Question about Carrier XHB123D X/Y Series Heat/Cool Air Conditioner
A follow-up to my previous post. I talked with a technician from the Co that installed my unit, and the issue lies in the "Utility saver mode" for the 2 stage heat pumps, and having the high stage locked out. In the Advanced Setup menu (hold the "Advanced" button for 10 seconds to access this menu, look for the "Utility Saver" menu item. Select it and your system probably shows that "Utility Saver" is enabled, which only allows your heat pump to run on the low stage and not the high stage. If you change the the setting to be disabled, this will allow your system to run at the high stage and should solve your problem.
I have not changed the settings on my system yet to confirm this solution. That will have to wait until I get home this evening.
Posted on May 19, 2008
I have the same problem and have only found indicators of the cause but no solutions.
From an installation manual found online at: http://www.carrierwest.com/PDF/Operation_Service/24ana-3si.pdf
I discovered this note on page 9:
With Infinity Control
The utility curtailment relay should be wired between R and Y2
connections on the control board for Infinity Communicating
Systems only (see Fig. 9.) This input allows a power utility
device to interrupt compressor operation during peak load
periods. When the utility sends a signal to shut the system down,
the User Interface will display, “Curtailment Active”.
Posted on May 19, 2008
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Posted on Jan 02, 2017
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