fine in cooling so wiring should be good to go. I would...
  11. Replies
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    Is this the only time you see the issue, runs...

    Is this the only time you see the issue, runs fine high low cooling and component test?

    Are you using the Infinity stat?

    EDIT: I just noticed you said code 34, flame proving failure on start...
  12. Replies
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    Yup important to know when its happening. If...

    Yup important to know when its happening.

    If the temp rise and gas pressure were good you might want to talk to the homeowner about how their using the system. In my area with ductwork attic and...
  13. Replies
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    Unfortunately I think you have done all you can...

    Unfortunately I think you have done all you can do by using the quiet shift.

    If you were in a warmer climate for winter I'd suggest taken some charge out and see if the sound improves but I...
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    396

    By interface sensor do you mean the thermostat?

    By interface sensor do you mean the thermostat?
  15. Replies
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    396

    I'll post the links since the files is to big to...

    I'll post the links since the files is to big to attached

    OM
    http://www.docs.hvacpartners.com/idc/groups/public/documents/techlit/omzonekit-3.pdf

    Some install info about the comfort zone 2
    ...
  16. Replies
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    1,443

    Clapped down TXV possible, might try heating up...

    Clapped down TXV possible, might try heating up the bulb to get it to open.

    If suction is dropping on start up I wouldn't be looking at the compressor just yet.
  17. Replies
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    This may help if you don't already have ...

    This may help if you don't already have

    http://www.docs.hvacpartners.com/idc/groups/public/documents/techlit/zone-01dg.pdf
  18. here you go ...

    here you go
    http://www.docs.hvacpartners.com/idc/groups/public/documents/techlit/25vna-01pd.pdf

    Its true that on service or install it would be unlikely to see the low % on the compressor since...
  19. 3 & 5 ton can reduce down to 40% capacity 2 & 4...

    3 & 5 ton can reduce down to 40% capacity
    2 & 4 ton can reduce down to 50%

    Edit: if you are wondering the reason they are grouped like that is 2/3 and 4/5 have the same inverter.
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    BAUH-F060 Install Manual

    Hi y'all,

    I was just wondering if anyone had the manuals for these.

    Thanks,
  21. Replies
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    710

    My 2 cents, saddle tap on the discharge line of...

    My 2 cents, saddle tap on the discharge line of the compressor, shouldn't get much of a pressure drop in the cond coil between the discharge and service valves, can also do the same thing on a...
  22. Replies
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    1,079

    Airflow is a good thing to check, if you get a...

    Airflow is a good thing to check, if you get a call back confirm heat rise, gas pressure and if you have an N-coil for the evap that doesn't match the furnace casing size wise make sure its...
  23. Replies
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    Just not pushing enough liquid to the metering...

    Just not pushing enough liquid to the metering device.

    Let us know how it goes, low split backwards high/low my moneys on the compressor.

    If it was a Heat Pump bad RV could produce the same...
  24. Replies
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    7,935

    Discharge line temp could be used to check the...

    Discharge line temp could be used to check the compressor.

    High Side Sat temp should be +20 ambient (15-50 superheat on DL).

    Low temp IIRC no heat of compression.
  25. Replies
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    3 phase reverse rotation - Why/how

    Hi Guys,

    I was just wondering why 3 phase compressors/fans run backwards sometimes?

    I know reversing any 2 leads will fix the issue and it always seems too but I was curious as to if there is a...
  26. Replies
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    Just FYI Carrier TXVs are set for 4-12 SH at the...

    Just FYI Carrier TXVs are set for 4-12 SH at the Evap.
  27. Replies
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    It is a 5 ton A/C + furnace R410A, just had the...

    It is a 5 ton A/C + furnace R410A, just had the ducts sealed so they "should" be good.

    Never thought about the electric heat issue, I'll keep that in my toolbox if I see the same issue on a fan...
  28. Replies
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    Yuppers liquid at ambient or below=liquid line...

    Yuppers liquid at ambient or below=liquid line restriction was my first thought, I was just excepting higher high side.

    Refrigerant cycle dxing is definitely a weak point for me as itís so...
  29. Replies
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    2,509

    Causes for low delta T over evap?

    Hi Guys,

    Can't wrap my head around something for some reason today, any ideas.

    With good subcooling (14) and superheat (13) and good airflow (350 per ton verified) what could be the cause of a...
  30. Thread: Lights Dimming

    by 0351
    Replies
    48
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    4,112

    Great info In the OPs case wouldn't a voltage...

    Great info

    In the OPs case wouldn't a voltage drop also have been seen with the old unit if this was the case?
  31. Thread: Lights Dimming

    by 0351
    Replies
    48
    Views
    4,112

    I thought all induction motors had the potential...

    I thought all induction motors had the potential to dim the lights even if everything is sized correctly.

    Did the old unit have a start and run cap for the comp?

    Somewhat guessing but I think...
  32. Replies
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    nevermind no kit should be needed.

    nevermind no kit should be needed.
  33. Replies
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    Might want to give your local distributor a call,...

    Might want to give your local distributor a call, IIRC it is approved with a kit.

    The limit tripping issue happens on all N-coils+furnaces just gotta position the coil correctly so it isn't...
  34. Thread: Carrier 24ANA736

    by 0351
    Replies
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    1,181

    A 24ANA7 Should have a two stage Bristol recip...

    A 24ANA7 Should have a two stage Bristol recip comp in it. (should have a high and low contactor)

    High stage failure is related to a VS-VR trip, control board doesn't sense voltage when it should...
  35. Replies
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    How do ya'll feel about changing the compressor...

    How do ya'll feel about changing the compressor oil on a moisture bound system?

    Reasonable or just let the drier do its thing?
  36. Replies
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    Why? Coil is R-22 right, a triple evac with...

    Why?

    Coil is R-22 right, a triple evac with nitro purge would have ensured there was no moisture in the system.
  37. Replies
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    How did you come out on this one? As...

    How did you come out on this one?





    As someone mentioned how the coil sits on the furnace can effect airflow but typically that will show as high temp limit trips.

    A blower freeze test...
  38. Thread: Hi Ya'll

    by 0351
    Replies
    2
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    909

    Hi Ya'll

    Hi everybody,

    Just wanted to introduce myself to the forum.

    I'm new to the industry been in it a little less then a year. I'm looking to learn everything I can about it and I've learned a lot...
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