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View Full Version : Honeywell Chromotherm III thermostat reads Hold AC and will not Hold Heat

gillr11
Nov 17, 2007, 09:00 AM
Chromotherm III thermostat reads Hold AC and will not Hold Heat--reverts back to Hold AC when run program is pushed.
hvac1000
Nov 17, 2007, 07:48 PM
What is the exact model number?
guthrd
Jul 15, 2010, 07:57 PM
How do I find out it the air conditioner is present? Thanks,

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