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  1. Replies
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    Have the blower wheel, housing, and motor cleaned.

    Have the blower wheel, housing, and motor cleaned.
  2. Replies
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    188

    Call a technician to troubleshoot. It is more...

    Call a technician to troubleshoot. It is more likely a wire problem than intermittent faulty board.
  3. It is normal. The AOC board comes as part of the...

    It is normal. The AOC board comes as part of the replacement inverter. The full serial and model numbers are programmed into the original board on the assembly line. The UI should have generic...
  4. Replies
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    188

    It's not a faulty board. Is there a condensate...

    It's not a faulty board. Is there a condensate safety switch connected to this system?

    Might still ill need the wiring replaced.
  5. Replies
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    Might be time for the OP to call a techncian....

    Might be time for the OP to call a techncian. They have them in the Bahamas.
  6. Replies
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    Do the units you have issues with have the indoor...

    Do the units you have issues with have the indoor units above the outdoor?
  7. Max voltage is listed on the unit. Somewhere...

    Max voltage is listed on the unit. Somewhere around 253 volts. Your contractor needs to find the cause of the board failure. It is unlikely 254 volts.
  8. Thread: New install

    by comfortdoc
    Replies
    140
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    5,806

    I doubt it was sabotage. It was more likely...

    I doubt it was sabotage. It was more likely ignorance and hubris.

    I have seen many installed by excellent commercial mechanics that were too proud to read the installation instructions. Some had...
  9. Thread: New install

    by comfortdoc
    Replies
    140
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    5,806

    Your biggest problem is the furnace cannot be...

    Your biggest problem is the furnace cannot be direct vented the way it is butchered. The burner vestibule must be sealed and there is now no way to do that and still be in compliance with the UL...
  10. As mentioned if the system is properly serviced...

    As mentioned if the system is properly serviced and new drier installed, there should be no moisture. Has no way to magically get in the sealed system. With 410a there is likely bubbles even when...
  11. Glad it worked out.

    Glad it worked out.
  12. X2. Replace the coil if it is leaking, not...

    X2. Replace the coil if it is leaking, not because it is rusty. They rusty part doesn't leak refrigerant.
  13. Replies
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    189

    The internal relief valve opened. Get someone...

    The internal relief valve opened. Get someone with experience to help you troubleshoot this.
  14. Are you sure it's not a 10 yr warranty? When did...

    Are you sure it's not a 10 yr warranty? When did you close on the home? Most manufacturer's warranty starts on day of closing.
  15. Only if fan switch is set to ON instead of AUTO.

    Only if fan switch is set to ON instead of AUTO.
  16. Replies
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    Get ahold of the NJ Clean Energy program and see...

    Get ahold of the NJ Clean Energy program and see how you get en energy audit of the house. I believe that includes load calculations.
  17. Poll: Complain to AHS loudly and see if they will speed...

    Complain to AHS loudly and see if they will speed things up, or allow you to call someone else and pay the bill. It's time to get proper sizing calcs done and plan to replace that system. I would bet...
  18. Replies
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    321

    Have a licensed contractor replace the entire...

    Have a licensed contractor replace the entire system. You are wasting money trying to bandaid what you have.
  19. Did anyone check the penetrations where the...

    Did anyone check the penetrations where the line-sets and drains go through the wall?
  20. Replies
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    328

    Man J is nay the first step. You know need to...

    Man J is nay the first step. You know need to look at combination ratings to see what is the best match. Might be a 12k system that gets slightly more than 12k.

    It it is time for an installer to...
  21. First thing to check is the hole where the line...

    First thing to check is the hole where the line set exits the house. If that is not sealed, it will draw humid air in from outside.

    If it turns out it is only because the units are oversized maybe...
  22. Replies
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    328

    Verify the info you entered for sizing is...

    Verify the info you entered for sizing is correct. If so the 12,000 will probably do it, but total capacity is dependant on model of indoor and outdoor selected. Most ductless have a 15k available.
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    328

    Need the load calculations done to size properly....

    Need the load calculations done to size properly. Try loadcalc.net
  24. Replies
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    388

    What is the SH? What are the static pressures at...

    What is the SH? What are the static pressures at the unit? Air temp entering unit and leaving coil?
  25. Drill a hole. Then you can check static pressure...

    Drill a hole. Then you can check static pressure also.
  26. Do the same thing, but skip the water. See if you...

    Do the same thing, but skip the water. See if you get the same result.
  27. Replies
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    391

    This is not true.

    This is not true.
  28. You will probably get a better solution from...

    You will probably get a better solution from someone at the house that can see all available options.

    Seeme like a consultation with an exterminator might be in order.
  29. 5.5 hours and you made the technician overcharge...

    5.5 hours and you made the technician overcharge the system. Interesting procedure to "train him up" to the right way to do things.
  30. I would do mini-split heat pumps for the basement...

    I would do mini-split heat pumps for the basement and office. Since you want to reduce ductwork the mini-splits are probably a good option for the other two floors also. If the duct layout would work...
  31. It depends on the failure mode of the TXV. The...

    It depends on the failure mode of the TXV. The issue the bulletin addresses was not a TXV defect. It is blockage caused by something else in the system. The Zerol Ice injection has a high success...
  32. The bulletin doesn't apply to your system. It is...

    The bulletin doesn't apply to your system. It is too big and does not have the offending rust inhibitor in it unless it was old stock. With that said the AC-Renew, or Zerol Ice, will not hurt the...
  33. Call your installer and let them know there is an...

    Call your installer and let them know there is an issue.

    Have them make sure the hole is sealed where the wires come through the wall.
  34. Replies
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    As a test turn off the adaptive recovery...

    As a test turn off the adaptive recovery features. Are the zones fairly similar sizes? Might be air dumping to increase airflow.
  35. Replies
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    He can't use that chart to evaluate the charge...

    He can't use that chart to evaluate the charge since the ADP coil was used. With that said, I agree with Baldloonie, looks like TXV issue.
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    Walk. Once you settle this guy will fix nothing...

    Walk. Once you settle this guy will fix nothing that you find issue with later.
  37. Need to know the model number. Some are...

    Need to know the model number. Some are multi-poise. What did the contractor say when you asked him?
  38. Replies
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    Pictures of the piping would help.

    Pictures of the piping would help.
  39. Has anyone actually shown where the leak is?...

    Has anyone actually shown where the leak is? Should not be difficult to visualize if it is in the indoor coil. If it is the indoor coil shop around more than just Costco. They are just a lead...
  40. You need to call your contractor back before you...

    You need to call your contractor back before you make a change that damages the unit.

    Dip switches will not change the operation. Auto changeover does not function with multi head systems.
  41. The system is not designed to use auto changeover...

    The system is not designed to use auto changeover with MXZ outdoor unit (multi-indoor). Page 5 of the operation manual notes this.
  42. Replies
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    1,187

    Steve was supposed to do that. I don't think he...

    Steve was supposed to do that. I don't think he did. :whistle:
  43. That control is proprietary to the Comfortzone...

    That control is proprietary to the Comfortzone system. There is nothing to replace it with.
  44. Replies
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    The termination types are specified by the...

    The termination types are specified by the furnace manufacturer. Call your installing contractor to let you know what terminations a re approved for the furnace installed.
  45. What thermostat are you using? Ask the dealer if...

    What thermostat are you using? Ask the dealer if the programming can be turned off.
  46. Replies
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    If you want an third opinion feel free to email....

    If you want an third opinion feel free to email. I will evaluate the system and give you an action plan if anything is needed. I suspect it will be a very short action plan.
  47. Replies
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    Then why get a gas furnace? Most systems matchup...

    Then why get a gas furnace? Most systems matchup more efficiently with a properly matched air handler.
  48. Replies
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    861

    Yes. Even more so since I just noticed your post...

    Yes. Even more so since I just noticed your post about 50 degree low outdoor temp. Skip the MN7 furnace. The 25VNA0 heatpump will more than handle that outdoor temp and also modulate down to 40%...
  49. Replies
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    Ductless seems to be the best option for your...

    Ductless seems to be the best option for your zoning needs, but you do have great reasons not to want that.

    With the zoning you want the Carrier MN7 modulating furnace and 25VNA0 VS outdoor unit...
  50. Replies
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    It is designed to be used with the aluminum frame...

    It is designed to be used with the aluminum frame filter, which is most likely the best filtration the system is designed for. Ask your dealer if an external filter rack can be installed in the duct.
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