Return to the Heating & Air Conditioning Forum | Post a Follow-Up

Carrier Heat Pumps - Compressor Problems?

Posted by aniam (My Page) on
Tue, Jun 19, 12 at 11:34

We have 2 Carrier heat pumps installed on our roof. Both units are from the Comfort Series (both model numbers start with 25HBC3xxxx).
Every time the compressors start up two things happen:

1. There is a loud click and what sounds like a "thump". The click sounds like it is coming from the thermostat (Honeywell) - I am not sure what, if anything, can be done about that. The "thump" comes from the compressors themselves - they seem to start in a very "hard" way. Is there anything that can be done about that?

2. The real concern I have is that every time the compressors start the lights dim momentarily. We have a brand new 200 amp service (main panel and 100 amp subpanel). Two different electricians looked at the set up and seem to think that the panels are sized and balanced properly. What could be the reason for dimming? And is there anything that can be done to remedy it?

Thank you for all your input and suggestions.

Follow-Up Postings:

RE: Carrier Heat Pumps - Compressor Problems?

What is the age of these HP condensers?

Have you called your installing dealer?

Could be a variety of reasons. Wire size may be undersized. May need hard start kits on both units.

I would call your installing dealer and discuss over the phone. I assume both units are heating and cooling satisfactorily.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Heating & Air Conditioning Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here