With Fan ON, Cooling Runs All The Time - HVAC - DIY Chatroom Home Improvement Forum

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Old 02-09-2011, 03:55 PM   #1
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With fan ON, Cooling runs all the time

Have a 2 yr old Carrier Heat Pump/ Honeywell Thermostat.
When I turn the fan to the ON position, no matter where I have the thermostat set, or even with the system set to OFF, the unit continues to cool - the compressor is on all the time the fan is running.

COntacted Honeywell - did diagnostics on THermostat - it is OK. Even wired to bypass the thermostat, and still the unit Cooled whenever the fan was ON.

Contacted Carrier - they told me to contact Climate Master, who makes the Water-source heat pumps for Carrier. They've been totally nonresponsive, but I see nothing on their website that looks like my unit.

Two A/C contractors have been unable to find a cause for the compressor to be ON whenever the Fan is ON.

Any suggestions?



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